WO2006080134A1 - 装着式動作補助装置及び制御用プログラム - Google Patents
装着式動作補助装置及び制御用プログラム Download PDFInfo
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- WO2006080134A1 WO2006080134A1 PCT/JP2005/021472 JP2005021472W WO2006080134A1 WO 2006080134 A1 WO2006080134 A1 WO 2006080134A1 JP 2005021472 W JP2005021472 W JP 2005021472W WO 2006080134 A1 WO2006080134 A1 WO 2006080134A1
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- wearer
- joint
- torque
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- frame
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Classifications
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- A61H2230/605—Muscle strain, i.e. measured on the user, e.g. Electromyography [EMG] used as a control parameter for the apparatus
Definitions
- the present invention relates to a wearable movement assist device, and more particularly to an improvement in a wearable motion assist device that assists or substitutes for a wearer's movement and a control program.
- motion assist devices worn by users
- This type of motion assisting device includes a myoelectric potential sensor (biological signal detection means) that detects a myoelectric potential signal associated with the wearer's muscle activity, a joint angle detection means that detects angular displacement of each joint of the wearer,
- a device including a drive source such as a drive motor that applies torque as an assisting force to the wearer and a control unit that controls the drive source is being developed (for example, Non-Patent Document 1).
- control means appropriately controls the drive motor based on the detection result by the myoelectric potential sensor and the detection result by the joint angle detection means, so that it is suitable for the wearer's intention and suitable for the current operation. Torque can be applied to the wearer, and this is expected to be realized.
- the initial setting is performed by the wearer for the first time.
- the kinetic parameters of the power assist device itself such as weight, inertia moment and viscosity coefficient, are known values
- the wearer's kinetic parameters are unknown values due to fluctuation factors such as individual differences. Therefore, the torque as the assist force is generated based on the dynamic parameters at the initial setting, and there is a possibility that a sufficient effect cannot be obtained depending on the wearer.
- the present invention provides a wearable motion assisting device and a control capable of exhibiting an effect according to a control method regardless of a variation factor such as individual differences and physical condition of the wearer. It is an object to provide a program for use. Means for solving the problem
- the present invention has the following means in order to solve the above problems.
- the invention according to claim 1 provides a biological signal detection means for detecting a biological signal from the wearer and a torque that acts on the wearer with each joint of the wearer acting as a rotation shaft.
- a wearable motion assisting device having a motion assisting wearing device having a power source and a control means for controlling the drive source so as to generate a torque according to the biological signal detected by the biological signal detecting means;
- Drive torque estimation for estimating the drive torque generated by the drive source.
- Determining means joint angle detecting means for detecting the angular displacement of the joint, driving torque estimated by the driving torque estimating means and angular displacement detected by the joint angle detecting means
- Parameter identification means for identifying the dynamic parameter by substituting it into the equation of motion of the entire system including the control means, wherein the control means substitutes the dynamic parameter identified by the parameter identification means.
- the drive source is controlled according to a predetermined control method based on the equation.
- the invention according to claim 2 has a biological signal detection means for detecting a biological signal from the wearer, and a drive source for applying torque acting on the wearer's joint as a rotation axis to the wearer.
- a wearable motion assisting device having the motion assisting wearing device and a control means for controlling the drive source so as to generate a torque corresponding to the biological signal detected by the biological signal detecting means;
- a driving torque estimating means for estimating a driving torque generated by the driving source; a joint angle detecting means for detecting an angular displacement of the joint; and a driving torque generated by the driving source and a muscular torque due to a wearer's muscular strength.
- Muscle torque estimation means for estimating the generated muscle torque or muscle force, the drive torque estimated by the drive torque estimation means, the angular displacement detected by the joint angle detection means, and the muscle torque estimation means
- Parameter identification means for identifying the dynamic parameters by substituting the muscle torque into an equation of motion for the entire system including the dynamic parameters specific to the wearer
- the control means includes the parameter identification means
- the drive source is controlled in accordance with a predetermined control method based on the equation of motion substituted with the dynamic parameter identified by the above.
- the invention according to claim 3 is that the correspondence between the biological signal detected by the biological signal detection means and the muscle torque or muscle strength estimated by the muscle torque estimation means is preset. Thus, it is further characterized by further comprising a calibration means for adjusting the gain between the two.
- the invention according to claim 4 is characterized in that the biological signal detection means is attached to the skin of the wearer. It is characterized in that the myoelectric potential of the wearer is detected as the biological signal.
- the invention according to claim 5 is characterized in that the motion assisting wearing device is provided with a waist belt, a right leg assisting portion provided downward from a right side portion of the waist belt, and a lower portion from the left side portion of the waist belt.
- a left leg auxiliary part, the right leg auxiliary part and the left leg auxiliary part extending downward to support the waist belt, and below the first frame.
- a second frame extending to the second frame, a third frame extending downward from the second frame, and a fourth frame provided at the lower end of the third frame on which the back of the wearer's legs is placed.
- a first joint interposed between a lower end of the first frame and an upper end of the second frame; a second joint interposed between a lower end of the second frame and an upper end of the third frame; It is characterized by having.
- the first joint is provided at a height position coinciding with the hip joint of the wearer, and the driving force is transmitted so as to rotate the second frame.
- a drive source and first joint angle detection means for detecting angular displacement of the wearer's hip joint, wherein the second joint is provided at a height position matching the knee joint of the wearer;
- a second drive source for transmitting a drive force so as to rotate the third frame, and a second joint angle detection means for detecting an angular displacement of the knee joint of the wearer.
- control means follows a control method that performs at least one of gravity compensation and inertia compensation using the dynamic parameters identified by the parameter identification means.
- control means follows an impedance control method using dynamic parameters identified by the parameter identification means.
- the invention according to claim 9 is a control program that causes a computer as the control means to execute the control method according to claim 7.
- An invention according to claim 10 is a control program characterized by causing a computer as the control means to execute the control method according to claim 8.
- the wearer's unique dynamics parameter when worn by the wearer Since the parameters can be identified by the parameter identification means, and the drive source can be controlled by the control means based on the equation of motion substituted with the identified kinetic parameters, regardless of the individual factors of the wearer, fluctuation factors such as physical condition, The effect according to the control method used by the control means can be exhibited.
- the drive source can be controlled by the control means based on the equation of motion in which the muscle torque or the muscle force estimated by the muscle torque estimation means is also substituted.
- the dynamic parameters can be identified even in a state where the wear occurs, and the above-described effect can be exhibited without requiring the wearer to wait for the dynamic parameters to be identified.
