JP4722019B2 - Ascent movement device - Google Patents

Description

  The present invention relates to a rising and moving apparatus that flies flapping, and particularly relates to an actuator structure that realizes easy control.

  A flapping robot is superior in mobility to conventional airplanes and helicopters having fixed wings. Therefore, in recent years, research aimed at the engineering realization of flapping robots has become active. In particular, the engineering application of hovering (flying in the air) like insects such as dragonflies and flies is expected.

  As shown in the paper "Wing Rotation and the Aerodynamic Basis of Insect Flight" by MH Dickinson et al. It is necessary to be able to move with two degrees of freedom consisting of a twisting movement with the front edge of the part as the central axis.

For example, in Japanese Patent Application Laid-Open No. 2006-69482, the above-described two-degree-of-freedom movement is performed using a hinge (hinge) and two rotating members (hereinafter referred to as “upper rotor” and “lower rotor”). A method of realizing is disclosed. Hereinafter, such a mechanism is called a two-degree-of-freedom drive mechanism.
“Wing Rotation and the Aerodynamic Basis of Insect Flight”, Michael H. Dickinson, Fritz-Olaf Lehmann, and Sanjay P. Sane, Science, vol. 284, no. 5422, 18 June 1999. JP 2006-69482 A

  However, according to the two-degree-of-freedom drive mechanism disclosed in Japanese Patent Application Laid-Open No. 2006-69482, each of the upper rotor and the lower rotor can be accurately driven in order to correctly realize the flapping motion of the blade portion. As a result, there arises a problem that an appropriate levitation force cannot be obtained. The problem will be specifically described below.

  FIG. 53 shows the relationship between the phase difference between the rotation angle of the upper and lower rotors and the rotation angle of the lower rotor and the twist angle of the blades in the two-degree-of-freedom drive mechanism having the structure shown in FIG. It is a graph which shows. FIG. 54 is a graph showing the relationship between the angle of attack, the lift coefficient, and the drag coefficient shown in Non-Patent Document 1 described above. From FIG. 54, it can be seen that when the angle of attack changes greatly, the lift coefficient changes greatly. If the lift coefficient changes greatly, the levitation force and the torque required to drive the blades will change greatly.

  For example, as shown in FIG. 54, in the vicinity of the angle of attack of 15 degrees at which the highest efficiency can be achieved, the change in the lift coefficient per angle of attack is about 0.056. In the vicinity of the angle of attack of 15 degrees, the lift coefficient is about 0.8. Therefore, it is necessary to limit the angle-of-attack error to about ± 1.4 degrees or less in order to suppress the lift force error to ± 10% or less near the angle of attack of 15 degrees.

  Further, in the rising and moving apparatus disclosed in Japanese Patent Laid-Open No. 2006-69482, as shown in FIG. 53, the phase difference between the rotation angle of the upper rotor and the rotation angle of the lower rotor is mediated by the hinge mechanism. This is reflected in the angle of attack of the blade. Further, the coefficient for converting the difference between the rotation angle of the upper rotor and the rotation angle of the lower rotor into the attack angle of the blade portion is about 2.8-4. Therefore, the difference between the rotation angle of the upper rotor and the rotation angle of the lower rotor must be at least ± 0.5 degrees or less, and if higher accuracy is required, it must be ± 0.3 degrees or less. .

  The angle of attack at the base of the blade portion is represented by (90− (twist angle)) [degree]. However, the portion that is largely related to the actual generation of lift is the portion in the vicinity of the tip of the blade portion. In general, the tip of the blade portion is twisted and deformed more greatly than the base of the blade portion. Therefore, the angle of attack at the tip of the blade is smaller than the angle of attack at the base of the blade. However, for the sake of simplicity of explanation, here, the following explanation will be made on the assumption that there is no difference between the angle of attack at the tip of the blade and the angle of attack at the base of the blade.

  Further, FIG. 39 shows the results of calculating the torque required for each of the two upper rotors and the lower rotor by a simulation using fluid-structure interaction analysis. In this simulation, the two-degree-of-freedom disclosed in Japanese Patent Laid-Open No. 2006-69482 shown in FIG. 2 is the reciprocating rotational motion of the rotational angle α shown in FIG. 37 and the twisting motion of the rotational angle β. This is done by a drive mechanism. The ambient fluid in this simulation is air at 1 atmosphere.

  From FIG. 39, it can be seen that the driving torque of the upper rotor and the lower rotor increases from 0 to about 0.11 mN × m in an extremely short time of 2 msec or less. That is, it can be seen from FIG. 39 that the driving torque of the upper rotor and the lower rotor changes abruptly. This is considered to be because the driving torque of the upper rotor and the lower rotor is greatly influenced by the interaction between the blade portion and the surrounding fluid, the inertia force of the blade portion, and the deformation of the blade portion.

  From the above, according to the rising and moving apparatus disclosed in Japanese Patent Application Laid-Open No. 2006-69482, it is very high for controlling the respective rotation angles of the upper rotor and the lower rotor that realize an appropriate angle of attack of the blade portion. Accuracy is required. Moreover, unless the rotational angle of these rotors is strictly controlled by frequently adjusting the torques of these rotors, the desired levitation force required for flapping flight cannot be obtained. However, it is extremely difficult to maintain the desired angle of attack by controlling the rotation angle of the rotor with high accuracy as described above.

  The present invention has been made in view of the above-described problems, and an object thereof is to provide a rising and moving apparatus that can maintain a desired angle of attack without complicating control.

  The rising and moving apparatus according to one aspect of the present invention includes a blade portion that flutters and a drive mechanism portion that transmits a driving force to the blade portion. In addition, the drive mechanism unit is connected to the apparatus, and the upper rotor that rotates and reciprocates within a predetermined angle range is connected to the front edge portion of the blade unit and the drive mechanism unit is connected. A lower rotor that rotates and reciprocates within a specific range so as to twist the blade portion around the front edge at a timing including the end of the reciprocating motion in the front-rear direction. Furthermore, the device has a mechanism for generating a mechanical interaction in which the potential energy is a minimum value in the upper rotor and the lower rotor when the twist angle around the leading edge of the blade portion is a specific value. I have.

  Note that the potential energy becomes a minimum value when the control for changing the difference between the phase of the upper rotor and the phase of the lower rotor is not performed, and the relative positional relationship between the upper rotor and the lower rotor is reduced. Means to prevent or suppress fluctuations. Preventing or suppressing fluctuations in the relative positional relationship between the upper rotor and the lower rotor means flapping when control for changing the difference between the upper rotor phase and the lower rotor phase is not performed. This means that the torsion angle of the blade, in other words, the angle of attack is to be maintained at a substantially constant value so as not to hinder the flight.

  More specifically, preventing or suppressing the change in the relative positional relationship between the upper rotor and the lower rotor means that the control for changing the phase difference between the upper rotor and the lower rotor is not performed. When a force that varies the angle of attack is generated due to vibration, etc., a force is generated to maintain the angle of attack at a desired value, or the angle of attack is slightly varied It means to generate a force to return the angle to a desired value. Note that when control for changing the phase difference between the upper rotor and the lower rotor is performed, the relative positional relationship between the upper rotor and the lower rotor easily changes.

  The potential energy includes gravity potential energy, elastic force potential energy, electrical potential energy, and magnetic potential energy.

  According to this, the twist angle of the blade part is maintained at a specific value at a desired timing. If the twist angle is set to a value that realizes an ideal angle of attack for the blade, the controller does not need to adjust the angle of attack of the blade. Therefore, the control of the blade part by the above-described control part becomes easy.

The above-described mechanism is realized by the following specific configuration.
When the upper rotor includes an upper concave portion on the surface facing the lower rotor, and the lower rotor includes a lower concave portion on the surface facing the upper rotor, the above-described mechanism is sandwiched between the upper rotor and the lower rotor. Sphere or cone that fits in both the upper and lower recesses when the torsional angle is a specific value by reciprocating to draw an arcuate trajectory. It is desirable to contain.

  According to this, the above-mentioned mechanical interaction can be easily realized. In particular, when a conical body is used, the stress applied to the upper rotor and the lower rotor can be dispersed over a wide range.

  The mechanism described above may include a protrusion provided on one of the upper rotor and the lower rotor, and abutting against the other of the upper rotor and the lower rotor when the twist angle has a specific value. Moreover, in the above-mentioned case, it is necessary that the above-mentioned mechanism includes one magnet and another magnet that are provided separately for the upper rotor and the lower rotor. In this case, the one magnet and the other magnet generate repulsive forces so that the portions having the same polarity face each other and the protrusion comes into contact with the other of the upper rotor and the lower rotor.

  According to this, it is possible to reliably fix the relative positional relationship between the upper rotor and the lower rotor using a simple structure.

  The above-described mechanism may include one magnet and a magnetic body or another magnet that are separately attached to the upper rotor and the lower rotor. In this case, the magnetic body or other magnet receives an attractive force from one magnet so that the twist angle becomes a specific value.

  According to this, since the above-mentioned mechanical interaction can be generated without causing physical contact or deformation, energy loss due to the function of the above-described mechanism can be reduced.

  The above-described mechanism may include an elastic body that is connected to each of the upper rotor and the lower rotor and does not receive a force from the upper rotor and the lower rotor when the twist angle has a specific value.

  According to this, since the structure of the above-described mechanism can be simplified, the above-described mechanism can be easily manufactured.

The effects of the invention of the following aspect can provide the same effect as the effect of the invention of the aforementioned one aspect.
A rising and moving apparatus according to another aspect of the present invention includes a blade portion that flutters and a drive mechanism portion that transmits a driving force to the blade portion. In addition, the apparatus has an upper concave portion on the lower surface, is connected to a drive mechanism portion, and rotates and reciprocates within a predetermined angle range so that the front edge portion of the blade portion reciprocates in the front-rear direction. And a lower concave portion on the upper surface, the drive mechanism portion is connected, and reciprocates within a specific range so that the blade portion is twisted around the front edge portion at a timing including the end of the reciprocating motion in the front-rear direction. And a lower rotor. In addition, the device reciprocates so as to draw an arcuate locus while being sandwiched between the upper rotor and the lower rotor, and the torsion angle around the front edge of the blade portion has a specific value. Sometimes it is provided with a sphere or conical body fitted in the upper and lower recesses.

  The rising and moving apparatus according to still another aspect of the present invention includes a blade portion that flutters and a drive mechanism portion that transmits a driving force to the blade portion. In addition, the drive mechanism unit is connected to the apparatus, and the upper rotor that rotates and reciprocates within a predetermined angle range is connected to the front edge portion of the blade unit and the drive mechanism unit is connected. A lower rotor that rotates and reciprocates within a specific range so as to twist the blade portion around the front edge at a timing including the end of the reciprocating motion in the front-rear direction. In addition, the apparatus projects from one of the upper rotor and the lower rotor toward the other of the upper rotor and the lower rotor, and when the twist angle has a specific value, the other of the upper rotor and the lower rotor The protrusions that are in contact with the upper rotor and the lower rotor are attached separately, and the parts having the same polarity face each other to generate repulsive force so that the protrusions contact the other of the upper and lower rotors. And other magnets.

  The rising and moving apparatus according to still another aspect of the present invention includes a blade portion that flutters and a drive mechanism portion that transmits a driving force to the blade portion. In addition, the drive mechanism unit is connected to the apparatus, and the upper rotor that rotates and reciprocates within a predetermined angle range is connected to the front edge portion of the blade unit and the drive mechanism unit is connected. A lower rotor that rotates and reciprocates within a specific range so as to twist the blade portion around the front edge at a timing including the end of the reciprocating motion in the front-rear direction. In addition, the device is attached to one of the upper rotor and the lower rotor and the other of the upper rotor and the lower rotor, and the twist angle around the front edge of the blade is a specific value. The magnetic body or other magnet that receives an attractive force from one magnet is provided.

  A rising and moving apparatus according to still another aspect of the present invention includes a blade portion that flutters and a drive mechanism portion that transmits a driving force to the blade portion. In addition, the drive mechanism unit is connected to the apparatus, and the upper rotor that rotates and reciprocates within a predetermined angle range is connected to the front edge portion of the blade unit and the drive mechanism unit is connected. A lower rotor that rotates and reciprocates within a specific range so as to twist the blade portion around the front edge at a timing including the end of the reciprocating motion in the front-rear direction. Further, the device is connected to each of the upper rotor and the lower rotor, and when the twist angle around the front edge portion of the blade portion has a specific value, the elastic body does not receive a force from the upper rotor and the lower rotor. It has.

  In addition, even in a mechanism other than the mechanisms of the above-described aspects, the difference between the phase of the upper rotor and the phase of the lower rotor is maintained constant at the timing at which the twist angle of the blade portion should be maintained substantially constant. As long as the mechanism causes a mechanical interaction between the upper rotor and the lower rotor, any mechanism may be employed.

A rising and moving apparatus according to an embodiment of the present invention will be described with reference to FIGS.
In the present embodiment, a rising and moving apparatus having a symmetrical configuration will be described.

  Therefore, for simplification of description, the same reference numerals are given to the symmetrical components, and only the left side of them will be described.

(Overall configuration)
First, the overall configuration of the rising and moving apparatus of the present embodiment will be described with reference to FIGS. 1 and 2. Since this item is for explaining the overall configuration, the detailed configuration and operation of each component will be described later.

  As shown in FIG. 1, the rising and moving apparatus 100 includes a main body 101 and a pair of blade portions 110 provided on the main body 101. One of the pair of blade portions 110 is provided on the left side portion of the main body 101, and the other of the pair of blade portions 110 is provided on the right side portion of the main body 101.

  The rising and moving apparatus 100 generates a flow in the surrounding fluid by the flapping motion of the blade portion 110 and receives a reaction from the surrounding fluid. At this time, the rising and moving apparatus 100 receives a reaction exceeding its own weight, which is directed vertically upward, from the surrounding fluid. Thereby, the vertical movement acceleration exceeding the gravitational acceleration is generated in the rising and moving apparatus 100. As a result, the rising and moving apparatus 100 is lifted.

  As shown in FIG. 2, the rising and moving apparatus 100 includes an upper ultrasonic motor 120 and a lower ultrasonic motor 130 as actuators. The upper ultrasonic motor 120 and the lower ultrasonic motor 130 are rotatably mounted on the main body 101. The upper ultrasonic motor 120 and the lower ultrasonic motor 130 are connected to a drive mechanism unit 140 that transmits the movements of the upper ultrasonic motor 120 and the lower ultrasonic motor 130 to the blade unit 110. A blade part 110 is connected to the drive mechanism part 140.

