CN209617466U - A kind of patch type piezoelectric driving rotor flight device - Google Patents
A kind of patch type piezoelectric driving rotor flight device Download PDFInfo
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- CN209617466U CN209617466U CN201821862555.7U CN201821862555U CN209617466U CN 209617466 U CN209617466 U CN 209617466U CN 201821862555 U CN201821862555 U CN 201821862555U CN 209617466 U CN209617466 U CN 209617466U
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- 235000014676 Phragmites communis Nutrition 0.000 claims abstract description 25
- 239000000919 ceramic Substances 0.000 claims abstract description 18
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- 230000033001 locomotion Effects 0.000 abstract description 5
- 230000005284 excitation Effects 0.000 abstract description 4
- 230000009471 action Effects 0.000 abstract description 3
- 244000089486 Phragmites australis subsp australis Species 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 description 8
- 238000005452 bending Methods 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- 230000034994 death Effects 0.000 description 1
- 231100000517 death Toxicity 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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- General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
Abstract
The utility model discloses a kind of patch type piezoelectrics to drive rotor flight device, including a propeller, a rotor mechanism and a patch type piezoelectric actuator.Patch type piezoelectric actuator is variable cross-section bar type structure, is made of the cross-section rectangular beam and variable cross-section cylindrical bar that post piezoelectric ceramic piece.Wherein, four piezoelectric ceramic pieces are respectively adhered on four surfaces of cross-section rectangular beam.Rotor mechanism is mounted in the drive surface of variable cross-section cylindrical bar of patch type piezoelectric actuator by several reeds by certain precompression, and propeller is fixed on rotor mechanism.The utility model has dephased electric signal by excitation two-phase, excitation patch type piezoelectric actuator generates the orthogonal second order mode of flexural vibration of two-phase and intercouples, so that drive surface is generated whole class circle rotary motion, and rotor mechanism and propeller rotational are driven by rubbing action.The utility model overall structure flexible compact, is easy to be miniaturized.
Description
Technical field
The utility model relates to a kind of patch type piezoelectrics to drive rotor flight device, belong to piezoelectric actuating technical field.
Background technique
UAV abbreviation unmanned plane, be it is a kind of controlled by radio robot, or by being preprogramed manipulation
Non- manned vehicle.Due to having the characteristics that zero injures and deaths, using limitation less, good concealment, efficiency-cost ratio it is high, before wide application
Scape.Investigation tasks are executed in order to more snugly penetrate into the narrow spaces such as room, pipeline and cave, it is desirable that aircraft size
Smaller, weight is lighter, this concept of micro air vehicle is just come into being, and is further developed towards the trend of micromation.
Piezoelectric Driving itself has the characteristics that small in size, light weight, response are rapid, compact-sized, good without electromagnetic interference etc., well
Requirement of the micro air vehicle for actuator in MEMS (MEMS) is met.The two is combined into rear rotor craft
Structure can be more compact and be further simplified, and can obtain bigger lift weight ratio, to complete more diverse aerial mission
There is provided may.
Summary of the invention
Goal of the invention: being directed to the above-mentioned prior art, proposes a kind of patch type piezoelectric driving rotor flight device, piezoelectricity is driven
It moves in conjunction with rotor craft.
Technical solution: a kind of patch type piezoelectric driving rotor flight device, including propeller, rotor mechanism and patch type pressure
Motor-driven cylinder；The patch type piezoelectric actuator is by bar of variable cross-section and four piezoelectric ceramic pieces being arranged on bar of variable cross-section surface
It constitutes；The bar of variable cross-section includes the cross-section rectangular beam and superposed variable cross-section cylindrical bar two parts positioned at lower part, institute
State four surfaces that four piezoelectric ceramic pieces are respectively adhered on the cross-section rectangular beam；The rotor mechanism includes being provided with idol
Several cylinder rings for being circumferentially uniformly distributed eccentric grove, even number rectangle reed corresponding with the eccentric grove and elasticity
Circle；One end of the rectangle reed is provided with card slot, and the other end passes through eccentric grove and the variable cross-section on the cylinder ring
The driving face contact of cylindrical bar；The elastic ring is socketed on the outside of each rectangle reed, is fixed on the rectangle reed
Card slot at, apply the precompression between the rotor mechanism and patch type piezoelectric actuator；The propeller is fixed on described
Cylinder ring upper end.
