Rotary traveling wave ultrasonic motor with backup function and driving control method thereof

An ultrasonic motor, rotary type technology, applied in the direction of generator/motor, piezoelectric effect/electrostrictive or magnetostrictive motor, electrical components, etc., can solve the problem that the ultrasonic motor cannot be coaxially backed up, and achieve torque Large, high maximum output speed, excellent low temperature start-up effect

Active Publication Date: 2020-09-18
NUAA SUPER CONTROL TECHNOLOGY CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The invention provides a rotary traveling wave ultrasonic motor with a backup function and its drive control method, which solves the technical bottleneck problem that the existing ultrasonic motor cannot be coaxially backed up, has a backup function itself, and improves its own safety and reliability

Method used

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  • Rotary traveling wave ultrasonic motor with backup function and driving control method thereof
  • Rotary traveling wave ultrasonic motor with backup function and driving control method thereof
  • Rotary traveling wave ultrasonic motor with backup function and driving control method thereof

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Embodiment Construction

[0057] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, and only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0058] Because of its self-locking characteristics, in the aerospace, nuclear power and other fields, when the ultrasonic motor fails, the motor cannot be replaced immediately, which will cause major losses. Therefore, an ultrasonic motor that can realize the backup function is needed. , there is no ultrasonic motor with a backup function at present.

[0059] In order to solve the above problems, the application provides a rotary traveling wave ultrasonic motor with a backup function, including a stator base 1, a casing 5, a stator elastic body assembly 3 and a rotor assembly 9, and the stator elastic body assembly 3 is fixedly installed on the stator base 1 Ab...

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Abstract

The invention relates to a rotary traveling wave ultrasonic motor with a backup function and a driving control method thereof. The rotary traveling wave ultrasonic motor works in the working mode thatone piezoelectric ceramic piece works and the other piezoelectric ceramic piece is standby, and when the piezoelectric ceramic piece in work is detected to be abnormal, the piezoelectric ceramic piece in the standby state is automatically or manually controlled to be switched to continue to work. Compared with the existing rotary traveling wave ultrasonic motor, the rotary traveling wave ultrasonic motor provided by the invention has the advantages that the technical bottleneck problem that an existing ultrasonic motor cannot be coaxially backed up is solved, higher safety and larger advantages are achieved on the occasions that the motor cannot be replaced at the first time for troubleshooting in aerospace, nuclear power and the like and other occasions where the motor needs to be coaxially backed up to improve the reliability of the system, and the system can be ensured to better complete tasks.

Description

technical field [0001] The invention relates to a rotary traveling wave ultrasonic motor with a backup function and a driving control method thereof, belonging to the technical field of ultrasonic motors. Background technique [0002] Ultrasonic motor is a brand-new micro-motor developed in the 1980s. Its working principle is to use the inverse piezoelectric effect of the piezoelectric ceramic sheet to excite the micro-amplitude vibration of the elastomer stator in the ultrasonic frequency domain, and through The friction between the stator and the rotor converts the micro-vibration of the stator elastic body into the macroscopic rotational motion of the rotor, which outputs power and drives the load. Compared with the traditional electromagnetic motor, this new type of micro motor has the following advantages [0003] 1. Compact structure, large thrust-to-weight ratio; [0004] 2. Fast response, self-locking when power off; [0005] 3. The position resolution is relative...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N2/12H02N2/14H02N2/16
CPCH02N2/12H02N2/142H02N2/163
Inventor 杨模尖杨淋赵淳生
Owner NUAA SUPER CONTROL TECHNOLOGY CO LTD
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