  The blade portion 110 is driven by the upper and lower ultrasonic motors 120 and 130 to reciprocate and rotate with the vertical direction as the rotation center axis (hereinafter referred to as “stroke motion”), and the front edge portion of the blade portion 110. A rotational motion (hereinafter referred to as “twisting motion”) is performed. That is, the wing | blade part 110 can perform each of a stroke motion and a twist motion independently.

  Upper and lower ultrasonic motors 120 and 130 are controlled by a control circuit 150. The control circuit 150 is given position information and posture information of the rising and moving apparatus 100 from a position detection sensor 160 fixed to the main body 101.

  Further, the rising and moving apparatus 100 has a function of transmitting information on the rising and moving apparatus 100 itself and information on the periphery thereof to the external controller 200 via the communication device 170. In the present embodiment, information obtained by the image sensor 180 is transmitted to the controller 200.

  Note that the image information obtained by the image sensor 180 may be directly used by the control circuit 150. For example, the position and speed of the rising and moving apparatus 100 may be recognized by the control circuit 150 by performing image processing on the image information.

  As shown in FIGS. 1 and 2, the communication device 170 has a function of receiving information transmitted from the external controller 200 and providing the information to the control circuit 150. In the present embodiment, the external controller 200 is controlled by the operator 210 and gives a motion command for the rising and moving apparatus 100.

  Note that any method may be used for the controller 200 to present the information related to the gas to the operator 210. For example, if the external controller 200 has an image display function, the information about the gas acquired by the image sensor 180 is visually presented to the operator 210. Further, for convenience of explanation, the external controller 200 is operated by the operator 210, but this is not essential.

  In addition, the control circuit 150, the communication device 170, the image sensor 180, and the like are driven by power supplied from a power source 190 provided in the main body 101. The power source 190 functions as a driving energy source of the present invention, but the driving energy source may be other than that using electric power, such as fossil fuel. In this case, an actuator corresponding to the driving energy source such as a two-cycle engine or a Stirling engine is used as the actuator.

(Feather)
The wing | blade part 110 has a shape as was shown by FIGS. 3-7, length is 65 mm, and width is 16 mm. The blade portion 110 has a front edge portion 1102, a blade surface portion 1103, a frame portion 1104, a branch portion 1105, and an actuator joint portion 1106. The wing surface portion 1103 is a portion other than the front edge portion 1102, the frame portion 1104, the branch portion 1105, and the actuator joint portion 1106, and includes the elongated plate-like portions 1107, 1108, and 1109 and an aramid film 1114. Part.

The portions other than the aramid film 1114 of the blade portion 110, that is, the front edge portion 1102, the frame portion 1104, the branch portion 1105, the actuator joint portion 1106, the elongated plate-like portions 1107, 1108, and 1109 are 20 μm thick CFRP (Carbon Fiber Reinforced). Plastic) layer. More specifically, the portions other than the aramid film 1114 of the blade portion 110 are formed by cutting out three portions shown in FIGS. 5 to 7 from the CFRP sheet and laminating the three portions.

  The front edge portion 1102 and the actuator joint portion 1106 have a three-layer structure of a CFRP layer having a thickness of 20 μm. Further, the frame portion 1104, the branch portion 1105, the elongated plate-like portions 1107, 1108, and 1109 have a single layer structure of a CFRP layer. When the positive direction of the X axis shown in FIG. 3 is 0 degree, the direction of the fiber axis of the elongated plate-like portion 1107 is −60 degrees (+120 degrees), and the elongated plate-like portion 1108 and the frame portion 1104 are respectively The direction of the fiber axis is 0 degree (180 degrees), the direction of the fiber axis of the elongated plate-like part 1109 is +60 degrees (+240 degrees), and the direction of the fiber axis of the branch part 1105 is −30 degrees (150 Degree). The leading edge 1102 and the actuator joint 1106 are formed by stacking three CFRP layers whose fiber axis directions are −60 degrees (+120 degrees), 0 degrees (180 degrees), and +60 degrees (240 degrees). Has been.

Since the main deformation of the leading edge portion 1102 is expansion and contraction parallel to the longitudinal direction of the blade portion 110, it is desirable that this direction coincides with the fiber axis of the CFRP layer. In addition, it is considered that force is applied to the actuator joint 1106 in a plurality of directions, and the direction of these forces changes according to the flapping motion. Therefore, it is desirable to form by laminating a large number of CFRP layers having fiber axes in different directions so as to have as uniform rigidity as possible in all directions. The leading edge 1102 and the actuator joint 1106 are more rigid than the other parts. The manufacturing method of the blade | wing part which satisfy | fills these requirements is mentioned later.

  Further, a wing surface portion 1103 is provided so as to be surrounded by the actuator joint portion 1106, the front edge portion 1102, the frame portion 1104, and the branch portion 1105. The wing surface portion 1103 is made of an aramid film 1114 and extends in the depth direction of the paper surface of FIG. The actuator joint 1106 is provided at the base of the blade 110 and is joined to the actuator, and its length is 10 mm.

  As shown in FIGS. 5 to 7, each of the plurality of elongated plate-like portions 1107 has the same width, and the plurality of elongated plate-like portions 1107 are provided in parallel with each other at the same pitch. Each of the plurality of elongated plate-like portions 1108 has the same width, and the plurality of elongated plate-like portions 1108 are provided in parallel with each other at the same pitch. Furthermore, each of the plurality of elongated plate-like portions 1109 has the same width, and the plurality of elongated plate-like portions 1109 are provided in parallel with each other at the same pitch.

  In the present embodiment, for convenience of explanation, the plurality of elongated plate-like portions in the same layer are assumed to be the same pitch and parallel, but for example, when the stiffness distribution is intentionally changed, It is not limited to the above. For example, the blade portion 110 may be used in which the pitch on the root side is smaller than that on the tip side, thereby increasing the rigidity.

<Front edge>
As shown in FIG. 4, the front edge portion 1102 has a groove structure extending along the longitudinal direction of the blade portion 110, that is, an uneven shape called corrugation. Therefore, in the leading edge portion 1102, the rigidity against in-plane bending deformation including the longitudinal direction is higher than the rigidity against bending deformation with the longitudinal direction as the rotation center axis. The uneven shape of the front edge portion 1102 can be easily formed by heating a raw material sheet of a CFRP layer called a prepreg in a state of being in close contact with a mold corresponding to the uneven shape.

  Further, a large load is applied to the front edge portion 1102. Therefore, the front edge portion 1102 has a structure in which the elongated plate-like portion is not provided, that is, a solid structure with no gap, and therefore has higher rigidity than the wing surface portion 1103. Furthermore, since the load increases cumulatively as the front edge portion 1102 approaches the base, the base is thicker than the tip. The width and height of the front edge 1102 at the root portion is about 2 mm, and the width and height of the front edge 1102 at the tip portion is about 1 mm. However, due to restrictions on the description accuracy of the drawings, in FIGS. 4 to 7, the width of the front edge portion 1102 at the root portion and the width of the front edge portion 1102 at the tip portion are drawn with the same width.

<Feather>
As shown in FIGS. 4 to 7, the wing surface portion 1103 is configured by elongated plate-like portions 1107, 1108 and 1109 of the CFRP layer, and an aramid film 1114. An aramid film 1114 having the same outer shape as the blade portion 110 is sandwiched between elongated plate-like portions of the CFRP layer.

In the present embodiment, the heat resistant temperature of the aramid film 1114 is higher than the molding temperature of the CFRP layer, and in the CFRP layer molding process, the prepreg and the aramid film are brought into contact with each other and subjected to pressure and heat treatment. Thus, the CFRP layer and the aramid film can be adhered by the resin component contained in the prepreg. Therefore, raw materials including the front edge portion 1102, the frame portion 1104, the branch portion 1105, the actuator joint portion 1106, the elongated plate-like portions 1107, 1108, 1109 and the aramid film 1114, which are constituted by the CFRP layer, are baked on the above-described mold. By tying, the wing face portion 1103 can be easily manufactured.

  The elongated plate-like portions 1107, 1108, and 1109 of the wing surface portion 1103 are overlapped with each other in a direction in which they extend by 60 degrees. Therefore, when viewed from the direction perpendicular to the surface of the wing surface portion 1103, the elongated plate-like portions 1107, 1108, and 1109 appear to form a regular triangular frame, that is, a truss.

  Each of the elongated plate-like portions 1107, 1108, and 1109 has an elongated rectangular outline, and two long sides thereof extend parallel to the fiber axis. This is a configuration for making maximum use of the strength characteristics of CFRP, which is a uniaxial anisotropic material, by matching the longitudinal direction of CFRP having high strength with the direction in which the force of each beam of the truss structure is applied. However, if only one of the two long sides extends in parallel to the fiber axis, the strength of the fiber can be effectively used to some extent. If the beam is not rectangular, it is necessary to determine the fiber axis direction optimal for the shape of the beam using a technique such as stress analysis.

  In the present embodiment, it is assumed that the bending rigidity of each of the elongated plate-like portions 1107, 1108, and 1109 is 1/8 that of the front edge portion 1102. In general, the bending stiffness is proportional to the cross-sectional second moment. That is, the bending rigidity is proportional to (width: the length of the short side of the rectangle) × (thickness cubed).

  Here, the thickness of each of the elongated plate-like portions 1107, 1108, and 1109 is constant, and the width of the elongated plate-like portion 1107 is the distance between the central axes of the elongated plate-like portions 1107 (hereinafter referred to as “pitch”). The width of the elongated plate-like portion 1108 is 1 / a times the pitch between the elongated plate-like portions 1108, and the width of the elongated plate-like portion 1109 is the elongated plate-like portion. It is assumed that the pitch is 1 / a times 1109. Under this assumption, if the width of the elongated plate-like portion becomes 1 / a times, the bending rigidity of the wing surface portion 1103 also becomes 1 / a times.

  Therefore, in the present embodiment, the widths of the elongated plate-like portions 1107, 1108, and 1109 are set to the pitches of the elongated plate-like portions 1107, the elongated plate-like portions 1108, and the elongated plate-like portions 1109, respectively. By making it 1/8 times, the wing surface part 1103 having a bending rigidity of 1/8 times the bending rigidity of the front edge part 1102 is realized.

  That is, by changing only the width of each of the elongated plate-like portions 1107, 1108, and 1109 without changing the thickness of the wing surface portion 1103, that is, the number of laminated elongated plate-like portions, a desired bending rigidity distribution is obtained. The blade | wing part 110 which has is formed. Since the number of laminated thin plate-like portions is only a natural number and cannot be changed continuously, the bending stiffness distribution of the blade portion becomes discontinuous only by changing the number of laminated thin plate-like portions. End up.

  However, since the ratio between the width and the pitch of the elongated plate-like portion can be continuously changed, the desired bending stiffness distribution can be obtained by continuously changing the bending stiffness distribution.

  In addition, according to the structure of the blade portion 110 of the present embodiment, the ratio of the width of the elongated plate-like portion 1107 to the pitch between the elongated plate-like portions 1107, the width of the elongated plate-like portion 1108, and the elongated plate-like portions 1108 to each other. The bending rigidity of the wing face portion 1103 can be made anisotropic by making the ratio of the width of the elongated plate-like portion 1109 and the ratio of the width of the elongated plate-like portion 1109 different from each other. Is possible. For example, when manufacturing the blade portion 110 having high rigidity against bending deformation in the plane including the longitudinal direction of the blade portion 110, the width of the elongated plate-like portion 1108 is increased, What is necessary is just to make a pitch small.

  On the other hand, when a method of cutting out a part of a laminated structure in which three CFRP layers are laminated so that a truss is formed, three CFRP layers are laminated on three sides of each truss. The mass of the wing surface portion formed by this method is 3 / a times the mass of the laminated structure of three CFRP layers having the same area as the wing surface portion 1103 where the truss is not formed (a is the value described above). In this case, in the in-plane bending deformation mode including the fiber axis of one of the three CFRP layers, the two CFRP layers other than the one CFRP layer have only a rigidity equivalent to that of the resin. Is unnecessary. That is, the above-described blade portion 110 has approximately the same mass as that of the blade portion with a mass of about one third of that of the blade portion formed by clipping as described in this paragraph (specifically, The mass of the blade part and the numerical value of the rigidity are described in the item of <feather mass> below.)

<Frame part>
As shown in FIG. 4, the aramid film 1114 constituting the wing surface portion 1103 is stretched between the actuator joint portion 1106, the front edge portion 1102, and the frame portion 1104. Therefore, the end portion of the aramid film 1114 is prevented from being damaged. In the present embodiment, the width of the frame portion 1104 is about 0.5 mm. As shown in FIG. 4, the frame portion 1104 has a shape surrounding the wing surface portion 1103, and therefore the extending direction thereof varies depending on the position. The direction of the fiber axis of the frame portion 1104 coincides with the extending direction thereof.

<Branch>
When the blade part 110 becomes large, the rotation radius of the tip part of the blade part 110 also becomes large. In this case, since the relative speed with respect to the fluid increases, a large fluid force is generated at the tip of the blade portion 110. Even if the fluid force generated at the tip of the blade 110 becomes large, the controllability of the tip of the blade 110 needs to be maintained. Therefore, a branch portion 1105 that is connected to the front edge portion 1102 and extends obliquely from the front edge portion 1102 is provided. The width of the branch 1105 is about 0.9 mm. The branch portion 1105 is formed to extend in the direction of −30 ° when the direction facing the tip side of the blade portion 110 in the X-axis direction is 0 °.

  Depending on the angle between the branch portion 1105 and the X-axis and the rigidity required for the wing surface portion 1103, the branch portion 1105 is provided in a CFRP layer having an elongated plate-like portion different from the aforementioned elongated plate-like portion 1107. It may be. In addition, a wing face portion 1103 having a structure in which a branch portion 1105 formed using a material different from the CFRP layer is sandwiched between the CFRP layers may be used.