Further, the polarization type of four piezoelectric ceramic pieces is identical, polarizes in thickness direction；Wherein, own
Piezoelectric ceramic piece is divided into two groups according to the stickup direction on four surfaces in the cross-section rectangular beam, is located at unidirectional two
The polarization direction of piece piezoelectric ceramic piece is identical.
Further, variable cross-section cylindrical bar part has the concave cylindrical structure of two continuous variable cross sections, and diameter is most
The excircle of small concave cylindrical structure is the drive surface.
Further, the fluting direction of the eccentric grove on the cylinder ring is unified amesiality.
The utility model has the advantages that the utility model design patch type piezoelectric driving rotor flight device it is compact-sized, be easy to clamping,
Noise is small, energy electromagnetism interference, wherein the piezoelectric actuator structure type simple and flexible of patch type, micromation easy to accomplish.Make
Very high lift weight ratio can be obtained for a kind of rotor driver itself.
Detailed description of the invention
Fig. 1 is the schematic three dimensional views of the utility model patch type piezoelectric driving rotor flight device；
Fig. 2 is the structural schematic diagram of the utility model patch type piezoelectric driving rotor flight device；
Fig. 3 is rotor mechanism structural schematic diagram；
Fig. 4 is patch type piezoelectric actuator configurations side view；
Fig. 5 is the polarized structural schematic diagram of piezoelectric ceramic piece；
Fig. 6 is the piezoelectric actuator working state schematic representation of patch type；
Fig. 7 is the movement locus schematic diagram of rotor mechanism outer surface particle.
Specific embodiment
Further explanation is done to the utility model with reference to the accompanying drawing.
As shown in Figure 1 to Figure 3, a kind of patch type piezoelectric drives rotor flight device, including propeller 1,2 and of rotor mechanism
Patch type piezoelectric actuator 3.
Patch type piezoelectric actuator 3 is by bar of variable cross-section 3-1 and four piezoelectric ceramics being arranged on the surface bar of variable cross-section 3-1
Piece 3-2 is constituted.Bar of variable cross-section 3-1 includes the cross-section rectangular beam and superposed variable cross-section cylindrical bar two positioned at lower part
Point, four piezoelectric ceramic piece 3-2 pass through four surfaces that epoxide-resin glue is symmetrically pasted onto cross-section rectangular beam respectively.Four
The polarization type of piezoelectric ceramic piece 3-2 is identical, polarizes in thickness direction；Wherein, all piezoelectric ceramic piece 3-2 according to wait cut
The stickup direction on four surfaces of face rectangular beam is divided into two groups, positioned at the polarization side of unidirectional two panels piezoelectric ceramic piece 3-2
To identical, as shown in Figure 5.Variable cross-section cylindrical bar part has the concave cylindrical structure of two continuous variable cross sections, and diameter is the smallest
The excircle of concave cylindrical structure is drive surface.
Rotor mechanism 2 includes the cylinder ring 2-1, corresponding with eccentric grove for being provided with even number and being circumferentially uniformly distributed eccentric grove
Even number rectangle reed 2-2 and elastic ring 2-3, the fluting direction of the eccentric grove on cylinder ring 2-1 is unified amesiality.
One end of rectangle reed 2-2 is provided with card slot, and the other end passes through the drive of eccentric grove and variable cross-section cylindrical bar on cylinder ring 2-1
Dynamic face contact.Elastic ring 2-3 is socketed on the outside of each rectangle reed 2-2, is fixed at the card slot of rectangle reed 2-2, is applied
Precompression between rotor mechanism 2 and patch type piezoelectric actuator 3.
Propeller 1 is provided with a through-hole, and aperture is identical as cylinder ring 2-2 inner hole, is fixed on the upper end of cylinder ring 2-1.