- the correspondence between the biological signal detected by the biological signal detecting means and the muscle torque or strength detected by the muscle torque estimating means is set in advance. Since the calibration means for adjusting the gain between the two is further provided, it is possible to prevent a situation in which poor sensitivity or excessive sensitivity occurs in the detection result from the biological signal detection means. As a result, it is possible to prevent a situation in which the identification accuracy of the wearer's dynamic parameters is lowered, and to prevent the assist force generated by the drive source from being too small or too large.
- the motion assisting device since the control means for performing at least one of gravity compensation and inertia compensation using the dynamic parameter identified by the parameter identification means is provided, the motion assisting device itself It is possible to suppress the situation where the weight of the wearer is a burden on the wearer and the situation where the inertia of the motion assisting device itself makes the wearer feel uncomfortable during operation.
- control means according to the impedance control method using the dynamic parameters identified by the parameter identification means since the control means according to the impedance control method using the dynamic parameters identified by the parameter identification means is provided, for example, the apparent inertia, viscosity, etc. can be reduced and lightened. When powerful operation is realized, it is possible to achieve effects specific to impedance control.
- FIG. 1 is a block diagram showing a control system of an embodiment of a wearable movement assist device according to the present invention.
- FIG. 2 Viewed from the front side of one embodiment of the wearable movement assist device according to the present invention.
- FIG. 3 is a rear perspective view of a state in which one embodiment of the wearing type movement assisting device according to the present invention is worn.
- FIG. 5 is a rear view of the motion assisting wearing tool 18.
- FIG. 6 is a flowchart for illustrating a procedure of control processing executed by control device 100.
- FIG. 7A This is a diagram showing each element of the mathematical model, and is a side view of the legs of the wearer 12 to which the movement assisting wearing device 18 is worn, also taking into account the side force.
- ⁇ 8A] is a diagram showing the effect of the assist force by the drive source 140 and the muscle strength of the wearer 12; the resultant force of the drive torque (Te) of the drive source 140 and the muscle torque (Tm) of the wearer 12 is the joint moment ( It is a systematic diagram which shows acting as (DELTA) T).
- ⁇ 8B is a diagram showing the effect of the assist force by the drive source 140 and the muscle strength of the wearer 12, schematically showing each torque that acts when the leg is rotated upward (or forward) around the knee joint FIG.
- FIG. 9A A diagram showing a parameter correction process executed when the motion assisting wearing tool 18 is worn by the wearer 12, and is a flowchart showing a procedure of the parameter identification process performed in the meter identification unit 160.
- ⁇ 9B is a diagram showing parameter correction processing executed when the motion assisting wearing device 18 is worn on the wearer 12, and shows the procedure of torque estimation processing for estimating the joint torque performed by the joint torque estimating means 152. It is a flowchart to show.
- FIG. 10A This is a graph showing the moment of inertia convergence pattern in experimental data of transient response of dynamic parameters including unknown parameters (Pu) when parameter identification processing is performed.
- FIG. 10B is a graph showing the convergence pattern of the gravitational moment in the experimental data of the transient response of the dynamic parameters including the unknown parameter (Pu) when the parameter identification process is performed.
- FIG. 10C A graph showing the convergence pattern of the viscosity coefficient in the experimental data of the transient response of the dynamic parameters including the unknown parameter (Pu) when the parameter identification process is performed.
- FIG. 11 is a chart showing experimental results when an identification experiment is performed under the same conditions for each of subjects A, B, and C as wearers 12.
- FIG. 12A Experimental data showing an example of identification accuracy by the parameter identification processing of the present embodiment.
- FIG. 12B Experimental data showing an example of identification accuracy by the parameter identification processing of this example.
- FIG. 13 is a flowchart showing a calibration procedure performed in a calibration unit 158.
- FIG. 14A is a graph showing a knee joint angle change without control (without assist).
- FIG. 14B is a graph showing myoelectric potential change without control (without assist).
- FIG. 14C is a graph showing changes in strain gauge output without control (without assist).
- FIG. 15A is a graph showing changes in assist knee joint angle by PD control.
- FIG. 15B is a graph showing changes in assist myoelectric potential by PD control.
- FIG. 15C is a graph showing changes in assist strain gauge output by PD control.
- FIG. 16A is a graph showing changes in assist knee joint angle by PD control + hybrid impedance control.
- FIG. 16B is a graph showing changes in assist myoelectric potential by PD control and hybrid impedance control.
- FIG. 16C is a graph showing changes in assist strain gauge output by PD control and hybrid impedance control.
- FIG. 1 is a block diagram showing a control system applied to an embodiment of a wearable motion assisting device that works according to the present invention.
- the motion assisting device 10 includes a drive source 140 that applies assist force to the wearer 12 and joint angle detection that detects angular displacement ⁇ of each joint of the wearer 12.
- the assist force here refers to the force that generates torque that acts on each joint (corresponding to each of the knee joint and hip joint of the wearer 12) in the motion assisting wearing device 18 (see FIGS. 2 and 3). It can also be called assist torque.
- the relative force detection means 146 detects a force acting on the frame of the motion assisting wearing device 18, that is, a force relatively determined by the relationship between the force generated by the drive source 140 and the muscle strength of the wearer 12. .
- the operation assisting device 10 includes a control device 100 that drives and controls the drive source 140 through the power amplification means 141.
- the control device 100 includes a drive torque estimation unit 150, a joint torque estimation unit 152, a muscle torque estimation unit 153, a data input unit 154, a data storage unit 156, a calibration unit 158, a parameter identification unit (parameter identification unit) 160, and a control unit. 200 and a data output unit 162 are provided.
- the drive torque estimation means 150 estimates the drive torque Te generated by the drive source 140. For example, the drive torque estimation means 150 detects a current value supplied to the drive source 140 and the current value is specific to the drive source 140. Apply the one that estimates the driving torque (Te) by multiplying the torque constant be able to.
- the joint torque estimating means 152 estimates the joint torque ( ⁇ T) around each joint of the wearer 12 according to the relative force ( ⁇ F) detected by the relative force detecting means 146.
- the muscle torque estimating means 153 is based on the driving torque (T e) estimated by the driving torque estimating means 150 and the joint torque ( ⁇ ⁇ ) estimated by the joint torque estimating means 152, Torque ( ⁇ Tm) is estimated (see FIG. 8A).
- the data input unit 154 serves as an input interface for detection data of various detection means in the motion assisting device 10 and estimation data from various estimation means.
- the data storage unit 156 stores data necessary for performing various arithmetic processes in the control device 100.