<Actuator joint>
The shape of the actuator joint 1106 is actually determined according to the compatibility with the actuator that drives the blade 110. The actuator joint 1106 of the present embodiment is assumed to have the shape shown in FIG. Further, in order to prevent deformation due to the fluid force generated by the flapping motion, the material of the actuator joint 1106 is a CFRP layer having a solid structure that does not have an elongated plate-like portion, that is, has no gap. Further, a groove structure is provided at the front end of the actuator joint 1106. The groove structure of the actuator joint portion 1106 and the groove structure of the front edge portion 1102 are provided so as to be continuous.

<Feather mass>
Assuming that the specific gravity of CFRP is 1.6 g / cm ³ , Table 1 shows the mass of each part of the blade portion 110 described above. As shown in Table 1, the mass of the blade part 110 is about 26.5 mg. The mass of the actuator joint 1106 is about 10.8 mg.

  On the other hand, the mass of the blade portion of the comparative example in which a method of cutting out a laminated structure in which three CFRP layers are laminated so as to form a truss shape is about 48 mg.

(Ultrasonic motor)
Next, the upper ultrasonic motor 120 and the lower ultrasonic motor 130 as actuators of the present invention will be described with reference to FIGS.

<Overall configuration>
First, the configuration of the upper ultrasonic motor 120 and the lower ultrasonic motor 130 will be described.

  As shown in FIG. 8, the upper ultrasonic motor 120 includes an upper ultrasonic vibrator 121 and an upper rotor 122 driven by the upper ultrasonic vibrator 121. Further, the upper rotor 122 is provided to be rotatable only around the axis of the rotor shaft 124 with the upper bearing (not shown) interposed in the rotor shaft 124 via the upper bearing 123. The rotor shaft 124 is fixed to the main body 101.

  An upper magnetization pattern 125 is written in an arc shape on the upper rotor 122. The upper magnetization pattern 125 is read by the upper magnetic encoder 126. In the upper ultrasonic transducer 121, as shown in FIG. 14, the support portion 1214 is fixed to the support shaft 127, and the traction portion 1224 is pulled by the traction rubber 129. Further, power for driving the upper ultrasonic transducer 121 is supplied via the film substrate 128.

  The lower ultrasonic motor 130 has a mirror-symmetric structure with the upper ultrasonic motor 120 in the vertical direction. That is, in the lower ultrasonic motor 130, the lower ultrasonic transducer 131 rotates the lower rotor 132. The lower rotor 132 is provided on the rotor shaft 124 so as to be rotatable only about the axis of the rotor shaft 124 with a lower bearing (not shown) interposed therebetween. A lower magnetization pattern (not shown) is written on the lower rotor 132 in an arc shape. The lower magnetization pattern is read by the lower magnetic encoder 136.

  Since the upper and lower ultrasonic motors 120 and 130 have exactly the same configuration except that they are provided mirror-symmetrically in the vertical direction, only the detailed structure of the upper ultrasonic motor 120 will be described below. Will be explained.

<Driving principle>
Next, the driving principle of the upper ultrasonic motor 120 will be described with reference to FIGS.

  The upper ultrasonic transducer 121 includes a vibration plate 1211, a front surface piezoelectric element 1212, and a rear surface piezoelectric element 1213. The diaphragm 1211 is made of stainless steel having a thickness of 0.2 mm, and includes a rectangular portion having a width of 2 mm and a length of 9 mm, and a support portion 1214 protruding outward from a central portion in the longitudinal direction of the rectangular portion. . The diaphragm 1211 is sandwiched between the front surface piezo 1212 and the back surface piezo 1213. The front surface piezo 1212 and the back surface piezo 1213 are each formed of a piezo sintered body having a strip shape with a width of 2 mm, a length of 8 mm, and a thickness of 0.2 mm and polarized in the thickness direction.

  A front surface electrode 1216 is bonded to the front surface piezoelectric element 1212, and a rear surface electrode 1217 is bonded to the rear surface piezoelectric element 1213. When a voltage is applied to the surface electrode 1216, the upper ultrasonic transducer 121 has three nodes as shown in FIG. 10, that is, a third-order flexural vibration mode is excited. Further, when a voltage is applied to the back electrode 1217, a vertical (stretching) vibration mode as shown in FIG. 11 is excited. In the upper ultrasonic transducer 121 according to the present embodiment, the resonance frequencies of the resonance modes for the two vibrations are both 250 kHz, which coincide with each other.

  Here, by changing the phase of vibration of these resonance modes by ± 90 °, the vertex of the diaphragm 1211 performs two kinds of elliptical motions shown in FIGS. The two types of elliptical motion are elliptical motion that rotates in the forward direction and elliptical motion that rotates in the reverse direction. A contact portion 1215 made of ceramic is provided at the apex of the diaphragm 1211. The contact portion 1215 rotates the upper rotor 122 around the axis of the rotor shaft 124 by frictional force according to the above-described elliptical motion. At this time, either forward rotation or reverse rotation is selected.

  In FIGS. 12 and 13, the potential applied to the front electrode 1216 is φA, the potential applied to the back electrode 1217 is φB, and φA and φB are multiplied by cos (2πft) and sin (2πft), respectively. The rotation direction of the contact part 1215 in the case where it represents with a function is shown. For convenience of explanation, the potential applied to each of the front electrode 1216 and the back electrode 1217 is represented by a trigonometric function. However, if the phase of these potentials is shifted by ± 90 °, it is represented by a rectangular wave or the like. The potential to be applied may be applied to both electrodes.

  Each of the upper rotor 122 and the lower rotor 132 performs a reciprocating rotational movement within a predetermined rotation angle range. Therefore, in order to reduce the weight, as shown in FIG. 14, an upper rotor 122 and a lower rotor 132 that are substantially fan-shaped and whose outer shape has a central angle of 120 ° are used. desirable. According to this, the occupation rate of the rotor in the rising and moving apparatus can be reduced.

  The numerical values such as the size of each part and the resonance frequency of the diaphragm are only examples, and are not limited to the above values as long as the requirements for flying are satisfied. The requirements for this ascent are stated in the Ascentability section below.

  Further, the upper rotor 122 and the lower rotor 132 may have a hollow structure for weight reduction within a range in which necessary strength is ensured. Furthermore, the upper rotor 122 and the lower rotor 132 may be provided with a mechanism for limiting the rotation angle θ1 of the upper rotor 122 to the rotation angle θ2 of the lower rotor 132 within a predetermined range.

  According to this, the wing twist angle β is limited to a value within a certain range. Therefore, in Equation (7), which will be described later, one solution is physically determined. As a result, the operation of the blade portion is stabilized. In addition, according to experiments by the present inventors, it has been found that when the absolute value of (θ1−θ2) becomes a value equal to or greater than a predetermined value, the solution of equation (7) described later becomes a multiple solution.

<Preload mechanism>
Next, a mechanism for applying a preload from the contact portion 1215 to the upper rotor 122 will be described with reference to FIG.

  A preload acts on the upper rotor 122 from the contact portion 1215, and as a reaction, a drag is generated from the contact portion 1215 toward the outer peripheral surface of the upper rotor 122. Therefore, friction is generated between the upper rotor 122 and the contact portion 1215. Therefore, the upper rotor 122 receives a frictional force due to the elliptical motion of the contact portion 1215 and performs a reciprocating rotational motion.

  The traction rubber 129 has an annular shape, and one end thereof is hooked on the traction portion 1224. The other end of the traction rubber 129 is hooked on a traction rubber pin 113 fixed to the main body reinforcing pole 112. Accordingly, tension is generated in the pulling rubber 129 and the pulling portion 1224 is pulled toward the main body reinforcing pole 112, so that the vibration plate 1211 is around the axis of the support shaft 127 that supports the vibration plate 1211 including the pulling portion 1224. Rotating motion. This rotational movement is restricted by the contact portion 1215 coming into contact with the upper rotor 122. Therefore, a preload from the contact portion 1215 toward the upper rotor 122 is generated.

  In addition, it is possible to adjust the magnitude | size of the above-mentioned preload by rotating the above-mentioned main body reinforcement pole 112 around the long axis. Further, since the preload mechanism is provided to obtain a frictional force for driving the upper rotor 122, the above-described preload is obtained, and the flying characteristics of the rising and moving apparatus 100 are not impaired. If there is, it is not limited to the structure shown in FIG.

<Rotation angle detection>
The upper magnetic encoder 126 shown in FIG. 8 is provided with two detection units for the A phase and the B phase with an interval of 1/4 of the pattern period. According to this configuration, the phases of the A phase and the B phase differ depending on the rotation direction of the upper rotor 122 as in a general encoder. Therefore, for example, if the A-phase up edge is used as a trigger for the counter and 1/0 of the B-phase level is used to determine which of up-count / down-count is used, the rotation of the upper rotor 122 It is possible to detect the angle θ1. The rotation angle θ1 is calculated in the central processing unit 151.

<Supplement>
The ultrasonic motor shown in FIGS. 8 to 14 is an example of a general actuator, and the actuator of the rising and moving apparatus according to the present invention is not limited to the ultrasonic motor having the above-described structure. For example, an electromagnetic motor or an internal combustion engine may be used as the actuator. Further, any device for detecting the rotation angle may be used as long as it does not inhibit flapping flight. For example, instead of the method using the magnetic encoder described above, a method using an optical encoder may be adopted.

(Drive mechanism)
Next, the drive mechanism unit will be described with reference to FIGS.

  As shown in FIG. 15, the drive mechanism unit 140 includes an upper plate 141 fixed to the upper rotor 122 and a lower plate 142 fixed to the lower rotor 132. Further, an intermediate plate 144 is connected to the lower plate 142 with the first aramid hinge 143 interposed therebetween. Furthermore, the root portion of the blade portion 110 is connected to the upper plate 141 via the second aramid hinge 145.

  Further, the root portion of the blade portion 110 is also connected to the intermediate plate 144 with the third aramid hinge 146 interposed therebetween. Therefore, a composite hinge is configured in which the upper plate 141, the blade portion 110, the intermediate plate 144, and the lower plate 142 are connected by an aramid film. This composite hinge is driven by the upper rotor 122 and the lower rotor 132.

  16 to 18 show the shapes of the upper plate 141, the intermediate plate 144, and the lower plate 142. In addition, the part shown by the hatching of FIGS. 16-18 is bent about 90 degrees with respect to the main surface of each plate for the reinforcement of the part of the vicinity of the edge which is not connected to the hinge and rotor of each plate. . Further, in order to avoid interference between the bent portions, both side ends of the bent portions are cut in a direction of 45 ° with respect to the direction in which the bent portions extend.

  Each aramid hinge has a width of 0.1 mm, and its width is very small compared to the length. Therefore, each aramid hinge functions as a link, that is, a butterfly plate (trunk number) that can move only in one pseudo degree of rotation. The extension lines of the aramid hinges 143, 145, and 146 intersect at one point, which is located on the central axis of the shaft 124 and located between the upper bearing 123 and the lower bearing 133. . With this configuration, the reciprocating motion of the blade portion 110 in the front-rear direction is controlled by controlling the rotation angle of the upper ultrasonic motor 120, and the phase of the rotation angle of the upper ultrasonic motor 120 and the phase of the rotation angle of the lower ultrasonic motor 130 are By controlling the difference, the twisting motion of the blade 110 is controlled.

  That is, the actuator includes the upper ultrasonic motor 120 as a back-and-forth reciprocating rotor that reciprocates the front edge portion 1102 as a blade shaft in the front-rear direction (rotation angle α: rotation angle around the Z axis), and movement in the reciprocating motion. And a torsional motion rotor that rotates the front edge portion 1102 around the axis (rotation angle β) in a predetermined period after the reversal of direction.

  The above-described flapping method will be described more specifically with reference to FIGS. 19 and 20. 19 and 20, the Y axis extends along the front-rear direction of the rising and moving apparatus 100. Further, the Z-axis extends along the vertical direction of the rising and moving apparatus 100. Further, the X axis extends along the left-right direction of the rising and moving apparatus 100. The X axis, the Y axis, and the Z axis are orthogonal to each other.

  In the Y axis, the rear is positive and the front is negative. In the X axis, the upper side is positive and the lower side is negative. Further, in the Z-axis, the side where the left blade portion 110 is located is positive, and the side where the right blade portion 110 is located is negative. Also, as shown in FIG. 20, the rotation angle of the upper ultrasonic motor 120 is θ1, the rotation angle of the lower ultrasonic motor 130 is θ2, and the flapping stroke angle that is the rotation angle of the reciprocating motion in the front-rear direction is α It is assumed that the twist angle that is the rotation angle around the axis of the front edge portion 1102 is β.

  Further, the distances from the intersections of the extension lines of the aramid hinges 143, 145, and 146 to the outer ends of the aramid hinges 143, 145, and 146 are R2, R1, and R3, respectively. Shall. Furthermore, the distance between the end point of the aramid hinge 146 and the end point of the aramid hinge 145 is L1, the distance between the end point of the aramid hinge 146 and the end point of the aramid hinge 143 is L2, and the end point of the aramid hinge 143 and the end point of the aramid hinge 145 It is assumed that the distance between them is L3. A combination (α, β) of angles representing the position of the blade portion 110 with respect to the rotor shaft 124 is expressed as follows using the rotation angles θ1 and θ2 of the upper and lower ultrasonic motors.

  The flapping stroke angle α is the rotation of the blade axis (front edge portion 1102) around the axis of the rotor shaft 124, and therefore is equal to the rotation angle θ1 of the upper ultrasonic motor 120 as shown in the following equation (1).

α = θ1 (1)
Further, since the twist angle (rotation angle β) is a rotation angle around the axis of the blade axis (front edge portion 1102) of the blade portion 110, it is calculated from the cosine value of β expressed by the following equation (2). .

cos (π−β) = − cos (β) = [L1 × L1 + L3 × L3−L2 × L2] / (2 × L1 × L3) (2)
However, with respect to L3, the following equation (3) holds.

L3 = sqrt (R1 × R1 + R2 × R2-2 × R1 × R2 × cos (θ1-θ2)) (3)
Here, sqrt () is the positive square root of the value in ().

  As is clear from FIGS. 19 and 20, β is larger than π and smaller than 2π.

π <β <2π (4)
Therefore, β is determined to be one value.

  From the above equations (1) to (4), the rotation angles θ1 and θ2 for obtaining the desired position (α, β) of the blade portion 110 can be expressed by the following equations (5) and (6). I understand.