The telecommunications that two-phase has pi/2 phase difference is applied respectively to two groups of potsherd 3-2 in patch type piezoelectric actuator 3
Number, so that patch type piezoelectric actuator 3 inspires the orthogonal second order flexural vibration mode of two-phase simultaneously.With the first of application
Electric signal is sinusoidal signal, for the second electric signal is cosine signal, in order to obtain the vibration shape being consistent with designed structure, is swashed
The vibration encouraged all is second order bending vibration.It is research object with individual patch type piezoelectric actuator 3, two orthogonal second order bending vibrations
Intermediate node is located at the intermediate setting of bar of variable cross-section 3-1, can be used for clamping entire piezoelectric actuator；Two groups of piezoelectric ceramic pieces it is viscous
Patch position is located at first peak swing position of the second order bending vibration of the patch type piezoelectric actuator respectively inspired；Concave
The smallest cylinder drive surface of variable cross-section cylindrical bar is located at second peak swing position of the second order bending vibration of patch type piezoelectric actuator
It sets, as shown in Figure 6.When the two second order bending vibration modes inspired in patch type piezoelectric actuator intercouple, concave, which becomes, to be cut
Face round bar will circumferentially do class circumgyration campaign, and therefore, in a cycle T, all particles of drive surface will do ellipse
Movement, when T ∈ (0, T/4), drive surface is simultaneously to both horizontally and vertically extending, the horizontal displacement components of particle and vertical position
Move component positive increase simultaneously；As T ∈ (T/4, T/2), the vertical displacement components that excitation sinusoidal signal generates drive surface are just
To increase, the horizontal displacement components negative sense that cosine signal generates drive surface increases；As T ∈ (T/2,3T/4), driving towards
Horizontal and vertical directions shortens simultaneously, and negative sense increases the horizontal displacement components and vertical displacement components of particle simultaneously；As T ∈
When (3T/4, T), the vertical displacement components negative sense that excitation cosine signal generates drive surface increases, and sinusoidal signal produces drive surface
Raw horizontal displacement components forward direction increases, and the particle on the inner surface of 3 drive surface of patch type piezoelectric actuator is in one cycle
Displacement component be superimposed as elliptical orbit.
Under installation condition, gapless between 3 drive surface of each reed 2-2 and patch type piezoelectric actuator.Patch type piezoelectric
When the driving surface vibration of actuator 3, the power for acting on side reed 2-2 is outward released, the reed 2-2 and patch of the other side
3 drive surface of plate piezoelectric actuator in the horizontal direction between there is gap, will by elastic ring 2-3 to the precompression of reed 2-2
The reed 2-2 of the other side pushes the drive surface of patch type piezoelectric actuator 3 to, is still kept in contact.The outer surface of drive surface and eight
The practical contact of a reed 2-2 is still a circle, i.e. contact circle, contacts round radius by 3 drive surface of patch type piezoelectric actuator
Elliptic motion amplitude and reed 2-2 rigidity determine, as shown in Figure 7.The ideal vibration shape be in the case where certain precompression,
3 drive surface of patch type piezoelectric actuator generates whole class circle rotary motion, and reed 2-2 is basically unchanged shape, exists as much as possible
It is moved under rubbing action using whole driven in translation reed, so that entire rotor mechanism rotation, to realize that propeller rotates.
However, reed 2-2 is elastomer, under the effect of piezoelectric actuator 3, other than generating along the integral translation of slot, office is also had
Portion's deformation；And reed and bar of variable cross-section be under rubbing action when relative rotation, as flexible deformation and produce relative sliding.
The target of design is under the premise of overall volume and quality small as far as possible, and the amplitude in piezoelectric actuator ultra-precision driving face is big as far as possible, and makes
The flexible deformation of reed itself is as small as possible.When designing specific outer dimension, mode point is carried out by finite element emulation software
Analysis, and parametric adjustment is carried out to size.The fluting direction of eccentric grove is unified amesiality, when the phase for changing two-phase pumping signal
Potential difference, propeller can realize reverse rotation.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the protection scope of the utility model.