- the calibration unit 158 reads the myoelectric potential (EM G) and the muscle strength estimation value (F ′) from the data input unit 154 and the predetermined set gain (Gs) from the data storage unit 156, and outputs the myoelectric potential ( The gain between the two is adjustable so that the correspondence between EMG) and estimated muscle strength (F ') is the set gain (Gs).
- the parameter identification unit 160 configures the target equation of motion on the computing environment using the following equation of motion data (Mi) and the known parameter (Pk) read from the data storage unit 156, and The equation of drive torque estimated value (Te), joint torque estimated value ( ⁇ ), and joint angle ⁇ from the data input unit 154 can be substituted into the equation of motion.
- the nomometer identification unit 160 substitutes the data of the data input unit 154 force into the target motion equation to identify the dynamic parameters that are undetermined in the motion equation. It is possible.
- the control unit 200 includes control method data (Ci) described later from the data storage unit 156, a drive torque estimated value (Te), a joint torque estimated value ( ⁇ ⁇ ), and a joint angle ⁇ from the data input unit 154.
- the identification parameter (Pi) from the parameter identification unit 160 and the corrected myoelectric potential (EMG ′) from the calibration unit 158 can be read.
- the control unit 200 configures a predetermined control means on the computing environment using the control method data (Ci), and includes the drive torque estimated value (Te) and the joint torque estimation. By reflecting the value ( ⁇ ), the joint angle ⁇ , the identification parameter (Pi), and the myoelectric potential (EMG ′), it is possible to send a control signal Ur for controlling the driving source 140.
- the data output unit 162 sends the control signal Ur from the control unit 200 to the power amplification means 141. It becomes an output interface for doing.
- the power amplifying means 141 drives the drive source 140 in accordance with the control signal Ur from the data output unit 162.
- the calibration unit 158, the parameter identification unit 160, and the control unit 200 described above those configured on the central processing unit (CPU) can be applied, and are integrated on one CPU. If so, it is preferable for downsizing and reducing the number of parts.
- CPU central processing unit
- FIG. 2 is a perspective view of a state in which the embodiment of the wearing type movement assisting device according to the present invention is worn, with the front side force being viewed.
- FIG. 3 is a perspective view of the wearing type movement assisting device according to an embodiment of the present invention as seen from the rear side.
- the motion assisting device 10 is, for example, a person with lower limb movement dysfunction who is unable to walk due to a decrease in skeletal muscle strength, or a patient who performs rehabilitation of walking movement. It is a device that assists the walking of people who have difficulty walking on their own.
- This motion assisting device 10 detects a biological signal (surface myoelectric potential) generated when a muscle force is generated by a signal of brain power, and based on this detection signal, a driving source 140 (in this embodiment, an electric drive) It is operable to apply an assist force from a motor).
- a biological signal surface myoelectric potential
- a driving source 140 in this embodiment, an electric drive
- the motion assisting device 10 is completely different from a so-called playback robot configured to control a robot hand based on pre-input data, and is a robot suit or powered robot. Also called a suit.
- the assisting force corresponding to the biological signal generated at that time is applied from the motion assisting device 10, and the assist force and You can walk with your own strength. For example, if the assist force occupies half of the resultant force, the wearer 12 can operate with half of the required strength.
- the motion assisting device 10 is provided with a drive source 140 in the motion assisting mounting tool 18 to be worn by the wearer 12, and more specifically, the wearer 12 Right thigh drive motor 20 located at the right hip joint, left thigh drive motor 22 located at the left hip joint, right knee drive motor 24 located at the right knee joint, and left knee drive motor 26 located at the left knee joint. Each is provided.
- These drive motors 20, 22, 24, and 26 correspond to the drive source 140 described above. More specifically, these drive motors are servo motors whose drive torque is controlled by a command signal from the control device 100. There is a built-in speed reduction mechanism (not shown) that reduces the motor rotation at a predetermined speed reduction ratio.
- batteries 32 and 34 functioning as a power source for driving the drive motors 20, 22, 24, and 26 are attached to the waist belt 30 attached to the waist of the wearer 12.
- the batteries 32 and 34 are rechargeable batteries, which are distributed on the left and right so as not to interfere with the walking motion of the wearer 12.
- the control bag 36 to be worn on the back of the wearer 12 houses devices such as the power amplifying means 141, the control device 100, and a power supply circuit (not shown).
- the lower portion of the control back 36 is supported by the waist belt 30 and is attached so that the weight of the control back 36 does not become a burden on the wearer 12.
- the motion assisting device 10 includes a myoelectric sensor 38a, 38b for detecting a myoelectric potential (EMGhip) associated with the movement of the right thigh of the wearer 12, and a muscle associated with the movement of the left thigh of the wearer 12.
- Myoelectric sensors 40a and 40b that detect the potential (EMGhip) myoelectric sensors 42a and 42b that detect the myoelectric potential (EMGknee) that accompanies the movement of the right knee, and myoelectric potential (EMGknee) that accompanies the movement of the left knee
- a force is provided for detecting myoelectric potential sensors 44a and 44b.
- myoelectric potential sensors 38a, 38b, 40a, 4 Ob, 42a, 42b, 44a, 44b are equivalent to the above-described biological signal detecting means 144. More specifically, when the skeletal muscles generate muscle strength, It has an electrode (not shown) for detecting a weak potential generated in skeletal muscle. In this embodiment, each of the myoelectric potential sensors 38a, 38b, 40a, 40b, 42a, 42b, 44a, 44b is attached so as to be attached to the skin surface of the wearer 12 with an adhesive seal covering the circumference of the electrode. It is done.
- acetylcholine a synaptic transmitter
- EMG Electro MyoGram
- Muscles expand and contract when proteins called actin and myosin are supplied by blood, but muscle strength is generated when they contract. Therefore, in a joint where two bones are connected to each other so that they can rotate, the flexor that generates a force in the direction of bending the joint and the extensor that generates a force in the direction of extending the joint are between the two bones. It is mounted.
- the human body has several muscles that move the legs under low back strength, the iliopsoas muscles that raise the thighs forward, the gluteal muscles that lower the thighs, the quadriceps muscles that extend the knees, and the knees. There are biceps femoris.
- the above-described myoelectric potential sensors 38a and 40a are attached to the front side of the base of the thigh of the wearer 12 so that the surface myoelectric potential of the iliopsoas muscle can be detected and the leg is moved forward. It is possible to measure the myoelectric potential according to the muscle strength.
- the myoelectric potential sensors 38b and 40b are attached to the buttocks of the wearer 12 and can detect the surface myoelectric potential of the greater gluteus muscle, for example, depending on the muscle strength when kicking back or going up the stairs. EMG potential can be measured.