θ1 = α (5)
cos (θ1-θ2) = [R1 × R1 + R2 × R2-L3 × L3] / 2 × R1 × R2 (6)
However, with respect to L3, the following equation (7) is established.

L3 = L1 × cos (β−π) ± sqrt (L2 × L2−L1 × L1 × sin2 (β−π)) (7)
Whether the sign of L3 is positive or negative is easily determined by considering the actual behavior of the blade portion 110.

  The state of the rising and moving apparatus of the present embodiment shown in FIGS. 19 and 20 is a state where the main surface of the blade portion 110 is parallel to a plane extending in the vertical direction, that is, a state where the twist angle β = 270 °. It is. At this time, θ1 = 0 °, θ2 = −45 ° R1 = R2 = 15 mm, R3 = 15.81 mm, L1 = 5 mm, L2 = 11.4 mm, and L3 = 11.39 mm.

  The rotation angles θ1 and θ2 of the upper and lower rotors 122 and 132 are calculated by the central processing unit 151 based on the information obtained by the magnetic encoder 126 as described above. A method for controlling the rotation angles θ1 and θ2 will be described later.

(Operation control of the rising and moving device by changing the flapping method)
<Basic operation>
The rising and moving apparatus 100 according to the present embodiment automatically takes the posture shown in FIG. 1 because the mass below the acting point of the flying force generated by the flapping motion of the blade portion 110 is large. That is, it is not necessary to control the rotation around the X axis and the rotation around the Y axis.

  On the other hand, the translational acceleration along each of the X axis, the Y axis, and the Z axis, and the rotational acceleration around the Z axis (hereinafter, also referred to as “angular acceleration”) are changed depending on the manner of flapping. Note that the force generated by the flapping motion changes with the motion of the blade portion, but here, the force of one cycle average of the flapping motion is the force generated by the flapping motion.

(Control parameter)
In the rising and moving apparatus 100 according to the present embodiment, in order for the torque assist mechanism to function properly, the amplitude of the rotation angle θ1 of the upper ultrasonic motor 120, that is, the stroke angle α needs to be fixed. Therefore, in order to control the operation of the rising and moving apparatus 100, the rotation angle θ2 of the lower ultrasonic motor 130 is changed. That is, the rising and moving apparatus 100 changes the flow of the fluid by changing the twist angle β, thereby changing the posture.

  Specifically, the timing of the twisting motion of the blade portion 110 is changed at each end of the flapping motion stroke.

(Change in levitation force in the vertical direction)
As disclosed in Dickinson et al. In the above-mentioned Non-Patent Document 2, as shown in FIG. 22, (1) the blade portion 110 is ahead of the intermediate timing of the flapping motion switching operation, that is, in the first half of the switching operation. When twisting (twisting forward turning), the levitation force increases. On the other hand, as shown in FIG. 23, (2) twisting the blade portion 110 after the intermediate timing of the flapping motion, that is, the latter half of the turning back. (Turn delayed turning back), the phenomenon that the levitation force decreases.

(Cancellation of propulsive force in the front-rear direction when the lifting force in the vertical direction changes)
Furthermore, according to the above-described operation (1) shown in FIG. 22, the inventors increase the drag along the wing advance direction before the turning operation, and the above-described operation (2) shown in FIG. Found that the drag would decrease. The fore-and-aft drag generated at the time of launch and the fore-and-aft drag generated at the time of launch are opposite to each other. Therefore, if the launching operation and the descending operation are mirror-symmetric with respect to a plane perpendicular to the front-rear direction, the drag force caused by these operations is canceled and the propulsive force becomes zero. For this reason, the rising and moving apparatus can move only in the vertical direction.

(Change in propulsive force in the longitudinal direction)
On the contrary, if the operation (1) shown in FIG. 22 differs from the operation (2) shown in FIG. 23 in the turn-up at the time of launch and the turn-down at the time of the downstroke, Differences occur between directional drags, and propulsion is generated either forward or backward. More specifically, as shown in FIG. 24, the acceleration in the forward direction is obtained by delayed switching in the second half of the downstroke, and the acceleration in the forward direction is obtained by leading back in the second half of the launching. . On the other hand, similarly, as shown in FIG. 24, in the latter half of the down stroke, the backward acceleration is obtained by the preceding turn-back, and in the latter half of the launch, the backward acceleration is obtained by the delayed turn-back.

(Cancellation of changes in levitation force when the propulsive force in the front-rear direction changes)
It is possible to cancel the change in acceleration upward and the change in acceleration downward, regardless of whether the forward acceleration or backward acceleration is performed. It is. For this reason, it is possible to obtain only the acceleration in the horizontal direction.

(3D space movement)
As described above, even if the stroke angle α of each of the left and right blade portions 110, that is, the amplitude of θ1, is fixed, only the time history of θ2 is changed, and the timing of turning back of the blade portion 110 in launching By making the timing of turning back at the down stroke different, acceleration in the vertical direction and the front-back direction can be generated in the blade portion 110. Further, by making the acceleration generated in the left blade 110 different from the acceleration generated in the right blade 110, the levitation moving device 100 is tilted to the left or right, and the levitation moving device 100 is moved in the left direction or It becomes possible to turn to the right.

<< Details of control >>
Hereinafter, the way of flapping described in (1) shown in FIG. 22 is referred to as twisting leading back (hereinafter simply referred to as “leading back”), and the way of flapping described in (2) shown in FIG. It is referred to as twist-delay cutback (hereinafter simply referred to as “delay cutback”), and the flapping method during hovering shown in FIG. 21 is referred to as center cutback.

  Further, for the sake of simplicity of explanation, hovering, translational motion in the Z-axis direction, and translational motion in the Y-axis direction are respectively left-right symmetric. Therefore, the operation of the blade is also symmetrical. For this reason, only the operation of the left blade portion 110 among the left and right symmetrical operations will be described.

<Hovering>
FIG. 21 shows how to flapping during hovering. In FIG. 21, the time history of the rotation angles θ <b> 1 and θ <b> 2 is shown together with the time history of the cross section of the blade part 110. The levitation force at this time is balanced with its own weight, and the propulsive force in the front-rear direction is zero.

<Translation control in the Z-axis direction>
FIG. 22 shows the upward movement along the Z axis, that is, how to flapping for ascent. FIG. 23 shows a downward movement along the Z axis, that is, a way of flapping for lowering. 22 and 23, the time history of the rotation angles θ1 and θ2 is shown together with the time history of the cross section of the blade portion 110. Note that the left and right blade portions 110 perform mirror-symmetric operations with the YZ plane as the symmetry plane.

  The operation shown in FIG. 22 is the preceding return operation described in (1) above, and the operation shown in FIG. 23 is the delayed return operation described in (2) above. The acceleration in the front-rear direction during these operations is zero as shown in FIG.

<Translation control in the Y-axis direction>
25 and 27 show a way of flapping for moving forward, and FIGS. 26 and 28 show a way of flapping for moving backward. Note that the left and right blade portions 110 perform mirror-symmetric operations with the YZ plane as a symmetry plane.

  When moving forward, the preceding turning operation described in the above (1) is performed in the turning back in the period including the launch end, and in the turning back in the period including the down end (2) The delayed switching operation described in (1) is performed.

  In the backward movement, the delayed switching operation described in (2) is performed in the switching in the period including the end of the launch, and in the switching in the period including the trailing end, the ( The preceding switching operation described in 1) is performed.

  As described above, the levitation force decreases at the time of delayed turnover, and the levitation force increases at the time of advance turnover. Therefore, in the translational motion in the Y-axis direction, the operations described in the above (1) and (2) It is possible to cancel out the levitation forces generated by. That is, the rising and moving apparatus 100 can move in the front-rear direction while maintaining altitude.

<Rotation control around the Z axis>
In order to rotate in the positive direction around the Z-axis, that is, to turn to the left, the left wing 110 operates in the manner of flapping for retreating, and the right wing 110 is operated in the manner of flapping for advancement. do it.

  In order to rotate in the negative direction around the Z-axis, that is, turn rightward, the left blade 110 operates in a manner of flapping for forward movement, and the right blade 110 operates in a manner of flapping for backward movement. do it.

  In any case, as described above, the levitation forces generated by the left and right blade portions 110 can be canceled out, so that the rotation of the levitation moving device 100 around the Z axis is maintained while maintaining the altitude. Done.

<Translation control in the X-axis direction>
In order to move leftward, the right wing 110 may move up and the left wing 110 moves down. As a result, the rising and moving apparatus 1 changes the posture so that the left blade portion 110 is positioned below the right blade portion 110, so that the tip of the levitation force vector is vertically upward. Tilt to the right. Thereby, the force which moves the rising and moving apparatus 100 to the left is generated.

  At this time, since the levitation force may be lowered, it is desirable to perform both the translation control in the X-axis direction and the control for the upward movement in the Z-axis direction.

<Control change method>
As described above, the rising and moving apparatus 100 can freely move in the space by properly using the three types of flapping methods having different turning timings, that is, the preceding turning, the delayed turning, and the center turning.

  Note that all three types of flapping methods with different turning-back timings are performed within a predetermined period from before to after the end of the reciprocating motion of the blade portion 110 in the front-rear direction. Therefore, within a predetermined period from the front to the back of the flapping motion stroke center, that is, within a predetermined period from the front to the rear of the stroke angle α = 0 °, the values of the rotation angles θ1 and θ2 are the speed and acceleration. Including the same.

  Therefore, as described above, if the flapping method is changed within a period in which the rotation angles θ1 and θ2 are common, the next flapping method is mechanically performed without interpolating the operation of the vane portion 110. By simply selecting, it is possible to smoothly transition from one flapping method to another flapping method without causing discontinuity in the operation of the blade unit 110.

<Control selection>
As described above, if the flapping method is changed in the phase of θ1 = 0 °, as an expression method indicating the flapping state, it is classified as down, up, and turning back at each end. Is not appropriate. It is reasonable to divide the flapping method into two, with the second half of the downhill and the first half of the turn-up and the first half of the downhill as the forward flapping motion, and the second half of the launch and the first half of the turn-up and down-down are the rear flapping motion. is there.

  That is, in the forward flapping motion and the backward flapping motion in the left and right blade portions 110, it is possible to control the flapping manner most simply by selecting the center turning, the leading turning, and the delayed turning. . Table 2 shows options corresponding to the manner of flapping of the rising and moving apparatus based on the above description.

<Supplementary items>
In this item, an example of a method for realizing the position control most simply is described. However, the flapping method of the present invention is not limited to the flapping method of this item. For example, in the present embodiment, the angular velocities of the rotation angles θ1 and θ2 are substantially constant except for the turn-back period. That is, as shown in FIG. 36, the reciprocating motion of the blade portion 110 includes the up and down motion with a constant angular velocity, and the continuous reversing motion with the changing angular velocity, that is, the reciprocating motion direction. It consists of a movement to reverse.

  The angular velocity of the turn-back motion changes so as to be continuous with the angular velocity of the launch motion and the angular velocity of the down-motion. As this reversing motion, for example, a one-variable trigonometric function or the like can be cited. However, a method of moving the rising and moving apparatus 100 by changing the reaction received from the surrounding fluid by changing the angular velocities of the rotation angles θ1 and θ2 may be used.

  In addition, in this item, for simplicity of explanation, a method is used in which all the flapping methods are expressed by a combination of the three types of turn-back patterns of the blades 110. It is an example of expression, and the flapping method of the present invention is not limited to the flapping method expressed by the above-described method.

  For example, a flapping expression method in which there are many patterns of the rotation angles θ1 and θ2 may be used. That is, a flapping method having a plurality of types of flapping timings for leading and delaying flapping, or a flapping method for expressing flapping that can continuously and freely change the flapping timing may be used. On the contrary, the center cut-back may use a flapping expression method that alternately repeats the preceding cut-back and the delayed cut-back. With such a flapping expression method, it is not necessary to store data for the center cut-back pattern in the memory, so that the number of patterns of the rotation angles θ1 and θ2 can be reduced.

  Moreover, the time history of the rotation angle θ shown in FIGS. 21 to 23 is an example of the rotation angle θ of the rising and moving apparatus 100 having the configuration shown in FIGS. 19 and 20. Actually, depending on the mechanism for driving the blade part 110, if various parameters for controlling the mechanism are set so as to realize the preceding turning and the delayed turning of the blade part 110, the rotation angle θ Is not limited to the time history of the rotation angle θ shown in FIGS.

(Position detection sensor)
The position detection sensor 160 is fixed to the main body 101. Therefore, the position and posture measured by the position detection sensor 160 are the position and posture of the rising and moving apparatus 100 itself. As shown in FIG. 29, the position detection sensor 160 provides the measured position and orientation data to the central processing unit 151 described later.

  The sensor for realizing such a function changes with the progress of technology and does not relate to the essence of the present invention, and may be any sensor. As an example of a sensor for detecting the above-described posture, a sensor that can detect a change in posture of about 0.5 ° by a combination of magnetism and acceleration is commercially available. For position detection, a sensor such as GPS (Global Positioning System) or UWB (Ultra Wide Band) can be used.

(Control circuit)
29 and 30, the control circuit 150 includes a central processing unit 151 (Central Processing Unit), a driver 152 that drives the upper and lower ultrasonic motors 120 and 130 in response to a command from the central processing unit 151, and a driver A booster circuit 153 for supplying a high voltage to 152 is provided.

  Note that the control circuit 150 may be provided at any position on the main body 101.

<Operation of control circuit>
A motion command is given to the control circuit 150 through the communication device 170 from the controller 200 operated by the operator 210. The operation command is stored in a temporary storage device (hereinafter referred to as “RAM (Random Access Memory)”) 155. The central processing unit 151 obtains flapping data from a fixed storage device (hereinafter referred to as “ROM (Read Only Memory)”) 154 based on the motion command stored in the RAM 155. After that, the central processing unit 151 gives the flapping data to the driver 152. Thereby, the rising and moving apparatus 100 performs either the above-described translational movement in the front / rear, left / right, up / down direction, or rotation about the vertical axis.

<Central processing unit>
The central processing unit 151 outputs a PWM (Pulse Width Modulation) signal and a rotation direction control signal to the driver 152 using the above-described motion command and information in the ROM 154 and RAM 155. Thereby, the ultrasonic motor 120 and 130 operate according to the motion command given to the rising and moving apparatus 100 by the operator 210 using the controller 200. As a result, a flapping method corresponding to the driving command is realized. Note that the period of the reciprocating motion of the flapping is determined using the repetition timer 156.

