Device and method for improving motion resolution of standing wave type piezoelectric ultrasonic motor

An ultrasonic motor and resolution technology, applied in the direction of generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, electrical components, etc., can solve the problem of limited application of standing wave piezoelectric ultrasonic motor , to achieve the effect of improving motion resolution

Active Publication Date: 2021-11-09
INST OF MACHINERY MFG TECH CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problem of the limited application of the existing domestic standing wave piezoelectric ultrasonic motor, the invention provides a standing wave piezoelectric ultrasonic motor motion resolution improving device

Method used

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  • Device and method for improving motion resolution of standing wave type piezoelectric ultrasonic motor
  • Device and method for improving motion resolution of standing wave type piezoelectric ultrasonic motor
  • Device and method for improving motion resolution of standing wave type piezoelectric ultrasonic motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] This embodiment provides a standing wave type piezoelectric ultrasonic motor motion resolution improvement device,

[0051] Such as Figure 2-3 As shown, the lifting device of this embodiment includes a mode switching device.

[0052] Wherein, the mode switching device is mainly composed of a holder 1 , a base 2 , a sliding seat 3 and a guide pin 6 .

[0053] The base 2 is fixedly installed on the stable structure of the motion system, the guide pin 6 is fixedly connected in the base 2, the slide seat 3 can move freely in the base 2 along the axial direction of the guide pin 6; the standing wave piezoelectric ultrasonic motor 7 Installed on the sliding seat 3; the holder 1 is used to realize the fixing and releasing of the sliding seat 3, so as to realize the switching of the motion state, so as to realize the motion resolution of the standing wave piezoelectric ultrasonic motor.

[0054] The mode switching device of this embodiment also includes an elastic element 4;...

Embodiment 2

[0063] In this embodiment, the holder 1 of the above-mentioned embodiment 1 is further optimized:

[0064] The clamper 1 of this embodiment adopts a pneumatic device, and the clamper 1 is equipped with two telescopic cylinders inside. After ventilation, the cylinders stretch out against the sliding seat 3, and the frictional force generated by the cylinders is greater than the frictional driving force of the piezoelectric ultrasonic motor 7 , when the driving foot 8 and the rotor 10 of the piezoelectric ultrasonic motor 7 move, the sliding seat 3 cannot move along the guide pin 6, and the sliding seat 3 and the base 2 will not move relative to each other; when the air circuit is disconnected, the cylinder shrinks Back, the sliding seat 3 is separated from the holder 1, and the sliding seat 3 can slide along the axial direction of the guide pin 6, so that the sliding seat 3 and the base 2 form relative motion.

[0065] Such as Figure 4 As shown, the device working process of ...

Embodiment 3

[0071] In this embodiment, the holder 1 and the sliding seat 3 of the above-mentioned embodiment 1 are further optimized:

[0072] The gripper 1 of this embodiment adopts an electromagnetic device, and an electromagnet is housed in the gripper 1, and the slide seat 3 is made of a ferromagnetic material. The attractive force is greater than the friction driving force of the motor, so that the sliding seat 3 cannot move relative to the base 2 when the motor moves. After the electromagnet is de-energized, the holder 1 is separated from the sliding seat 3, and the sliding seat 3 can slide along the axial direction of the guide pin 6, and then the sliding seat 3 and the base 2 form relative motion.

[0073] Such as Figure 5 As shown, the device working process of the present embodiment is as follows:

[0074] Power-on starts to execute motion commands, and automatically obtains signals and judges the motion of piezoelectric ceramic rotor 10 through feedback devices (sensor devic...

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Abstract

The invention discloses a device and method for improving the motion resolution of a standing wave type piezoelectric ultrasonic motor. The device comprises a mode switching device; the mode switching device comprises a clamping device, a base, a sliding seat and a guide pin; the base is fixedly installed on a stable structure, the guide pin is fixedly connected into the base, and the sliding seat is installed in the base and can freely move in the axial direction of the guide pin; the piezoelectric ultrasonic motor is mounted on the sliding seat; and the clamping device is used for fixing and releasing the sliding seat, so that the motion state switching of the piezoelectric ultrasonic motor is realized, and the motion resolution of the piezoelectric ultrasonic motor is improved. According to the invention, the resolution switching device is introduced, so the coarse positioning and fine positioning motion mode conversion of the standing wave type piezoelectric ultrasonic motor is realized, and the motion resolution of the system is effectively improved.

Description

technical field [0001] The invention belongs to the technical field of precision actuation, and in particular relates to a standing wave piezoelectric ultrasonic motor motion resolution improving device and method. Background technique [0002] The standing wave piezoelectric ultrasonic motor has the advantages of simple structure, low vibration, no electromagnetic noise, high positioning accuracy, fast dynamic response, and easy miniaturization. Wide range of applications. The structure of the standing wave piezoelectric ultrasonic motor is as follows: figure 1 As shown, by applying an orthogonal sine wave to the electrode sheet, the motor stator undergoes longitudinal vibration and bending vibration at the same time, which is synthesized into an elliptical motion at the position of the driving foot. During the movement, the driving foot is in contact with the rotor made of piezoelectric ceramic material. Through Friction converts the vibration of the pads into a linear o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/06
CPCH02N2/06
Inventor 胡秋李梦阳郭英杰
Owner INST OF MACHINERY MFG TECH CHINA ACAD OF ENG PHYSICS
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