Multi-parameter rapid measuring and controlling device for ultrasonic motor and measuring and controlling method thereof

Abstract

The invention discloses a multi-parameter rapid measuring and controlling device for an ultrasonic motor and a measuring and controlling method thereof. The device comprises an electric cylinder 1, anannular sleeve 3, a pressure sensor 4, a temperature collecting device 5, an ultrasonic motor 6, a rotary shaft 8, a torque sensor 9, an angle encoder 11, a coupling 12, a torque motor 14, a DC servodriver 15, a base 16, an AC servo driver 17, a driving acquisition circuit 18, a high frequency measurement and control module 19, a measurement and control processor 20 and the like. Therefore, sixparameters including the amplitudes, frequencies, phase differences, precompression values, and load torques and the like of two-phase excitation voltages can be changed in real time during the testing process; and thirteen parameters including the output shaft angular velocity, the angular position, the stator interface temperature and the axial compressive force and the like of the ultrasonic motor can be measured and calculated simultaneously. With the provided multi-parameter rapid measuring and controlling device, the comprehensive and rapid testing demand of the ultrasonic motor can be satisfied; and the multi-parameter rapid measuring and controlling device have advantages of multiple detection parameters, high precision of measurement and control, high test efficiency and high degree of automation.

Description

technical field [0001] The invention relates to the technical field of ultrasonic motor parameter control and performance testing, in particular to a multi-parameter rapid measurement and control device for an ultrasonic motor, and a method for realizing multi-parameter rapid measurement and control of an ultrasonic motor by using the measurement and control device. Background technique [0002] The ultrasonic motor adopts the inverse piezoelectric effect of piezoelectric ceramics and the principle of ultrasonic vibration. Through the friction between the stator and the rotor, the microscopic vibration of the stator is converted into the macroscopic vibration of the rotor. It has low speed, high torque, no electromagnetic noise, and self-locking when power is off. And other characteristics that traditional electromagnetic motors do not have. However, the ultrasonic motor performs energy transfer and conversion through the piezoelectric vibrator movement in the ultrasonic fre...

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Problems solved by technology

From the point of view of the current domestic technology, the patents with publication numbers CN103278770A and CN203231849U disclose a comprehensive testing device for ultrasonic motor performance and its testing method, which uses a vertically arranged pre-pressure device for loading, and there is no corresponding force sensor detection device , the pre-pressure cannot be adjusted accurately online, and the test is only to measure the electrical characteristics of the piezoelectric ceramics through the capacitance meter and the inductance meter, and realize the torque measurement through the corresponding relationship with the torque, the accuracy and real-time performance are limited, and the mechanical characteristic test is not The Chinese patent No. 101266178 discloses a "universal testing device for ultrasonic motors". The patent discloses an open pre-pressure controllable traveling wave ultrasonic motor load characteristic testing device. Although the device can accurately adjust the pre-pressure and test the load characteristics, it does not have the function of quickly adjusting the input signal parameters, nor can it test the temperature, etc. The influence of factors on the performance of the motor; the invention patent with the authorized publication number CN105509812A discloses an ultrasonic motor performance test device, which realizes loading through weights, and the load torque conversion is inflexible, and has no effect on other key parameters such as temperature, voltage and current. cover

The above-mentioned patents only adjust the duty cycle of the current commercial push-pull drive circuit, which can only change the frequency value of the excitation voltage, and cannot achieve flexible and autonomous regulation of the amplitude and phase difference, which seriously restricts the analysis of motor performance under different parameters. with control

[0003] In order to solve the deficiencies of the existing technology, solve the problems of many control parameters of the ultrasonic motor, and the complex quantities to be measured and calculated, we propose a multi-parameter rapid measurement and control device and measurement and control method for the ultrasonic motor

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