<Repetition timer>
The central processing unit 151 includes a repetition timer 156 as shown in FIGS. The repetition timer 156 outputs a value of −0.5 to 0.5 as a flapping motion phase ψ to the central processing unit 151 at a repetition period of 50 Hz. However, the phase ψ of the flapping motion is counted up from −0.5, and when the value becomes 0.5, the value of the phase ψ is again counted up from −0.5.

  Corresponding to one cycle of the repetitive timer 156, the front flapping motion in which the blade portion 110 is located in front of the central position of the reciprocating motion, and the rear flapping motion in which the blade portion 110 is located behind the central position of the reciprocating motion. Each of the exercises is performed. That is, one cycle of the repetition timer 156 corresponds to twice the cycle of the flapping motion. In the present embodiment, if the phase ψ is positive, the rising and moving apparatus 100 performs backward flapping motion, and if the phase ψ is negative, the rising and moving apparatus 100 performs forward flapping motion.

  In recent years, many microcontrollers used for device control include a function called auto reload timer, which is almost the same as the repeat timer described in this section. The function of the repeat timer in this section can be realized.

<Flapping data stored in ROM>
The ROM 154 stores flapping data. The flapping data is time history data of the duty ratio of the PWM control signal transmitted to the driver 152. The ultrasonic motors 120 and 130 are applied with a driving voltage having a frequency of 250 KHz and a duty ratio fixed at 50%. On the other hand, as shown in FIG. 31, the duty ratio of the PWM control signal transmitted to the driver 152 is the ON period with respect to the sum of the ON period and the OFF period of the 250 kHz drive voltage with the duty ratio fixed at 50%. It is a ratio.

  That is, the flapping data corresponding to the three modes of the preceding switching, the delay switching, and the center switching described above is stored in the ROM 154 as the duty ratio of the PWM control signal transmitted to the driver 152 corresponding to the flapping motion phase ψ. Stored in advance.

  Note that the duty ratio of the PWM control signal transmitted to the driver 152 is indicated by Duty1 (ψ, MODE) and Duty2 (ψ, MODE). However, as shown in Table 2, when −0.5 ≦ ψ <0.5, MODE = 1 is a leading loopback, MODE = 0 is a central loopback, and MODE = −1 is a delayed loopback. To do.

  FIGS. 32 to 34 show the values of Duty 1 and Duty 2 in the center turning, the leading turning, and the delayed turning when the backward turning operation is performed, respectively. However, if Duty 1 and Duty 2 are negative values, it means that the blade portion 110 is moving from the rear to the front with respect to the center position of the reciprocating motion. In the present embodiment, each Duty function is expressed as Duty1 (−ψ) = − 1 × Duty1 (0.5 + ψ) because the flapping operation is symmetric with respect to a plane perpendicular to the front-rear direction. obtain.

  That is, only by code conversion, each Duty value in a region where ψ is negative is calculated using a function of each Duty in a region where ψ is positive. For this reason, the above Duty functions are stored in the ROM 154 only in the area where ψ is positive. According to this, the data amount of each Duty function stored in the ROM 154 can be reduced by half. Therefore, in the present embodiment, only the region where ψ is positive is shown in each Duty function.

  In addition, since the right wing part 110 and the left wing part 110 are mirror-symmetric with respect to the Z axis, the left-handed coordinates obtained by inverting the positive and negative in the X-axis direction of the above-described coordinate system are adopted. If so, Duty 1 and Duty 2 similar to those described above can also be used in the control of the right blade portion 110.

<Operation of central processing unit>
The central processing unit 151 determines whether the current flapping motion is a forward flapping motion or a backward flapping motion based on the sign of the phase ψ. After that, the central processing unit 151 determines the flapping state based on the data shown in Table 2 stored in the ROM 154, and according to the motion command stored in the RAM 155 obtained by the communication device 170. The value of MODE is determined.

  Further, the central processing unit 151 obtains the values of Duty 1 and Duty 2 stored in the ROM 154 based on the value of the phase ψ described above. The absolute value of this value is the duty ratio of the PWM control signal transmitted to the driver 152.

  The sign of this value is the rotation direction of each of the upper and lower ultrasonic motors 120 and 130 transmitted to the driver 152. The former is expressed by a command ABS (Duty), for example, and the latter is expressed by a command SIGN (Duty), for example. These commands are built into the microcontroller. Calculations using these commands are easily executed in a general microcontroller.

  Based on the above-described duty ratio, the central processing unit 151 outputs an ON / OFF signal for PWM control corresponding to the flapping method to the driver 152 and a rotation direction control signal corresponding to the positive or negative of the phase ψ. Output to the driver 152.

  In this embodiment, since the resonance frequency of diaphragm 1211 is 250 kHz, for example, if PWM control with a resonance frequency of 2.5 kHz is executed, it is possible to control the ultrasonic motor in 100 steps. is there.

<Driver operation>
The driver 152 rotates / stops and rotates / inverts the ultrasonic motor 120 in accordance with ON / OFF of the PWM control signal and the rotation direction control signal given from the central processing unit 151.

  Since the ultrasonic motor 120 has a self-position holding function, the rotation and stop operations are realized by turning on / off power supply, which will be described later, according to PWM ON / OFF.

  Further, as shown in FIGS. 9 and 13, in the ultrasonic transducer 121, by changing the difference between the phase of the potential φA applied to the back electrode 1217 and the phase of the potential φB applied to the front electrode 1216, A change between positive and negative rotation of the upper rotor 122 can be made.

  The driver 152 receives a PWM signal from the central processing unit 151, controls a circuit that creates data of potentials φA and φB, and high voltage power supplied from the booster circuit 153, and controls the surface electrode 1216 of the ultrasonic transducer 121. And a circuit for applying potentials φA and φB to the back electrode 1217. The former can be easily realized by using a general timer circuit or a CPU (Central Processing Unit), and the latter using, for example, a general CMOS (Complementary Metal Oxide Semiconductor) circuit called an H bridge. It can be easily realized. According to our experiments, these circuits can be contained in a small package of 3 mm × 3 mm × 0.85 mm, and the weight of the package is about 25 mg.

Generally, the former program is expressed as follows.
: Label
if (PWM = ON) then
if (rotation direction = forward direction) then
φA = 1
φB = 1
φA = 0
φB = 0
end if
if (rotation direction = reverse direction) then
φB = 1
φA = 1
φB = 0
φA = 0
end if
end if
goto label
However, these are examples for simply expressing the operation of the former circuit. In the actual program, timing adjustment is performed so that each of φA and φB becomes a rectangular wave of 250 kHz. Need to be inserted.

<Boost circuit>
The step-up circuit 153 changes the voltage (3 V) of the power source 190 to a voltage of +30 V necessary for driving the ultrasonic motor, and applies a voltage of +30 V to the driver 152. As the booster circuit 153, a general DC (Direct Current) -DC converter is used. As an example, a small package of 3 mm × 3 mm × 0.85 mm is commercially available. The mass of the booster circuit 153 is about 25 mg.

<Block diagram>
A block diagram of the above-described control system is shown in FIG. Since the driving methods of the four ultrasonic motors are the same, only the control system of the upper ultrasonic motor 120 that drives the left blade 110 is shown in FIG. 29, and the other control systems are omitted. . FIG. 30 is a functional block diagram for explaining the flow of data processing in the flowchart of FIG. 35 described later.

<Control flow chart>
Next, an example of a flowchart for controlling the rising and moving apparatus will be described with reference to FIG. In addition, this flowchart is an example and can be changed by the application of the rising and moving apparatus 100.

  In the following flowchart, the repetition timer 156 operates constantly using the above-described auto reload timer, and in step S1, it is assumed that the process is started from a state where ψ = 0. At this time, it is assumed that α = 0 °.

Step S1 <Determination of floating movement device operation>
The motion command of the operator 210 transmitted from the controller 200 is stored in the RAM 155 via the communication device 170.

Step S2 <Flapping status detection>
The central processing unit 151 recognizes the flapping state at the current time of the rising and moving apparatus 100 based on the data of the value of the phase ψ transmitted from the repetition timer 156. Specifically, if the value of the phase ψ is positive, the central processing unit 151 determines that the rising and moving apparatus 100 is performing the flapping motion, and if the phase ψ is negative, the rising and moving apparatus 100 is Judge that he is flapping forward.

Step S3 <determining flapping mode>
The central processing unit 151 selects the row component of Table 2 according to the motion command, and selects the column component of Table 2 according to the flapping state. Thereby, the central processing unit 151 selects any one of the flapping modes, that is, the value of MODE, from among the center switching, the leading switching, and the delayed switching. Data of the selected flapping mode is stored in the RAM 155.

Step S4 <Duty ratio determination>
The central processing unit 151 determines the duty of the PWM control signal transmitted to the driver 152 from the Duty1 (ψ, MODE) and Duty2 (ψ, MODE) data stored in the ROM 154 based on the flapping mode data. Select the ratio.

Step S5 <Driver Drive>
The central processing unit 151 outputs a rotation direction control signal to the driver 152 according to whether the duty ratio of the PWM control signal is positive or negative, and outputs a PWM signal having the duty ratio to the driver 152. That is, when ABS (A) is an absolute value of A and SIGN (A) is a sign of A, the rotation direction control signal is SIGN (Duty) and the duty ratio is ABS (Duty). Here, Duty means Duty 1 (ψ, MODE) and Duty 2 (ψ, MODE) corresponding to the upper and lower ultrasonic motors 120 and 130.

Step S6 <Ultrasonic motor drive>
The driver 152 applies a rectangular wave voltage having an amplitude of 30V and a frequency of 250 kHz to the front electrode 1216 and the back electrode 1217 in accordance with the rotation direction control signal. These two rectangular waves have a phase difference of ± 90 °. Specifically, the driver 152 applies a rectangular wave potential φB to the surface electrode 1216 of the ultrasonic transducer 121, and applies a rectangular wave potential φA to the back electrode 1217 of the ultrasonic transducer 121. The phase of the rectangular wave potential φA and the phase of the rectangular wave potential φB are shifted by ± 90 °.

Step S7 <Next Flapping Mode Selection>
In the case of ψ = 0 or ψ = −0.5, this means that the flapping state has been changed, so the processing of step S1 is executed again, and the flapping mode is updated including the change of the motion command. The When ψ = 0 or other than ψ = −0.5, the flapping mode is not updated, the process of step S4 is executed, and a new phase ψ is set.

<Supplement>
In addition, the form of the said instruction | command is an example for description to the last, and is not limited to this. For example, a method in which a smooth speed command without a quantization error can be obtained by giving the speed command as an analog signal as a voltage value may be used. In addition, the voltage required for driving the ultrasonic motor can be changed as technology advances. For example, if an ultrasonic motor that can be driven at 3 V or less, which is the drive voltage of the current main TTL (Transistor Transistor Logic) -IC (Integration Circuit) or CPU (Central Processing Unit), is realized, the booster circuit 153 is unnecessary. It becomes.

  Further, in the present embodiment, for the sake of simplicity of explanation, the method of uniquely selecting the flapping method is described without performing feedback control, but simply by the command of the controller 200. However, the control method of the rising and moving apparatus 100 is described. Is not limited to the method described above.

  For example, feedback control may be used in which the central processing unit 151 obtains position and orientation information from the position detection sensor 160 and newly creates a motion command based on the information.

  Further, in this embodiment, for the sake of simplicity of explanation, the explanation is made under the assumption that the rotational speeds of the ultrasonic motors 120 and 130 are uniquely determined according to the duty ratio. In some cases, this assumption may not hold. In this case, the duty ratio may be adjusted with reference to the values of the rotation angles θ1 and θ2 of the upper and lower ultrasonic motors 120 and 130 obtained from the signal of the upper magnetic encoder 126.

  Note that, in the above-described control of the rising and moving apparatus, ideally, it is desirable that the computation time required for controlling the flapping motion for obtaining high mobility is short. The rising and moving apparatus is preferably lightweight. For this reason, it is desirable that the algorithm for controlling the flapping motion is as simple as possible. Considering these, the requirements for a flapping flying device with high mobility are singleness, continuity, selectivity, independence, and simplicity.

  Singleness means that the fluid force generation mechanism can independently change the direction of the fluid force regardless of the posture of the body on which the fluid force generation mechanism is installed. An example of a rising and moving apparatus lacking in isolation is a helicopter in which a rotor is fixed to a fuselage.

  Continuity means that the flapping motion is changed continuously without causing a large acceleration in the trunk.

  Selectivity means that the flapping movement is changed independently regardless of the past flapping movement history. An example of a rising and moving apparatus lacking selectivity is the MFI (Micromechanical Flying Insect) by Ron Fearing et al. Since the blade part is driven by resonance, the flapping method can only be gradually changed over a plurality of periods.

  Independence means that the fluid force generated by the fluid force generation mechanism is not affected by the history of flapping motion changes. Specific scenes lacking independence include the phenomenon of being affected by airflow generated by previous flapping movements.

  Simplicity means that the algorithm for realizing the flapping motion change is as simple as possible.

(Examination of high mobility requirements)
<< Singleness >>
As shown in Table 2, the control of the flapping rising and moving apparatus 100 in the present embodiment is all performed by selecting the timing of the twisting operation of the wings at both ends of the flapping motion. This is not constrained by the posture of the trunk, so that individuality is ensured.

  More specifically, the horizontal component of the acceleration of the blade portion 110 can be controlled independently when one of the preceding flapping and the delayed flapping shown in FIGS. 24 to 26 is selected. Thus, the direction of the horizontal direction component of the acceleration of the blade portion 110 in one cycle of the flapping motion can be directed either forward or backward. Therefore, the rising and moving apparatus can change the direction of the fluid force by changing only the operation of the blade part 110 without changing the posture of the main body part (body) 101.

<< Continuity >>
The above-described twisting, that is, turning-back operation of the blade portion 110 is different only in a specific period including the start point or end point of the reciprocating motion of the blade portion 110 in the flapping motion, and in any flapping manner, the center position of the reciprocating motion of the flapping motion is different. In the predetermined period including, the movement of the blade part 110 is the same. That is, the plurality of types of flapping motion include a common motion at a timing including the center position of the reciprocating motion.