- the myoelectric potential sensors 42a and 44a are attached to the front side of the knee 12 of the wearer 12 so that the surface myoelectric potential of the quadriceps can be detected.
- Myoelectric potential can be measured.
- the myoelectric potential sensors 42b and 44b are attached to the back of the knee 12 of the wearer 12 so that the surface myoelectric potential of the biceps femoris can be detected. EMG potential can be measured.
- the operation assisting device 10 provided with the myoelectric potential sensors 38a, 38b, 40a, 40b, 42a, 42b, 44a, 44 as described above, the iliopsoas muscle, the gluteal muscle, the quadriceps and the thigh
- the myoelectric potential corresponding to the activity of the biceps muscle can be detected, and the driving motors 20, 2 2, 24, 26 are driven by the driving current corresponding to the myoelectric potential, so that it conforms to the discretion of the wearer 12 It is possible to apply the assist force.
- the motion assisting device 10 detects a torque sensor 45 that detects torque acting around the hip joint of the wearer 12 in the motion assisting wearing device 18, and torque acting around the knee joint of the wearer 12.
- a force sensor 46 (which corresponds to the above-mentioned relative force detection means 146) is provided.
- the force sensors 45 and 46 detect strain corresponding to the applied force, and also have a strain gauge force that outputs an electric signal proportional to the magnitude of the generated strain. And the left leg.
- the force sensor 45 is provided at a position for detecting distortion of a portion that causes stagnation due to the drive torque of the drive motors 20 and 22 in the second frame 58 corresponding to the thigh of the wearer 12.
- the force sensor 46 is provided at a position for detecting distortion of a portion that is bent by the drive torque of the drive motors 24 and 26 in the third frame 60 corresponding to the shin part of the wearer 12.
- the reaction force sensor 50a detects a reaction force with respect to the load on the right leg front side
- the reaction force sensor 50b detects a reaction force with respect to the load on the rear side of the right leg
- the reaction force sensor 52a detects a reaction force against the load on the left leg front side
- the reaction force sensor 52b detects a reaction force against the load on the left leg rear side.
- Each reaction force sensor 50a, 50b, 52a, 52b is composed of, for example, a piezoelectric element that outputs a voltage corresponding to an applied load, and the load change caused by weight shift and between the leg of the wearer 12 and the ground. The presence or absence of grounding can be detected.
- FIG. 4 is a left side view of the motion assisting wearing tool 18.
- FIG. 5 is a rear view of the motion assisting wearing device 18.
- the movement assisting wearing device 18 includes a waist belt 30 to be worn on the waist of the wearer 12, and a right leg assistance provided downward from the right side of the waist belt 30.
- Part 54 and left leg auxiliary part 55 provided on the left side of waist belt 30 below.
- the right leg auxiliary portion 54 and the left leg auxiliary portion 55 are arranged symmetrically with each other, and extend downward from the first frame 56 so as to support the waist belt 30.
- a second frame 58 extending along the outside of the thigh of the wearer 12 and a third frame 60 extending below the second frame 58 and formed along the outside of the wearer 12 And a fourth frame 62 on which the back of the leg of the wearer 12 (shoe sole when wearing shoes) is placed.
- a first joint 64 having a bearing structure is interposed between the lower end of the first frame 56 and the second frame 58, and the first frame 56 and the second frame 58 are rotatably connected. is doing.
- the first joint 64 is provided at a height position that coincides with the hip joint, the first frame 56 is coupled to the support side of the first joint 64, and the second frame 58 is coupled to the rotation side of the first joint 64. Has been.
- a second joint 66 having a bearing structure is interposed between the lower end of the second frame 58 and the third frame 60, and the second frame 58 and the third frame 60 can be rotated.
- the second joint 66 is provided at a height position that coincides with the knee joint, the second frame 58 is coupled to the support side of the second joint 66, and the third frame 60 is disposed on the rotation side of the second joint 66. Are connected.
- the second frame 58 and the third frame 60 perform a pendulum movement with the first joint 64 and the second joint 66 as pivot points with respect to the first frame 56 fixed to the waist belt 30. It is installed so that it can be done. That is, the second frame 58 and the third frame 60 are configured to perform the same operation as the legs of the wearer 12.
- a motor bracket 68 On the support side of the first joint 64 and the second joint 66, a motor bracket 68 is provided.
- the motor bracket 68 has a motor support portion 68a protruding in the outer horizontal direction, and the drive motors 20, 22, 24, and 26 are vertically attached to the motor support portion 68a. Therefore, the drive motors 20, 22, 24, and 26 are provided so as not to protrude greatly to the side and to be difficult to contact surrounding obstacles during walking motion.
- the first joint 64 and the second joint 66 are driven to the second frame 58 and the third frame 60 on the driven side via the rotational axial force gears of the drive motors 20, 22, 24, and 26. It is configured to transmit torque.
- the drive motors 20, 22, 24, 26 have angle sensors 70, 72, 74, 76 for detecting the joint angles (the joint angle is applied to the joint angle detection means 142).
- Angle sensors 70, 72, 74, 76 ⁇ for example, a rotary encoder that counts the number of pulses proportional to the joint angle of the first joint 64 and the second joint 66, etc. The signal is output as a sensor output.
- the angle sensors 70 and 72 detect a rotation angle between the first frame 56 and the second frame 58 corresponding to the joint angle ( ⁇ hip) of the hip joint of the wearer 12.
- the angle sensors 74 and 76 Then, the rotation angle between the lower end of the second frame 58 and the third frame 60 corresponding to the joint angle ( ⁇ knee) of the knee joint of the wearer 12 is detected.
- first joint 64 and the second joint 66 are configured to rotate only within an angle range in which the wearer's 12 hip joint and knee joint can be rotated.
- a stagger mechanism (not shown) is built in so as not to give excessive movement.
- a first fastening belt 78 that is fastened to the thigh of the wearer 12 is attached to the second frame 58.
- a second fastening belt 80 that is fastened under the knee of the wearer 12 is attached to the third frame 60. Accordingly, the drive torque generated by the drive motors 20, 22, 24, and 26 is transmitted to the second frame 58 and the third frame 60 through the gears, and further, the first fastening belt 78 and the second fastening belt 80. Is transmitted as an assisting force to the leg of the wearer 12 via.
- the fourth frame 62 is rotatably connected to the lower end of the third frame 60 via a shaft 82. Further, the lower end of the fourth frame 62 is provided with a heel receiving portion 84 on which the heel portion of the shoe sole of the wearer 12 is placed.
