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Self-adaptive ultrasonic motor based on temperature tracking

An ultrasonic motor, self-adaptive technology, applied in the directions of generators/motors, piezoelectric effect/electrostrictive or magnetostrictive motors, electrical components, etc., can solve the problem of narrowing the working speed range, and achieve a compact design structure. , increase stability, wide range of effects

Active Publication Date: 2014-06-25
西安创联超声技术有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

), if the amplitude-frequency curve of the motor stator is not shifted to the right, the output torque and maximum speed of the motor will also decrease by about 30%, and the working speed range will narrow

Method used

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  • Self-adaptive ultrasonic motor based on temperature tracking
  • Self-adaptive ultrasonic motor based on temperature tracking
  • Self-adaptive ultrasonic motor based on temperature tracking

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0054] The self-adaptive ultrasonic motor based on temperature tracking of the present invention is based on the existing ultrasonic motor technology. The motor stator is composed of stator metal parts 1, piezoelectric ceramics 2, and flexible printed circuit board 5. Electrode glue bonding, special positioning tooling is used in the bonding process; the rotor is composed of rotor metal parts and friction materials, which are bonded together by medium temperature electrode glue, and special positioning tooling is also required.

[0055] The assembly relationship of the various parts of the motor is as follows: the stator and the base are connected with M2.5*8 flat head screws; the motor shaft and the rotor are connected through gears; the rotor is installed above the stator, between the shaft shoulder and the inner ring of the support bearing on the casing Increase the adjustment washer to apply the preload between the stator and the rotor; the casing and the base are connected...

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Abstract

The invention relates to a self-adaptive ultrasonic motor based on temperature tracking. In the prior art, when the ultrasonic motor works in a wide temperature range from -55 DEG C to 85 DEG C, the amplitude frequency curve of a stator translates to right or left, thus the output torque and the rotation speed of the motor are obviously reduced. The self-adaptive ultrasonic motor provided by the invention comprises the ultrasonic motor with a temperature sensing structure and a motor driving controller with a motor leading out mechanism and temperature measurement and control units. A motor closed-loop control sensing system which is composed of a temperature sensor and a photoelectric encoder, a resolver or a potentiometer is added in the motor structure. Self-adaptive adjustment of the motor frequency is carried out through the driving controller, so that the motor always works at the best frequency point, and stable rotation speed and torque output are realized. According to the invention, many characteristics of the existing ultrasonic motor are retained; the work environment adaptability is greatly enhanced; and the motor can normally work in the temperature range from -55 DEG C to 85 DEG C.

Description

technical field [0001] The invention belongs to the technical field of ultra-sonic motors, a branch of micro-special motors, and in particular relates to an adaptive ultrasonic motor based on temperature tracking. Background technique [0002] Ultrasonic motor is a new principle motor developed in the past ten years. It breaks through the concept of traditional motor. It has no magnet steel and windings, and does not rely on electromagnetic induction to transmit energy. It uses the inverse piezoelectric effect of piezoelectric ceramics to expand and contract through piezoelectric ceramics. The conversion and coupling of the vibration mode and the design of the special structure convert the microscopic deformation of the material into the macroscopic motion of the rotor through resonance amplification and friction coupling. It has the characteristics of low speed and large torque, fast response time, good control characteristics, good electromagnetic compatibility, and self-l...

Claims

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Application Information

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IPC IPC(8): H02N2/10H02N2/14
Inventor 潘云华张武李刚强史玉娣刘富品
Owner 西安创联超声技术有限责任公司
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