Claims (4)
1. a kind of patch type piezoelectric drives rotor flight device, it is characterised in that: including propeller (1), rotor mechanism (2) and patch
Plate piezoelectric actuator (3)；The patch type piezoelectric actuator (3) is by bar of variable cross-section (3-1) and is arranged at bar of variable cross-section (3-1)
Four piezoelectric ceramic pieces (3-2) on surface are constituted；The bar of variable cross-section (3-1) include positioned at lower part cross-section rectangular beam and
Superposed variable cross-section cylindrical bar two parts, four piezoelectric ceramic pieces (3-2) are respectively adhered on the cross-section rectangle
Four surfaces of beam；The rotor mechanism (2) includes the cylinder ring (2- for being provided with even number and being circumferentially uniformly distributed eccentric grove
1), even number rectangle reed (2-2) corresponding with the eccentric grove and elastic ring (2-3)；The rectangle reed (2-2)
One end be provided with card slot, the other end passes through the driving of eccentric grove and the variable cross-section cylindrical bar on the cylinder ring (2-1)
Face contact；The elastic ring (2-3) is socketed on the outside of each rectangle reed (2-2), is fixed on the rectangle reed (2-
2) at card slot, apply the precompression between the rotor mechanism (2) and patch type piezoelectric actuator (3)；The propeller (1)
It is fixed on the upper end the cylinder ring (2-1).
2. patch type piezoelectric according to claim 1 drives rotor flight device, it is characterised in that: the four piezoelectricity pottery
The polarization type of tile (3-2) is identical, polarizes in thickness direction；Wherein, all piezoelectric ceramic pieces (3-2) are according to described etc.
The stickup direction on four surfaces of section rectangular beam is divided into two groups, is located at the pole of unidirectional two panels piezoelectric ceramic piece (3-2)
It is identical to change direction.
3. patch type piezoelectric according to claim 1 or 2 drives rotor flight device, it is characterised in that: the variable cross-section
Cylindrical bar part has the concave cylindrical structure of two continuous variable cross sections, and the excircle of the smallest concave cylindrical structure of diameter is institute
State drive surface.
4. patch type piezoelectric according to claim 1 or 2 drives rotor flight device, it is characterised in that: the cylinder ring
The fluting direction of eccentric grove on (2-1) is unified amesiality.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821862555.7U CN209617466U (en) | 2018-11-13 | 2018-11-13 | A kind of patch type piezoelectric driving rotor flight device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821862555.7U CN209617466U (en) | 2018-11-13 | 2018-11-13 | A kind of patch type piezoelectric driving rotor flight device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109398685A (en) * | 2018-11-13 | 2019-03-01 | 南京航空航天大学 | A kind of patch type piezoelectric driving rotor flight device |
| CN112290823A (en) * | 2020-09-14 | 2021-01-29 | 南京航空航天大学 | Linear piezoelectric actuator based on spiral clamping structure and working method thereof |
| CN112389616A (en) * | 2020-10-26 | 2021-02-23 | 南京航空航天大学 | Piezoelectric-driven underwater propeller vector propulsion system and working method thereof |
-
2018
- 2018-11-13 CN CN201821862555.7U patent/CN209617466U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109398685A (en) * | 2018-11-13 | 2019-03-01 | 南京航空航天大学 | A kind of patch type piezoelectric driving rotor flight device |
| CN109398685B (en) * | 2018-11-13 | 2024-05-28 | 南京航空航天大学 | Patch type piezoelectric driving rotor wing flying device |
| CN112290823A (en) * | 2020-09-14 | 2021-01-29 | 南京航空航天大学 | Linear piezoelectric actuator based on spiral clamping structure and working method thereof |
| CN112389616A (en) * | 2020-10-26 | 2021-02-23 | 南京航空航天大学 | Piezoelectric-driven underwater propeller vector propulsion system and working method thereof |
| CN112389616B (en) * | 2020-10-26 | 2021-10-15 | 南京航空航天大学 | Piezoelectric-driven underwater propeller vector propulsion system and working method thereof |
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