- the second frame 58 and the third frame 60 can be adjusted in length in the axial direction by a screw mechanism, and can be adjusted to any length according to the length of the legs of the wearer 12.
- Each of the frames 56, 58, 60, 64 is made of metal, and can support the weights of the batteries 32, 34, the control back 36, and the movement assisting device 18 provided on the waist belt 30. it can. That is, the motion assisting device 10 is configured such that the weight of the motion assisting wearing tool 18 or the like does not act on the wearer 12 and is attached so as not to apply an extra load to the wearer 12.
- FIG. 6 shows the procedure of the assist control process executed by the control device 100 in accordance with the walking motion of the wearer 12 when the motion assisting wearing tool 18 is worn on the wearer 12 as described above. Will be described with reference to FIG.
- step S 11 the control device 100 is detected by the angle sensors 70, 72, 74, 76 corresponding to the joint angle detection means 142 in step S 11 (hereinafter, “step” is omitted).
- step Acquire joint angles ( ⁇ knee, ⁇ hip).
- step12 the myoelectric potential signals (EMGknee, EMGhip) detected by the myoelectric potential sensors 38a, 38b, 40a, 40b, 42a, 42b, 44a, 44b corresponding to the biological signal detecting means 144 are acquired.
- the process proceeds to S17, and a command signal is sent to a motor driver (not shown) corresponding to the power amplification means 141.
- a motor driver (not shown) corresponding to the power amplification means 141.
- the drive motors 20, 22, 24 and 26 corresponding to the drive source 140 are driven by the joint torque ( ⁇ knee, ⁇ hip) obtained from the wearer 12 and the drive torque based on the myoelectric potential signals (EMGknee, EMGhip).
- This driving torque is transmitted as an assisting force to the leg of the wearer 12 via the second frame 58, the third frame 60, the first fastening belt 78, and the second fastening belt 80.
- the command signal (control signal) generated by the correction gain P ' is the gain P
- a control signal smaller than that in the case of the gain P is supplied to a motor driver (not shown) corresponding to the power amplifying means 141.
- the drive motors 20, 22, 24, and 26 generate a drive torque smaller than that in the case of the gain P.
- the drive motors 20, 22, 24, and 26 generate drive torques based on the measured values of the myoelectric signals (EMGknee, EMGhip) corresponding to the intention of the wearer 12 regardless of the phase of each operation.
- This driving torque is transmitted as an assisting force to the leg of the wearer 12 via the second frame 58, the third frame 60, the first fastening belt 78, and the second fastening belt 80.
- the wearer 12 can obtain an assist force according to the intention of the wearer 12 by a control method in which autonomous control as described above and voluntary control approximate to voluntary control are mixed.
- control processing for the final phase of the task it is confirmed whether or not control processing for the final phase of the task is being performed. If the control process for the final phase of the task remains in S18, the process returns to S11 and the control process (S11 to S18) for the next phase is performed. If the control process for the final phase of the task is performed in S18, the current control process is terminated.
- the equation of motion data (Mi) is for constructing the equation of motion of the entire system consisting of the motion assist device 10 and the wearer 12, while the known parameter (Pk) is the weight of each part in the motion assist device 10 and the joints.
- the dynamic parameters such as the moment of inertia, the viscosity coefficient, and the Coulomb friction coefficient are obtained.
- the equation of motion here refers to the entire system composed of the motion assisting device 10 and the wearer 12, and is represented by, for example, the models shown in FIGS. 7A, 7B, 8A, 8B and Equation (1).
- FIG. 7A is a diagram showing each element of the mathematical model.
- FIG. 7A is a side view of the leg of the wearer 12 to which the movement assisting wearing device 18 is worn
- FIG. 8A is a diagram showing the effect of the assist force by the drive source 140 and the muscle strength of the wearer 12, and the resultant force of the drive torque (Te) of the drive source 140 and the muscle torque (Tm) of the wearer 12 is the joint moment
- FIG. 8B is a diagram schematically showing torques that act when the legs are rotated upward (or forward) around the knee joint.
- the motion assisting wearing device 18 corresponds to the knee joint.
- the third frame 60 rotates around the second joint 66.
- the wearer 12 generates muscle force (Tm) as torque centered on the knee joint, and the drive torque (Te) of the drive source 140 acts on the third frame 60 centering on the second joint 66.
- the resultant force of the driving torque (Te) of the driving source 140 and the muscle torque (Tm) of the wearer 12 acts on the leg of the wearer 12 as a joint moment ( ⁇ ).
- the drive torque (Te) of the drive source 140 is obtained by the control system of the drive motors 20, 22, 24, and 26 described above, and the joint moment ( ⁇ ) is obtained by force sensors 45 and 46 as described later. It is obtained based on the detected signal, that is, the detection signal of the distortion caused by the difference between the driving torque (Te) and the muscle torque (Tm) of the wearer 12.
- the muscle torque (Tm) of the wearer 12 cannot be directly measured while the force is applied, and is obtained from the difference between the joint moment ( ⁇ ) and the drive torque (Te).
- Equation (1) subscript 1 means a crotch parameter, subscript 2 means a knee parameter, and e means a parameter of the motion assist device 10. And m means the parameter of the wearer 12.
- R (q) means inertial term
- G (q) means gravitational term
- D means viscous friction term
- C means Coulomb friction term
- H Coriolis It means force term (collectively called inertia term)
- Te means driving torque by driving source 140
- Fm means muscle moment term due to muscle force
- U means muscle activity term.
- Equation (2) is converted to Equation (3) using the motion variable data matrix ⁇ and the dynamic parameter matrix X.
- the motion variable data matrix ⁇ can be obtained by various detection means and various estimation means, while the dynamic parameter matrix X is applied to the wearer 12.
- the meter becomes unknown or variable due to individual differences and physical condition of the wearer 12.
- Equation (3) introduces an estimated dynamic parameter matrix X * for estimating the dynamic parameter matrix X, and the error difference between the dynamic parameter matrix X and the estimated dynamic parameter matrix X *. If the error matrix ⁇ is also used, it is converted to Equation (4).
- Equation (4) the unknown parameter (Pu) that minimizes the error matrix ⁇ (zero matrix) is expressed by Equation (5).
- the unknown parameter (Pu) related to the wearer 12 is derived by solving Equation (5) (resulting in solving Equation (1), which is the original equation of motion).
- parameter identification processing and torque estimation processing executed by the parameter identification unit 160 and the joint torque estimating means 152 when the motion assisting wearing device 18 is worn on the wearer 12 will be described.