  For this reason, even if the flapping method is changed during the flapping motion, if the flapping method is changed at the timing of performing a common operation, the blade portion in the change from one flapping method to another flapping method The behavior of 110 is continuous. In other words, the flapping method is smoothly changed.

  More specifically, in the rising and moving apparatus of the present embodiment, the ROM 154 of the control circuit 150 has a plurality of types of data (see Table 2) for causing the blade section 110 to flutter, and the plurality of types of data To control the actuators (upper and lower ultrasonic motors 120 and 130). Each of the plurality of types of data can specify the operation of one cycle of the reciprocating motion of the blade unit 110, and the plurality of types of data perform a flapping motion common to the blade unit 110 in a predetermined period of one cycle of the reciprocating motion. It is something to be made.

  Specifically, the plurality of types of data are three types of data consisting of data for preceding return, data for center return, and data for delayed return, as shown in FIGS. 25 and 26 and Table 2. This is data for making the flapping shown (stopping, ascending, descending, advancing, retreating, moving right, moving left, turning right, and turning left). The control circuit 150 performs a flapping motion in which the actuator (ultrasonic motors 120 and 130) is identified by one of a plurality of types of data during a predetermined period including the center position of the reciprocating motion of the vane portion 110. The control is switched from the control to make the blade part 110 perform the flapping motion specified by the other data among the plurality of types of data.

  According to said structure, the aspect of flapping motion can be changed, without a discontinuous change arising in the motion of a blade | wing part. Therefore, “continuity” of flapping motion is realized.

  In addition, the flapping portion draws a trajectory different from the flapping motion specified by other data performed in each of two specific periods of one cycle of the reciprocating motion in the flapping motion specified by one data. It is desirable. According to this, the blade | wing part 110 changes sequentially into four types of states at maximum during 1 period of a reciprocating motion. Therefore, the variation of flapping movement becomes abundant.

<< Independence >>
Further, the two specific periods may be shifted from each other by a half cycle. According to this, one specific period and another specific period are repeated with the largest shift in time. Therefore, the influence of the airflow generated due to the flapping motion in one specific period has the smallest effect on the airflow generated due to the flapping motion in the other specific period. Therefore, “independence” in changing the flapping movement is ensured.

  In addition, it is desirable that one and the other of the two specific periods include a timing positioned at one end of the reciprocating motion of the blade portion 110 and a timing positioned at the other end of the reciprocating motion of the blade portion 110, respectively. That is, it is desirable that the turn-back of the blade portion 110 is performed in a period including the end of the reciprocating motion in the front-rear direction. According to this, the position of the blade part 110 in one specific period is farthest from the position of the blade part 110 in another specific period. Therefore, the influence of the airflow generated due to the flapping motion in one specific period has the smallest effect on the airflow generated due to the flapping motion in the other specific period. Therefore, “independence” in changing the flapping movement is ensured.

  That is, in the rising and moving apparatus of the present embodiment, a plurality of types of flapping motions in which the motion of the blade portion 110 is different only during a specific period including both ends of the flapping motion. Therefore, the influence of the behavior of the fluid generated by the previous flapping motion on the current flapping motion is reduced as much as possible. Thereby, independence is realized.

<< Simpleness >>
One direction component of the fluid force generated by the flapping motion in one of the two specific periods and one direction component of the fluid force generated by the flapping motion in the other of the two specific periods are Offset. According to this, the mode of change in the posture of the rising and moving apparatus due to the change of the flapping motion is simplified. As a result, control for bringing the rising and moving apparatus into a desired posture is facilitated. Therefore, “simpleness” in changing the flapping movement is ensured.

  More specifically, in the rising and moving apparatus of the present embodiment, as shown in Table 2, the rising and moving modes of the rising and moving apparatus (stop, rise, descend, advance, retract, move left, move right) , Left turn, right turn) and a flapping method for realizing the mode of rising and moving (combination of preceding turning, center turning, and delayed turning) has a one-to-one correspondence. Therefore, the change of the floating movement mode can be realized by an extremely simple algorithm that only changes the data of the drive duty ratios of the upper and lower ultrasonic motors 120 and 130 corresponding to the manner of flapping. Therefore, simplicity is realized in the rising and moving apparatus of the present embodiment.

  Further, the flapping motion specified by the data for hovering among the plurality of data is to cause the wing portion 110 to perform a reciprocating motion in the front-rear direction that is mirror-symmetrical with respect to a plane including the up-down direction and the left-right direction. The control circuit 150 includes basic data (FIGS. 32, 33, and 34) for moving the blade portion 110 from the center position of the reciprocating motion in the front-rear direction to one end of the reciprocating motion in the front-rear direction, and the reciprocating motion in the front-rear direction. An algorithm or a calculation function unit for converting basic data so as to move the blade portion 110 from the center position of the motion to the other end of the reciprocating motion in the front-rear direction, that is, (Duty1 (−ψ) = − 1 × Duty1 (0 .5 + ψ)).

  According to this, the control circuit 150 can cause the blade unit 110 to perform a desired flapping motion only by having data for only a half period of one cycle of the flapping motion. Therefore, the memory capacity for storing data in the control circuit 150 can be reduced. As a result, the rising and moving apparatus can be reduced in size and weight.

(Communication device)
The communication device 170 receives information on acceleration required for the rising and moving device 100 from the external controller 200, and gives the information to the central processing unit 151 of the control circuit 150. Further, the communication device 170 transmits image information obtained by the image sensor 180 to the external controller 200.

(Power supply)
The power source 190 as a driving energy source of the present invention may be any power source as long as it has a discharge characteristic capable of supplying necessary power and has a mass that does not hinder flying.

  The power supply 190 used by the present inventors is a lithium ion battery having a mass of 0.7 g, and according to the calculation by the present inventors, 0.6 W can be supplied for about 50 seconds. The power source 190 is provided in the lower part of the main body 101. Therefore, the power source 190 is positioned below the bearing 123, which is the point of action of the fluid reaction force received by the blade portion 110, and autonomously stabilizes the posture of the rising and moving apparatus 100.

  Other power sources include fuel cells, capacitors such as electric double layer capacitors, solar cells, and wired supply. Moreover, these power supplies may be used together. For example, in addition to the lithium ion battery, a solar battery may be provided on the surface of the blade portion 110, and these electric powers may be used together.

(Body)
The main body 101 includes a bottom plate 102, an upper plate 103, a frame portion 104 that connects the bottom plate 102 and the upper plate 103, and legs 105 provided on the bottom plate 102.

The bottom plate 102 and the top plate 103 are made of CFRP having a thickness of 0.2 mm, and the frame portion 104 is made of stainless steel having a thickness of 35 μm. The leg 105 is a CFRP hollow pipe having a wall thickness of 40 μm, a length of 10 mm, and a diameter of 0.5 mm.

  The top plate 103 and the bottom plate 102 are also connected by a rotor shaft 124, a support shaft 127, and a main body reinforcing pole 112.

(Image sensor)
The image sensor 180 is a CMOS (Complementary Metal Oxide Silicon) imager, and its mass is 200 mg. Image information acquired by the image sensor 180 is transmitted to the external controller 200 by the communication device 170.

(Probability of ascent)
<Mass>
According to the calculation by the present inventors, the levitation force generated by one blade portion is 1.2 gf. Therefore, the levitation force generated by the two blade portions is 2.4 gf. Table 3 shows the mass of each component. As shown in Table 3, the total mass of the rising and moving apparatus 100 is 2.17 gf, and this value is smaller than the above-described rising force of 2.4 gf. Therefore, the rising and moving apparatus 100 can rise.

<Power consumption>
According to the calculations by the present inventors, the mechanical power required for the wing portion of the rising and moving apparatus 100 to generate a flying force of 1.2 gf is a maximum of 40 mW for both the upper and lower ultrasonic motors 120 and 130. The energy conversion efficiency of each ultrasonic motor is 33%. Therefore, the maximum power required for levitation is about 120 mW per ultrasonic motor, and the sum of those powers is 480 mW. Since the total efficiency of the driver 152 and the booster circuit 153 is about 85%, the power required for driving the four ultrasonic motors is 565 mW at the maximum.

  The power consumption of the central processing unit 151 is 5 mW. The power consumption of the magnetic encoder 126 is 5 mW. The power consumption of the position detection sensor 160 is 5 mW. The power consumption of the image sensor 180 is 15 mW. The power consumption of the communication device 170 is 5 mW.

  The sum total of these electric powers is a maximum of 600 mW, and is a value within the range of the power supply 190. Therefore, the rising and moving apparatus 100 can float using only the power supplied from the built-in power source 190. Therefore, the rising and moving apparatus 100 can be a stand-alone robot that can fly and fly independently without receiving power from the outside.

Next, a characteristic configuration of the present invention will be described.
FIG. 37 shows the rotation angle and the time history of β. This is rewritten to the time history of θ1 and θ2 shown in FIGS. In practice, the blade portion is deformed as shown in FIG. Further, the torque required for the upper and lower ultrasonic motors at this time is as shown in FIG.

(Mechanical interaction generation mechanism)
Next, a mechanical interaction generation mechanism will be described with reference to FIGS. 40 to 52.

  In the mechanical interaction generation mechanism according to the embodiment described below, the potential energy is a minimum value when the twist angle β around the front edge 1102 of the blade 110 is a specific value. A mechanical interaction is generated in the upper rotor 122 and the lower rotor 132. The reason why the twist angle β is fixed to a specific value in a certain period is that the blade part 110 is stable for flapping flight in a predetermined period including the central part of the reciprocating motion of the blade part 110 in the front-rear direction. This is because it is desirable to fix the angle of attack.

  In addition, the potential energy becomes a minimum value when the control for changing the difference between the phase of the upper rotor 122 and the phase of the lower rotor 132 is not performed. This means preventing or suppressing a change in the positional relationship. In order to prevent or suppress a change in the relative positional relationship between the upper rotor 122 and the lower rotor 132, control for changing the difference between the phase of the upper rotor 122 and the phase of the lower rotor 132 is not performed. In this case, it means that the twist angle of the blade portion 110, in other words, the angle of attack (= 90−torsion angle β) is to be maintained at a substantially constant value so as not to hinder flapping flight.

  More specifically, the control for changing the phase difference between the upper rotor 122 and the lower rotor 132 is performed to prevent or suppress the change in the relative positional relationship between the upper rotor 122 and the lower rotor 132. If there is no force that causes the angle of attack to fluctuate due to vibration, etc., a force is generated to maintain the angle of attack at a desired value, or the angle of attack varies slightly. This means that a force is generated to return the angle of attack to a desired value. Note that when the control for changing the difference between the phase of the upper rotor 122 and the phase of the lower rotor 132 is performed, the relative positional relationship between the upper rotor 122 and the lower rotor 132 easily changes.

  Further, in the rising and moving apparatus according to the present embodiment, the difference between the phase of the upper rotor 122 and the phase of the lower rotor 132 is kept constant at the timing at which the twist angle β of the blade portion 110 should be kept substantially constant. As long as the mechanism causes a mechanical interaction between the upper rotor 122 and the lower rotor 132 as described above, the present invention is not limited to the following mechanism, and any mechanism may be provided. Note that the timing at which the twist angle β of the blade portion 110 should be maintained substantially constant means that the control circuit 150 fixes the phase difference between the rotation angle of the upper rotor 122 and the rotation angle of the lower rotor 132 to a predetermined value. This is the timing at which the command signal is given to the upper rotor 122 and the lower rotor 132.

  Note that the phase difference between the rotation angle of the upper rotor 122 and the rotation angle of the lower rotor 132 changes at the above-described timing, as described in the section of the problem to be solved by the invention. It is considered that the driving torque of the 122 and the lower rotor 132 is greatly influenced by the interaction between the blade part 110 and the surrounding fluid, the inertial force of the blade 110 part, and the deformation of the blade part 110.

  First, the mechanical interaction generation mechanism of the first embodiment will be described with reference to FIGS.

<Configuration>
As shown in FIGS. 40 to 45, the mechanical interaction generating mechanism of the present embodiment includes a first upper rotor groove 1221 and a second upper rotor groove 1222, a first lower rotor groove 1321 and a second The lower rotor groove 1322 and a sphere 1421 having a radius r.

  The first upper rotor groove 1221 and the second upper rotor groove 1222 are formed on the surface of the upper rotor 122 that faces the lower rotor 132. The first lower rotor groove 1321 and the second lower rotor groove 1322 are formed on the surface of the lower rotor 132 that faces the upper rotor 122. The spherical body 1421 is sandwiched between the upper rotor 122 and the lower rotor 132. It is assumed that the cross-sectional shape of the angular rotor groove is an isosceles triangle having an apex angle η and a height h.

<Basic principle>
As shown in FIGS. 41 and 42, the difference dθ1 and dθ2 between the rotation angle of the upper rotor 122 and the rotation angle of the lower rotor 132 for giving a desired twist angle β to the blade portion 110 is expressed as dθ1>. It is assumed that the relationship dθ2 is established. Note that. It is assumed that dθ1 is a positive value and dθ2 is a negative value.

  According to the mechanical interaction generating mechanism of the present embodiment, the rotation angle of the upper rotor 122 and the lower rotor 132 in each of the first stable state shown in FIG. 41 and the second stable state shown in FIG. The difference from the rotation angle is fixed.

  As shown in FIG. 41, the first stable state is a state in which the difference between the rotation angle of the upper rotor 122 and the rotation angle of the lower rotor 132 is dθ1, and the first upper rotor groove 1221 and the second rotor state In this state, a sphere 1421 is fitted in each of the lower rotor grooves 1322.

  As shown in FIG. 42, the second stable state is a state in which the difference between the rotation angle of the upper rotor 122 and the rotation angle of the lower rotor 132 is dθ2, and the second upper rotor groove 1222 and the first In this state, a sphere 1421 is fitted in each of the lower rotor grooves 1321.

  The first upper rotor groove 1221 and the second upper rotor groove 1222, and the first lower rotor groove 1321 and the second lower rotor groove 1322 are the upper rotor 122, the lower rotor 132, Are formed at positions where the relative positional relationship is fixed.