- FIG. 9A is a diagram showing a parameter correction process executed when the motion assisting wearing device 18 is worn on the wearer 12, and a flowchart showing the procedure of the parameter identification process performed in the meter identification unit 160.
- FIG. 9B shows the functions performed by the joint torque estimating means 152. It is a flowchart which shows the procedure of the torque estimation process which estimates a node torque.
- the parameter identification unit 160 when processing is started in response to a command from the control device 100, the parameter identification unit 160, when a power switch (not shown) is turned on as shown in FIG. 9A (S70), Read the equation of motion data (Mi) and the known parameter (Pk) from the storage unit 156 (S71), and use the equation of motion (Equations (1) to (5)) on the computing environment of the CPU (central processing unit). (S72).
- the joint torque estimating means 152 when a power switch (not shown) is turned on as shown in FIG. 9B (S80), the relative force data ( ⁇ After reading F) (S81), the differential force joint moment ( ⁇ T) between the product of this relative force data ( ⁇ F) multiplied by a preset coefficient and the drive torque estimation data (Te) is estimated ( S 82).
- the muscle torque estimation means 153 reads the drive torque estimation data (Te) estimated by the drive torque estimation means 150 and the joint moment estimation data ( ⁇ ) estimated by the joint torque estimation means 152 (S83). ),
- the muscle torque (Tm) due to the muscle strength of the wearer 12 is estimated based on the correspondence shown in FIGS. 8A and 8B (S84).
- the same processing is repeated until an end command is given from the control means 200 (Yes in S85), and the processing ends when the end command is given. (No in S85).
- the muscle torque (Tm) is obtained in order to enable parameter identification even when the wearer 12 is generating muscle force. It is.
- the parameter identification unit 160 reads the drive torque estimation data (160 ′) and the joint data ( ⁇ ) from the data input unit 154 as shown in FIG. 9A (S73), and joint torque estimation means
- the joint moment data ( ⁇ T) is read from 152 (S74).
- the parameter identification unit 160 appropriately substitutes each of the read data into the formula (5) or a formula that also takes into account the muscle torque (Tm) (S75).
- Unknown parameters (Pu) such as moment of inertia around the joint, viscosity coefficient, Coulomb friction coefficient, etc. Is identified.
- FIG. 10A, FIG. 10B, FIG. 10C, FIG. 11, FIG. 12A, and FIG. 12B show an example of the result of identifying the unknown parameter (Pu) of the wearer 12 by the parameter identification unit 160.
- the wearer 12 is in a weak state, and the driving source 140 is controlled by PD (Proportional Derivative) control in the control unit 200 so that the joint angle ⁇ of each joint draws a predetermined trajectory. Drive control is performed.
- the target angle of the joint angle ⁇ follows a synthetic sine wave pattern that includes frequencies of 0.2, 0.5, lO (Hz) to improve the calculation accuracy as much as possible within the range that satisfies the motion characteristics of the leg. It is supposed to be.
- the range of joint angle ⁇ that is, the motion range, considers the maximum flexion angle in the leg motion, and the hip joint is kept within the range of -0.2 to 0.5 (rad) and the knee joint within the range of 0 to 1.0 (rad). ing. Furthermore, the number of repetitions for averaging described above is 10 times.
- FIG. 10A shows experimental data of the transient response of the dynamics parameter including the unknown parameter (Pu) when the meter identification process is performed, and is a graph showing the convergence pattern of the moment of inertia
- FIG. 10B is a graph showing the convergence pattern of the gravitational moment
- FIG. 10C is a graph showing the convergence pattern of the viscosity coefficient.
- FIG. 11 is experimental data showing experimental results when parameter identification processing is performed under the same conditions for each of subjects A, B, and C as wearers 12, and kinetic parameters are shown. This shows that the individual moments of subjects A, B, and C are reflected in the moment of inertia, viscous friction coefficient, gravity moment, and Coulomb friction. In other words, subjects A, B, and C have different physical characteristics such as height and weight, so each person walks.
- the experimental data force in Fig. 11 shows that the stride and muscular strength when performing row movements are different, and the inertial moment, viscous friction coefficient, gravity moment, and Coulomb friction when parameter identification processing is performed under the same conditions also have different values. . Therefore, when the motion assisting device 18 is mounted on the wearer 12, the parameters are corrected so that the assist force corresponding to each wearer having different physical characteristics can be obtained by performing the parameter identification process described above. It becomes possible to do.
- Fig. 12A is experimental data showing an example of identification accuracy by the parameter identification processing of the present embodiment, a graph showing identification accuracy of the inertia moment of the hip joint accompanying walking motion, and Fig. 12B is a knee accompanying walking motion. It is a graph which shows the identification accuracy of the inertia moment of a joint.
- the graphs shown in Fig. 12A and Fig. 12B show the measured values (R1) and identification values (R2) superimposed on the transient response of the moment of inertia around the hip and knee joints. It can be seen that the transitions almost overlap. In other words, the measured value (R1) and the identified value (R2) in FIGS. 12A and 12B are very similar to each other, demonstrating that they have sufficient identification accuracy.
- FIG. 13 is a flowchart showing a calibration procedure performed in the calibration unit 158.
- the parameter identification method by the calibration unit 158 will be described using this flowchart.
- the calibration unit 158 reads the set gain (Gs) from the data storage unit 156 (S91), and then the myoelectric potential data (EMG) and muscle torque estimation data (from the data input unit 160) ( Tm) is read (S92).
- Gs set gain
- EMG myoelectric potential data
- Tm muscle torque estimation data
- the calibration unit 158 includes an error range (Ea) internal force in which the difference between the ratio (TmZEMG) of the muscle torque estimation data (Tm) and the EMG data (EMG) and the set gain (Gs) is acceptable. It is determined whether or not (S93).
- Ea error range
- the ratio (TmZEMG ') of the muscle torque estimation data (Tm) and the corrected myoelectric potential data (EMG') becomes substantially equal to the set gain (Gs). It is possible to prevent a situation where the detection result is insensitive or excessively sensitive. As a result, it is possible to prevent a situation where the identification accuracy of the unknown parameter (Pu) of the wearer 12 described above is lowered and to prevent a situation where the assist force generated by the drive source 140 is too small or too large. .
- the muscle torque (Tm) or muscle strength of the wearer 12 can be obtained by the joint torque estimating means 152 and the muscle torque estimating means 153. Therefore, it is possible to remarkably suppress the burden imposed on the wearer 12 as compared with those without using them. Specifically, if neither the joint torque estimating means 152 nor the muscle torque estimating means 153 is used, in order to obtain the muscle torque (Tm) or muscle strength of the wearer 12, a predetermined drive is performed by the drive source 140. It is necessary to apply a torque (Te) and to force the wearer 12 to maintain a stationary state for a predetermined time in this state. For this reason, the required muscle strength is forced regardless of the muscle strength that the wearer 12 can generate, and the force and the required waiting time are forced. According to the motion assisting device 10 of the present embodiment, Can be prevented, which is preferable.
- the control method applied to the motion assisting device 10 is not particularly limited.
- a method based on a so-called classical control theory such as PD control can be applied.
- the simulation reflecting the identification result is performed.
- the optimal compensator parameters can be set in the simulation, so that it is possible to exert the effect according to the control method.
- control method applied to the control device 100 is not particularly limited as long as it is based on modern control theory using an optimal regulator or an optimal observer.
- This control method compensates for the gravity term G (q) in the above-described equation (1), and suppresses the influence of the gravity term G (q).
- the PD feedback control input (control signal Ur) applied to the drive torque (Te) by the drive source 140 is expressed by Equation (7).
- control signal Ur that is driven by the drive torque (Te) from the drive source 140 is expressed by Equation (8).
- Equation (8) it is possible to cancel the gravity term G (q) of the controlled object when feedback control is performed, and the own gravity applied to the wearer 12 and the operation auxiliary wearing It is possible to suppress the gravity from the movement assisting wearing device 18 which acts when the wearing device 18 is worn.
- This control method compensates for the inertial term R (q) in the above equation (1) and suppresses the influence of the inertial term R (q).
- Ur - ⁇ ,-Q e )-K D q + H (q, q).
- the inertial term H to be controlled can be canceled when feedback control is performed.
- the inertial force from the auxiliary wearing device 18 can be suppressed, and the burden on the wearer 12 can be remarkably reduced particularly when trying to perform a quick operation.
- Ur -K P (Q S - ⁇ ⁇ )-1 K D q + G (q) + H (q, q) (1 0)
- Impedance control focuses on the viscoelastic characteristics of a human (wearer 12) and freely adjusts the characteristics such as inertia, viscosity, and rigidity of the controlled object. It has the feature that the force acting between them can be selected appropriately.
- the motion assisting device 10 can change and adjust the characteristics of the wearer 12 indirectly by changing the characteristics of the entire system including the wearer 12 added to itself. In other words, when impedance control is applied to the control device 100, the characteristic (impedance) of the wearer 12 is indirectly adjusted through the motion assisting device 10 worn by the wearer 12 in the conventional manner. It will be possible to achieve a strong effort. Note that the impedance control applied to the control device 100 is controlled by the entire system composed of the motion assist device 10 and the wearer 12, and hence should be distinguished from normal impedance control.
- Equation (1) is converted as shown in Equation (12).
- Equation (12) the inertia term of the entire system is changed from R (q) to [R (q) -R '(q)], and the viscous friction term is changed from D to ( D ⁇ D ′), and these terms can be adjusted by appropriately setting R ′ (q) and D ′.
- the influence of the inertial term and viscous friction term from the motion assist device 10 can be suppressed, so that the ability of the wearer 12 to perform the agile motion such as reflection inherent in the wearer 12 can be maximized. It becomes.
- the influence of the wearer 12's own inertia and viscous friction terms can be suppressed, allowing the wearer 12 to walk faster than the original period, or to be smoother than before wearing (with less viscous friction! Ii) Do this by moving it.
- the control means can be configured by applying at least one of the gravity compensation, inertia compensation, and hybrid impedance control. Specifically, after the control method data (Ci) relating to any of these control methods is read from the data storage unit 156 to the control unit 200, the control method data (Ci) is displayed on the calculation environment of the control unit 200.
- the control means can be configured based on the above. Control means configured in this way Therefore, based on each detected data and each estimated data, a control signal Ur according to a predetermined control method can be generated, and as a result, an assist force corresponding to the control method is given to the wearer 12. Can be granted.
- FIG. 14 to FIG. 16 show the effects when impedance control is applied to the control device 100, and are graphs respectively showing experimental results in which the wearer 12 performs the same operation. More specifically, Fig. 14A is a graph showing the knee joint angle change without control (no assist), Fig. 14B is a graph showing myoelectric potential change without control (no assist), and Fig. 14C is no control (assist). Is a graph showing the strain gauge output change.
- Fig. 15A is a graph showing changes in knee joint angle of assist by PD control
- Fig. 15B is a graph showing changes in myoelectric potential of assist by PD control
- Fig. 15C is a graph showing changes in strain gauge output of assist by PD control. is there.
- Fig. 14A is a graph showing the knee joint angle of assist by PD control
- Fig. 15B is a graph showing changes in myoelectric potential of assist by PD control
- Fig. 15C is a graph showing changes in strain gauge output of
- FIG. 16A is a graph showing changes in knee joint angle of assist by PD control + hybrid impedance control
- Fig. 16B is a graph showing changes in myoelectric potential of assist by PD control + hybrid impedance control
- Fig. 16C is by PD control + hybrid impedance control. It is a graph which shows the strain gauge output change of assist.
- the experimental conditions are a series of motions of swinging the leg up while swinging down while sitting down, and the myoelectric potential (EMG) and relative force (more precisely, this) from the wearer 12 performing the motion.
- the output of the sensor is converted to (a).
- FIG. 15A, FIG. 15B, and FIG. 15C the electromyogram (EMG) from the wearer 12 is halved overall compared to the case without assist (indicated by the dotted line), especially during the swing-up period (L1). It can be seen that the waveforms are very similar and appropriate assist is being performed. This is supported by the fact that the force sensor output (relative force AF) is higher than that without assist (Ano), especially during the swing-up period (L1).
- the influence of the above-mentioned interaction force moment Ma appears in the latter half of the swing-down period (L2). The person 12 can be uncomfortable.
- the myoelectric potential (EMG) from the wearer 12 is halved not only during the swing-up period (L1) but also during the swing-down period (L2), and
- the response waveforms are very similar, and it can be said that appropriate assistance is performed during the whole period!
- the dynamic identification parameters specific to the wearer 12 are identified by the parameter identification unit 160 in the state worn by the wearer 12,
- the drive source 140 can be controlled by the control device 100 based on the equation of motion (Equation (5), etc.) into which the identified dynamic parameters are substituted, so that it does not depend on individual differences of the wearer 12 or fluctuation factors such as physical condition.
- the effect according to the control method used by the control device 100 can be exhibited.