  When the first upper rotor groove 1221 is opposed to the first lower rotor groove 1321, the second upper rotor groove 1222 is opposed to the second lower rotor groove 1322, and the sphere 1421 is the first upper rotor groove. It exists in the position of the same distance from both the groove | channel 1221 and the 2nd upper rotor groove | channel 1222, in other words, the position of the equal distance from both the 1st lower rotor groove | channel 1321 and the 2nd lower rotor groove | channel 1322. An arc-shaped groove is provided between the first upper rotor groove 1221 and the second upper rotor groove 1222 so that the sphere 1421 does not protrude outward from the upper rotor 122 and the lower rotor 132. An arc-shaped groove is provided between the first lower rotor groove 1321 and the second lower rotor groove 1322, and the sphere 1421 reciprocates along the two arc-shaped grooves so as to draw an arc-shaped locus. May be.

  In each of the first stable state and the second stable state, the sphere 1421 is fitted in each of the two grooves. In the present embodiment, since both the upper rotor 122 and the lower rotor 132 are made of elastically deformed members, changing the difference in rotation angle between the two rotors by dθ from this state is shown in FIG. As indicated by the solid line, this means that the upper rotor 122 and the lower rotor 132 are elastically deformed to increase the distance between the two rotors. At that time, since a restoring force against the elastic deformation is generated, the force acts in a direction to return the dθ to zero. Therefore, in two stable states, (dθ1−dθ2) is maintained at a substantially constant value, that is, dθ1 or dθ2. Therefore, the rotation angle differences dθ1 and dθ2 for realizing the desired twist angle β are maintained in the downhill and the uphill, respectively, without requiring special control.

Next, referring to FIG. 45, when turning back from launch to down, that is, when reversing the reciprocating motion in the front-rear direction, in other words, from the first stable state to the second stable state. The forces that occur when transitioning are explained. For simplicity of explanation, only the mechanical interaction between the upper rotor 122 and the sphere 1421 will be described. FIG. 45 shows the cylindrical coordinate system around the rotation center axis of the upper rotor 122 developed on a plane.
In FIG. 45, all of the first upper rotor groove 1221, the second upper rotor groove 1222, the first lower rotor groove 1321, and the second lower rotor groove 1322 are grooves having a width W and an apex angle η. Suppose that

  As shown in FIG. 45, when the rotation angle of the upper rotor 122 is changed by dθ (<0) from the first stable state, assuming that φ = π−η / 2, the sphere 1421 will first As for the horizontal component Ft and the vertical component Fr of the force applied to the upper rotor groove 1221 (hereinafter referred to as “interaction force”), the relationship of Ft = Fr × tanφ is established.

  Here, the vertical component Fr is a force that opposes the restoring force generated in each of the upper rotor 122 and the lower rotor 132 when the distance between the upper rotor 122 and the lower rotor 132 is increased by dh. Therefore, assuming that the spring constant of the restoring force is k, as shown in FIG. 45, if the distance between the contact point of the upper rotor 122 and the sphere 1421 from the rotation center axis of the upper rotor 122 is R, dh = R.times.d.theta..times.tan.phi., So that the relationship Fr = k.times.dh = k.times.R.times.d.theta..times.tan.phi. Is established. That is, the relationship Ft = k × R × tan 2φ × dθ is established.

  When the spherical body 1421 moves away from the first upper rotor groove 1221, that is, when dθ <−W / 2R, in other words, when the sphere 1421 starts to change from the first stable state to the unstable state, the horizontal component Since no force is generated, Ft = 0. The unstable state is a state in which the sphere 1421 is not fitted in any groove and is rolling between the grooves.

  When shifting from the unstable state to the second stable state, a mirror-symmetric change occurs with respect to the change when shifting from the first stable state to the unstable state. Therefore, the horizontal component Ft of the interaction force applied to the upper rotor 122 during the transition from the launch to the down is as shown in FIG. In addition, the graph of the horizontal component of the interaction force applied to the lower rotor 132 is a graph in which the sign of the graph shown in FIG. 46 is reversed, that is, a graph that is a vertical object with respect to the axis of θ1−θ2. .

  The horizontal component Ft is added to the original torque shown in FIG. Therefore, when determining the shape, depth, width, etc. of each of the upper rotor grooves 1221 and 1222 and the lower rotor grooves 1321 and 1322, the total value of the horizontal component Ft and the original torque shown in FIG. Care must be taken not to exceed the respective torque tolerances of the rotor 122 and the lower rotor 132.

<Torque smoothing effect>
According to the configuration of the present invention, the upper ultrasonic motor 120 and the lower ultrasonic motor 130 are subjected to a dynamic interaction in each of the above two stable states. It becomes impossible to distinguish from the torque of the sonic motor 130. Therefore, as shown in FIG. 47, the total torque generated independently in each of the upper ultrasonic motor 120 and the lower ultrasonic motor 130 becomes the torque of the ultrasonic motor.

  Therefore, it is possible to collectively control the upper ultrasonic motor 120 and the lower ultrasonic motor 130 which are performed independently. Therefore, the control algorithm can be simplified.

  Furthermore, as shown in FIG. 47, pulsation generated by mutual transmission of force between the upper ultrasonic motor 120 and the lower ultrasonic motor 130 is reduced. For this reason, the amplitude of the torque fluctuation required for the two ultrasonic motors is reduced, and the conditions required for the control are greatly relaxed.

<Supplement>
The groove shape described in this embodiment is an example for simple explanation. The characteristic configuration of the present invention is that the deformation of the upper rotor 122 and the lower rotor 132 is used to move the sphere 1421 between the two grooves and fit into them so that the upper rotor 122 and the lower rotor 132 are twisted. This is for maintaining the angle β at a constant value, and is not limited to the groove shape and the number of grooves described above.

  For example, if the groove shape is not an isosceles triangle and the contact angle φ approaches 0 as it approaches the edge of the groove as shown in FIG. 48, the horizontal component Ft of the interaction force is smoothed. Can be changed. Further, for example, a truncated cone (cone) 1421 shown in FIG. 43 may be used instead of the sphere 1421. Even in this case, the upper rotor 122 and the lower rotor 132 are elastically deformed or the truncated cone (cone) 1421 is prevented so that the truncated cone (cone) 1421 does not protrude outward. It is desirable to be guided by an arcuate guide member provided on the outer side of the lens.

  Further, instead of the sphere 1421, a rod-shaped structure having an elliptical cross section may be used. In this case, the deformation amount of the upper rotor 122 and the lower rotor 132 can be made different by utilizing the difference between the major axis and the minor axis of the ellipse. In this case as well, as in the case where the truncated cone (conical body) 1421 is used, the cross section gradually becomes smaller toward the respective rotation center axes of the upper rotor 122 and the lower rotor 132. It is desirable. Further, a plurality of grooves may be provided in each of the upper rotor 122 and the lower rotor 132, and a plurality of stable states may be formed.

  As described above, in the rising and moving apparatus of the present embodiment, the upper rotor 122 includes the first upper rotor groove 1221 and the second upper rotor groove 1222 as examples of the upper concave portion on the surface facing the lower rotor 132, and The lower rotor 132 includes a first lower rotor groove 1321 and a second lower rotor groove 1322 as an example of a lower concave portion on a surface facing the upper rotor 122. In addition, the above-described mechanism performs a reciprocating motion so as to draw an arc-shaped locus while being sandwiched between the upper rotor 122 and the lower rotor 132, and when the twist angle β is a specific value, A sphere or cone that fits in each of the one upper rotor groove 1221 and the second lower rotor groove 1322 or that fits in the second upper rotor groove 1222 and the first lower rotor groove 1321. 1421 is included.

  Therefore, the aforementioned mechanical interaction can be easily generated. In particular, when a truncated cone (conical body) 1421 is used, the stress applied to the upper rotor 122 and the lower rotor 132 can be dispersed over a wide range.

  In the present embodiment, at the timing when the control circuit 150 performs control to reduce the difference between the rotation angle of the upper rotor 122 and the rotation angle of the lower rotor 132, the rotation angle of the upper rotor 122 The first upper rotor groove 1221, the second upper rotor groove 1222, the first lower rotor groove 1321, and the second lower rotor can be reduced so that the difference from the rotation angle of the lower rotor 132 can be reduced. The shape and size of the groove 1322 are set.

<Embodiment 2>
Next, the rising and moving apparatus according to the embodiment of the present invention will be described with reference to FIGS. 49 and 50.

  The constituent elements other than the mechanical interaction generating mechanism of the rising and moving apparatus of the present embodiment are the same as those of the rising and moving apparatus of the first embodiment. Only the example will be described. In the present embodiment, for the sake of simplicity of explanation, the same numbers are assigned to the same components as those in Embodiment 1, and the description thereof will not be repeated unless particularly necessary.

(Mechanical interaction generation mechanism)
<Configuration>
As shown in FIGS. 49 and 50, the upper rotor 122 and the lower rotor 132 are provided with magnets 1422 and 1423 in which poles having the same polarity face each other when the twist angle β = 0. In addition, stoppers 1424 and 1425 are provided to limit the range of the rotation angles θ1 and θ2 so that the twist angle β does not exceed the desired values of down and up.

<Principle>
The difference between the rotation angle of the upper rotor 122 and the rotation angle of the lower rotor 132 is increased by the repulsive force of the magnets 1422 and 1423. Finally, the stoppers 1424 and 1425 abut against the side frames 132a and 132b, respectively. In each of these two states, a stable state is formed in which the upper rotor 122 and the lower rotor 132 are integrated.

  For this reason, the stable state similar to the two stable states described in the first embodiment can also be realized by the mechanical interaction generating mechanism of the rising and moving apparatus of the present embodiment.

  According to the mechanical interaction generation mechanism of the present embodiment, the above-described two stable states can be easily realized by using the stoppers 1424 and 1425. Further, as shown in FIG. 39, the magnitude of torque required for the upper rotor 122 and the lower rotor 132 is not constant. Therefore, the repulsive force of the magnets 1422 and 1423 always generates a force for generating a state in which the stoppers 1424 and 1425 are in contact with the side frames 132a and 132b, respectively. The side frame 132a and the side frame 132b are connected by an arcuate frame 132c.

  As described above, the rising and moving apparatus according to the present embodiment is provided in the upper rotor 122 and abuts on one of the side frames 132a and 132b of the lower rotor 132 when the twist angle β is a specific value. Stoppers 1424 and 1425 are included as protrusions. Therefore, the relative positional relationship between the upper rotor 122 and the lower rotor 132 can be fixed using a simple structure. In the present embodiment, the structure of the upper rotor 122 and the structure of the lower rotor 132 may be reversed. That is, the upper rotor 122 may have a structure having two side frames and an arcuate frame, and the lower rotor 132 may have a structure having two stoppers. Further, the structure of the stopper and the structure of the portion where the stopper of the rotor abuts may be any.

  Further, the rising and moving apparatus of the present embodiment includes one magnet 1422 and another magnet 1423. One magnet 1422 and the other magnet 1423 are configured such that the portions having opposite polarities face each other so that one of the stoppers 1424 and 1425 contacts the upper rotor 122 or the lower rotor 132. It is attached to 132 separately. Therefore, since the above-described mechanical interaction can be generated without causing physical contact or deformation, energy loss when the above-described mechanism performs its function can be reduced.

  However, at the timing when the control circuit 150 performs control to reduce the difference between the rotation angle of the upper rotor 122 and the rotation angle of the lower rotor 132, the rotation angle of the upper rotor 122 and the rotation angle of the lower rotor 132 are The magnitude of the magnetic force generated between the one magnet 1422 and the other magnet 1423 is set so that the difference between them can be reduced.

<Embodiment 3>
Next, the rising and moving apparatus according to the embodiment of the present invention will be described with reference to FIG.

  The constituent elements other than the mechanical interaction generating mechanism of the rising and moving apparatus of the present embodiment are the same as those of the rising and moving apparatus of the first embodiment. Only the example will be described. In the present embodiment, for the sake of simplicity of explanation, the same numbers are assigned to the same components as those in Embodiment 1, and the description thereof will not be repeated unless particularly necessary.

(Mechanical interaction generation mechanism)
<Configuration>
As shown in FIG. 51, the upper rotor 122 is provided with a magnet 1426. On the other hand, iron pieces 1427 and 1428 are provided on the lower rotor 132 at a predetermined distance. Also in the present embodiment, the torsion angle β is fixed to a desired value at each time of launching and downing. Therefore, the positional relationship between the magnet 1426 and the iron pieces 1427 and 1428 is set at a position that realizes the above-described specific value of the twist angle β.

<Principle>
When the magnet 1426 and the iron pieces 1427 and 1428 face each other, the upper rotor 122 and the lower rotor 132 are in a stable state by the attractive force generated between the magnet 1426 and the iron pieces 1427 and 1428, respectively.

  That is, when the specific value of the twist angle β is not realized, an attractive force is generated between the magnet 1426 and each of the iron pieces 1427 and 1428 so that the specific value of the twist angle β is realized. .

  However, at the timing when the control circuit 150 performs control to reduce the difference between the rotation angle of the upper rotor 122 and the rotation angle of the lower rotor 132, the rotation angle of the upper rotor 122 and the rotation angle of the lower rotor 132 are The magnitude of the attractive force generated between the aforementioned magnet 1426 and each of the iron pieces 1427 and 1428 is set so that the difference between them can be reduced.

  For this reason, the stable state similar to the two stable states described in the first embodiment can also be realized by the mechanical interaction generating mechanism of the rising and moving apparatus of the present embodiment. Further, by using the magnet 1426 and the iron pieces 1427 and 1428, a mechanical interaction generating mechanism can be realized without energy loss such as frictional force. Further, since a mechanical interaction generating mechanism can be realized without any sliding portion, wear and fatigue failure do not occur even when a high-frequency operation such as flapping motion is performed.

  As described above, the rising and moving apparatus of the present embodiment includes the magnet 1426 and the iron pieces 1427 and 1428 as examples of the magnetic body. Magnets 1426 and iron pieces 1427 and 1428 as magnetic bodies are attached separately to upper rotor 122 and lower rotor 132 so as to face each other when twist angle β has a specific value. Therefore, since the above-described mechanical interaction can be generated without causing physical contact or deformation, energy loss due to the function of the above-described mechanism can be reduced to zero.