- the control device 100 uses the motion equation (Equation (1), etc.) into which the muscle torque (Tm) estimated by the muscle torque estimation means 153 is also substituted. Since the drive source 140 can be controlled, the dynamic parameters can be identified even when the muscle force is generated from the wearer 12, and the waiting time for identifying the dynamic parameters can be determined. The above effects that are not required for 12 can be exhibited.
- the motion assisting device 10 of the present embodiment at least one of gravity compensation and inertia compensation using the dynamic parameters identified by the parameter identification unit 160 can be applied to the control device 100. Therefore, it is possible to prevent a situation in which the weight of the motion assisting device 10 itself becomes a burden on the wearer 12 and a situation in which the inertia of the motion assisting device 10 itself gives a strange feeling to the wearer 12 during operation.
- the dynamic impedance control method using the dynamic parameters identified by the parameter identifying unit 160 can be applied to the control device 100.
- the conventional power of adjusting the characteristics (impedance) of the wearer 12 indirectly through self.
- an effect specific to impedance control such as realizing a light and powerful operation by reducing the apparent inertia and viscosity.
- the motion assist device 10 configured to apply assist force to the leg of the wearer 12 has been described as an example.
- the present invention is not limited thereto, and for example, assists the arm motion.
- the present invention can also be applied to the motion assisting device configured as described above.
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Abstract
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Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
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AT05809527T ATE526000T1 (de) | 2005-01-26 | 2005-11-22 | Bewegungsunterstützungsvorrichtung vom tragbaren typ und kontrollprogramm |
CA2596346A CA2596346C (en) | 2005-01-26 | 2005-11-22 | Wearable action-assist device and control program |
CN2005800472904A CN101111211B (zh) | 2005-01-26 | 2005-11-22 | 穿戴式动作辅助装置以及控制用程序 |
EP11176919.6A EP2392305B1 (en) | 2005-01-26 | 2005-11-22 | Wearable action-assist device and control program |
EP05809527A EP1842518B1 (en) | 2005-01-26 | 2005-11-22 | Wearing-type motion assistance device and program for control |
US11/795,907 US7857774B2 (en) | 2005-01-26 | 2005-11-22 | Wearing-type motion assistance device and program for control |
DK05809527.4T DK1842518T3 (da) | 2005-01-26 | 2005-11-22 | Bevægelseshjælpeindretning af en type til at have på og program til styring |
US12/881,796 US8932241B2 (en) | 2005-01-26 | 2010-09-14 | Wearable action-assist device and control program |
US14/561,933 US9427373B2 (en) | 2005-01-26 | 2014-12-05 | Wearable action-assist device and control program |
Applications Claiming Priority (2)
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JP2005018295A JP4178187B2 (ja) | 2005-01-26 | 2005-01-26 | 装着式動作補助装置及び制御用プログラム |
JP2005-018295 | 2005-01-26 |
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US11/795,907 A-371-Of-International US7857774B2 (en) | 2005-01-26 | 2005-11-22 | Wearing-type motion assistance device and program for control |
US12/881,796 Continuation US8932241B2 (en) | 2005-01-26 | 2010-09-14 | Wearable action-assist device and control program |
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WO2006080134A1 true WO2006080134A1 (ja) | 2006-08-03 |
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PCT/JP2005/021472 WO2006080134A1 (ja) | 2005-01-26 | 2005-11-22 | 装着式動作補助装置及び制御用プログラム |
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US (3) | US7857774B2 (ja) |
EP (2) | EP2392305B1 (ja) |
JP (1) | JP4178187B2 (ja) |
KR (1) | KR100904937B1 (ja) |
CN (1) | CN101111211B (ja) |
AT (1) | ATE526000T1 (ja) |
CA (1) | CA2596346C (ja) |
DK (2) | DK2392305T3 (ja) |
RU (1) | RU2364385C2 (ja) |
WO (1) | WO2006080134A1 (ja) |
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JP2010504167A (ja) * | 2006-09-19 | 2010-02-12 | マイオモ インコーポレイテッド | 動力で作動する矯正デバイス |
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JP2014023795A (ja) * | 2012-07-27 | 2014-02-06 | Dainippon Printing Co Ltd | 情報生成装置並びに情報生成方法、情報生成用プログラム及び情報記録媒体 |
RU2523635C1 (ru) * | 2013-02-20 | 2014-07-20 | Общество с ограниченной ответственностью "Инновационные реабилитационные технологии" | Способ восстановления двигательной активности суставов верхних и нижних конечностей путем пассивного движения |
RU2657852C2 (ru) * | 2016-09-20 | 2018-06-15 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Российский государственный университет физической культуры, спорта, молодежи и туризма (ГЦОЛИФК)" (РГУФКСМиТ) | Способ реабилитации при повреждениях коленного сустава |
CN111315544A (zh) * | 2017-11-08 | 2020-06-19 | 本田技研工业株式会社 | 步行移动辅助装置 |
CN111315544B (zh) * | 2017-11-08 | 2023-04-25 | 本田技研工业株式会社 | 步行移动辅助装置 |
CN114797007A (zh) * | 2022-04-02 | 2022-07-29 | 中国科学技术大学先进技术研究院 | 用于康复的穿戴式水下外骨骼机器人及其使用方法 |
Also Published As
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DK1842518T3 (da) | 2011-12-05 |
US20080161937A1 (en) | 2008-07-03 |
DK2392305T3 (da) | 2019-06-24 |
US20150150747A1 (en) | 2015-06-04 |
EP1842518A1 (en) | 2007-10-10 |
EP1842518A4 (en) | 2010-01-20 |
CA2596346C (en) | 2010-06-29 |
RU2364385C2 (ru) | 2009-08-20 |
JP4178187B2 (ja) | 2008-11-12 |
EP2392305B1 (en) | 2019-04-03 |
CN101111211A (zh) | 2008-01-23 |
JP2006204426A (ja) | 2006-08-10 |
CN101111211B (zh) | 2011-01-19 |
CA2596346A1 (en) | 2006-08-03 |
ATE526000T1 (de) | 2011-10-15 |
EP2392305A1 (en) | 2011-12-07 |
US9427373B2 (en) | 2016-08-30 |
KR100904937B1 (ko) | 2009-06-29 |
US7857774B2 (en) | 2010-12-28 |
KR20070092312A (ko) | 2007-09-12 |
EP1842518B1 (en) | 2011-09-28 |
RU2007132169A (ru) | 2009-03-10 |
US20110004322A1 (en) | 2011-01-06 |
US8932241B2 (en) | 2015-01-13 |
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