  Instead of the iron pieces 1427 and 1428 as magnetic bodies, another magnet may be provided in the lower rotor 132 such that a portion of the magnet 1426 having a polarity opposite to the N-pole or S-pole faces the magnet 1426. . Also in the present embodiment, the structure of the upper rotor 122 and the structure of the lower rotor 132 can be exchanged. That is, the upper rotor 122 is provided with two magnetic bodies or two magnets at a predetermined distance, and the lower rotor 132 is provided with a magnet that generates an attractive force between the two magnetic bodies or the two magnets. It may be.

<Embodiment 4>
Next, the rising and moving apparatus according to the embodiment of the present invention will be described with reference to FIG.

  Since components other than the mechanical coupling mechanism of the rising and moving apparatus of the present embodiment are the same as those of the rising and moving apparatus of the first embodiment, another example of the mechanical interaction generating mechanism will be described below. Only explained. In the present embodiment, for the sake of simplicity of explanation, the same numbers are assigned to the same components as those in Embodiment 1, and the description thereof will not be repeated unless particularly necessary.

(Mechanical interaction generation mechanism)
<Configuration>
As shown in FIG. 52, the arc-shaped peripheral surface of the upper rotor 122 and the arc-shaped peripheral surface of the lower rotor 132 are connected by a spring 1429. When the upper rotor 122 and the lower rotor 132 are positioned to achieve the aforementioned specific value of the twist angle β, the length of the spring 1429 is a natural length.

<Principle>
The upper rotor 122 and the lower rotor 132 are in a stable state when the length of the spring 1429 is a natural length. For this reason, a stable state similar to the two stable states described in each of the above-described embodiments can also be realized by the mechanical interaction generating mechanism of the rising and moving apparatus of the present embodiment. Further, when the specific value of the twist angle β is not realized, a tensile force or a compressive force is generated in the spring 1429 so that the specific value of the twist angle β is realized.

  More specifically, when the difference between the rotation angle of the upper rotor 122 and the rotation angle of the lower rotor 132 becomes larger than a desired value, the spring 1429 becomes longer than the natural tension, and the force to be contracted by the spring 1429. Occurs. On the other hand, if the difference between the rotation angle of the upper rotor 122 and the rotation angle of the lower rotor 132 becomes smaller than a desired value, the spring 1429 becomes shorter than the natural tension, and a force to stretch the spring 1429 is generated.

  Although the spring 1249 of this embodiment is a helical spring, other types of springs may be used as long as the object of the present invention can be achieved. Moreover, as long as the objective of this invention can be achieved, elastic bodies other than a spring may be used. That is, when the aforementioned specific value of the twist angle β is realized, the elastic body is not deformed and does not receive a force from the upper rotor 122 and the lower rotor 132, and the twist angle of the specific value described above. Any elastic body may be used as long as it is an elastic body that generates a force to achieve a specific value of twist angle β when β is not realized. Further, the elastic body may be connected to any position of the upper rotor 122 and the lower rotor 132 as long as it is connected to both the upper rotor 122 and the lower rotor 132.

  However, at the timing when the control circuit 150 performs control to reduce the difference between the rotation angle of the upper rotor 122 and the rotation angle of the lower rotor 132, the rotation angle of the upper rotor 122 and the rotation angle of the lower rotor 132 are The elastic constant of the elastic body described above is set so that the difference can be reduced.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

It is the schematic of the whole structure of the rising and moving apparatus of embodiment. It is the schematic of the detailed structure of the rising and moving apparatus of embodiment. It is a schematic plan view of the blade | wing part of the rising and moving apparatus of embodiment. It is a schematic side view of the blade | wing part of the rising and moving apparatus of embodiment. It is a figure which shows the 1st layer of the blade | wing part of the rising and moving apparatus of embodiment. It is a figure which shows the 2nd layer of the blade | wing part of the rising and moving apparatus of embodiment. It is a figure which shows the 3rd layer of the blade | wing part of the rising and moving apparatus of embodiment. It is an external view of the actuator used for the rising and moving apparatus of the embodiment. It is the schematic of the ultrasonic motor used for the rising and moving apparatus of embodiment. It is a figure which shows the 1st vibration mode of the ultrasonic motor used for the rising and moving apparatus of embodiment. It is a figure which shows the 2nd vibration mode of the ultrasonic motor used for the rising and moving apparatus of embodiment. It is explanatory drawing showing operation | movement of the ultrasonic motor used for the rising and moving apparatus of embodiment. It is explanatory drawing showing operation | movement of the ultrasonic motor used for the rising and moving apparatus of embodiment. It is the schematic of the preload mechanism of the ultrasonic motor used for the rising and moving apparatus of embodiment. It is the schematic of the drive mechanism part used for the rising and moving apparatus of embodiment. It is a figure which shows the 1st component of the drive mechanism part used for the rising and moving apparatus of embodiment. It is a figure which shows the 2nd component of the drive mechanism part used for the rising and moving apparatus of embodiment. It is a figure which shows the 3rd component of the drive mechanism part used for the rising and moving apparatus of embodiment. It is a figure which shows the definition of the size of the drive mechanism part used for the rising and moving apparatus of embodiment. It is a figure for demonstrating the drive principle of the drive mechanism part used for the rising and moving apparatus of embodiment. It is a figure for demonstrating how to flapping at the time of hovering of the rising and moving apparatus of embodiment. It is explanatory drawing showing how to flutter at the time of the rising of the rising and moving apparatus of embodiment. It is explanatory drawing showing how to flutter at the time of descent | fall of the rising and moving apparatus of embodiment. It is explanatory drawing showing the force of the horizontal direction which arises by the way of flapping at the time of the rising / falling of the rising and falling apparatus of embodiment. It is explanatory drawing showing the advance method of the rising and moving apparatus of embodiment. It is explanatory drawing showing the retreating method of the rising and moving apparatus of embodiment. It is explanatory drawing showing the way of flapping at the time of advance of the rising and moving apparatus of embodiment. It is explanatory drawing showing how to flutter at the time of reverse of the rising and moving apparatus of embodiment. It is a hardware block diagram of the control system in the rising and moving apparatus of an embodiment. It is a functional block diagram of the control system in the rising and moving apparatus of the embodiment. It is a figure for demonstrating the duty ratio of the PWM control signal of the rising and moving apparatus of embodiment. It is a graph which shows the duty ratio for control of center turning of the rising and moving apparatus of an embodiment. It is a graph which shows the duty ratio for control of the advance switching of the rising and moving apparatus of an embodiment. It is a graph which shows the duty ratio for control of delay switching of the rising and moving apparatus of an embodiment. It is a flowchart which shows the flow of control of the rising and moving apparatus of embodiment. It is a figure for demonstrating how to flap a general hovering. It is a graph showing the drive mode of the drive mechanism of the rising and moving apparatus of embodiment. It is the schematic which shows the behavior of the blade | wing part of the rising and moving apparatus of embodiment. It is a graph which shows the torque requested | required of each of the upper and lower ultrasonic motor of the rising and moving apparatus of embodiment. It is the schematic which shows the external appearance of the mechanical interaction generation mechanism of 1st embodiment. It is a figure of the 1st state when the main component of the mechanical interaction generation mechanism of 1st embodiment is seen from the side. It is a figure of the 2nd state when the main component of the mechanical interaction generation mechanism of 1st embodiment is seen from the side. It is a disassembled perspective view of the main components of the mechanical interaction generation mechanism of 1st embodiment. It is the schematic which shows the behavior of the mechanical interaction generation mechanism of 1st embodiment. It is a figure for demonstrating the principle of operation of the mechanical interaction generation mechanism of 1st embodiment. It is a graph showing the horizontal component of the mechanical interaction produced by the mechanical interaction generation mechanism of 1st embodiment. It is a graph which shows the required torque smoothed by using the mechanical interaction generation mechanism of 1st embodiment. It is the schematic which shows the modification of the shape of the groove part of the mechanical interaction generation mechanism of 1st embodiment. It is the schematic which shows the main structures of the mechanical interaction generation mechanism of 2nd embodiment. It is a perspective view of the main components of the mechanical interaction generation mechanism of 2nd embodiment. It is the schematic which shows the main structures of the mechanical interaction generation mechanism of 3rd embodiment. It is the schematic which shows the main structures of the mechanical interaction generation mechanism of 4th embodiment. It is a graph showing the behavior of the twist angle of the conventional drive mechanism. It is a graph which shows the relationship between the attack angle of a blade | wing part, and each of a lift coefficient and a drag coefficient.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 100 Levitation movement apparatus, 101 Main body, 110 Blade part, 120 Upper ultrasonic motor, 130 Lower ultrasonic motor, 140 Drive mechanism part, 150 Control circuit, 160 Position sensor, 170 Communication apparatus, 180 Image sensor, 190 Power supply, 122 Upper part Rotor, 132 Lower rotor, 1221 First upper rotor groove, 1222 Second upper rotor groove, 1321 First lower rotor groove, 1322 Second lower rotor groove, 1421 Sphere or truncated cone, 1422, 1423 magnet , 1424, 2425 stopper, 1426 magnet, 1427 magnetic body, spring 1429.

Claims (10)

A wing that flutters,
A drive mechanism for transmitting drive force to the blades;
An upper rotor that rotates and reciprocates within a predetermined angle range so that the drive mechanism is connected, and the front edge of the blade part reciprocates in the front-rear direction;
A lower rotor that rotates and reciprocates within a specific range so as to twist the blade portion around the front edge at a timing including the end of the reciprocating motion in the front-rear direction to which the driving mechanism is connected;
A mechanism for causing the upper rotor and the lower rotor to generate a mechanical interaction in which the potential energy is a minimum value when the twist angle around the front edge of the blade portion is a specific value; A rising and moving device provided. The upper rotor includes an upper concave portion on a surface facing the lower rotor,
The lower rotor includes a lower concave portion on a surface facing the upper rotor,
When the mechanism is reciprocated so as to draw an arcuate trajectory while being sandwiched between the upper rotor and the lower rotor, the upper recess and The rising and moving apparatus according to claim 1, comprising a spherical body or a conical body fitted in both of the lower concave portions. The mechanism is
Protrusions that are provided on one of the upper rotor and the lower rotor and abut against the other of the upper rotor and the lower rotor when the twist angle has a specific value;
A magnet that is separately attached to the upper rotor and the lower rotor, and that generates repulsive forces so that portions having the same polarity face each other so that the protrusions abut against the other of the upper rotor and the lower rotor; The rising and moving apparatus according to claim 1, further comprising another magnet. The mechanism is
One magnet provided on one of the upper rotor and the lower rotor;
2. A magnetic body or another magnet that is provided on the other of the upper rotor and the lower rotor and receives an attractive force from the one magnet so that a twist angle of the front edge portion has a specific value. The rising and moving apparatus according to 1.   The mechanism includes an elastic body connected to each of the upper rotor and the lower rotor, and not receiving a force from the upper rotor and the lower rotor when the twist angle is the specific value. The rising and moving apparatus according to claim 1. A wing that flutters,
A drive mechanism for transmitting drive force to the blades;
An upper rotor having an upper concave portion on a lower surface, connected to the drive mechanism portion, and rotating and reciprocating within a predetermined angle range so as to cause the front edge portion of the blade portion to reciprocate in the front-rear direction;
A lower recess is formed on the upper surface, the drive mechanism is connected, and reciprocates within a specific range so that the blade is twisted around the front edge at the timing including the end of the reciprocating motion in the front-rear direction. A moving lower rotor,
When reciprocating so as to draw an arc-shaped trajectory in a state sandwiched between the upper rotor and the lower rotor, and the twist angle around the front edge of the blade is a specific value A rising and moving apparatus comprising a spherical body or a conical body fitted into the upper concave portion and the lower concave portion. A wing that flutters,
A drive mechanism for transmitting drive force to the blades;
An upper rotor that rotates and reciprocates within a predetermined angle range so that the drive mechanism is connected, and the front edge of the blade part reciprocates in the front-rear direction;
A lower rotor that rotates and reciprocates within a specific range so as to twist the blade portion around the front edge at a timing including the end of the reciprocating motion in the front-rear direction to which the driving mechanism is connected;
Projecting from one of the upper rotor and the lower rotor toward the other of the upper rotor and the lower rotor, and when the twist angle has a specific value, the upper rotor and the lower rotor A protrusion in contact with the other,
A magnet that is separately attached to the upper rotor and the lower rotor, and that generates repulsive forces so that the portions having the same polarity face each other so that the protrusion abuts the other of the upper rotor and the lower rotor; A rising and moving apparatus comprising another magnet. A wing that flutters,
A drive mechanism for transmitting drive force to the blades;
An upper rotor that rotates and reciprocates within a predetermined angle range so that the drive mechanism is connected, and the front edge of the blade part reciprocates in the front-rear direction;
A lower rotor that rotates and reciprocates within a specific range so as to twist the blade portion around the front edge at a timing including the end of the reciprocating motion in the front-rear direction to which the driving mechanism is connected;
One magnet attached to one of the upper rotor and the lower rotor;
A magnetic body or other magnet that is attached to the other of the upper rotor and the lower rotor and receives an attractive force from the one magnet so that a twist angle around the front edge of the blade portion has a specific value A rising and moving device comprising: A wing that flutters,
A drive mechanism for transmitting drive force to the blades;
An upper rotor that rotates and reciprocates within a predetermined angle range so that the drive mechanism is connected, and the front edge of the blade part reciprocates in the front-rear direction;
A lower rotor that rotates and reciprocates within a specific range so as to twist the blade portion around the front edge at a timing including the end of the reciprocating motion in the front-rear direction to which the driving mechanism is connected;
Elasticity that is connected to each of the upper rotor and the lower rotor and receives no force from the upper rotor and the lower rotor when the twist angle around the front edge of the blade portion has a specific value A rising and moving device comprising a body. A wing that flutters,
A drive mechanism for transmitting drive force to the blades;
An upper rotor that rotates and reciprocates within a predetermined angle range so that the drive mechanism is connected, and the front edge of the blade part reciprocates in the front-rear direction;
A lower rotor that rotates and reciprocates within a specific range so as to twist the blade portion around the front edge at a timing including the end of the reciprocating motion in the front-rear direction to which the driving mechanism is connected;
The upper rotor and the upper rotor and the lower rotor so that the difference between the phase of the upper rotor and the phase of the lower rotor is maintained constant at a timing at which the twist angle around the front edge of the blade portion should be maintained constant. A rising and moving apparatus comprising: a mechanism for causing a mechanical interaction in the lower rotor.

Images