Mechanical resonance suppression of permanent magnet servo system based on shaft torque compensation

Journal of Lanzhou University of Technology ›› 2022, Vol. 48 ›› Issue (4): 76-82.

• Automation Technique and Computer Technology • Previous Articles Next Articles

Mechanical resonance suppression of permanent magnet servo system based on shaft torque compensation

BAO Guang-qing^1,2,3, DU He-xuan^1,2,3, QI Wu-gang^1,2,3

1. College of Electrical and Information Engineering,Lanzhou Univ. of Tech., Lanzhou 730050, China;
2. Key Laboratory of Gansu Advanced Control for Industrial Process, Lanzhou Univ. of Tech., Lanzhou 730050, China;
3. National Demonstration Center for Experimental Electrical and Control Engineering Education, Lanzhou Univ. of Tech., Lanzhou 730050, China

Received:2020-12-26 Online:2022-08-28 Published:2022-10-09

Abstract

Abstract: Flexible drive will cause mechanical resonance in the AC permanent magnet servo system and degrade the dynamic performance and control accuracy of the system. Therefore, a Kalman filter-based resonance suppression method for shaft torque compensation is proposed. In this method, the shaft torque estimation value of the flexible drive device is obtained by Kalman filter, which is converted into a current signal and compensated to the given current loop, so as to eliminate the influence of the flexible transmission on the motor speed and improve the dynamic performance of the system. Finally, the effectiveness of the method is verified by simulation.

Key words: permanent magnet synchronous motor, two mass model, mechanical resonance, state feedback, Kalman filter

CLC Number:

TM341

BAO Guang-qing, DU He-xuan, QI Wu-gang. Mechanical resonance suppression of permanent magnet servo system based on shaft torque compensation[J]. Journal of Lanzhou University of Technology, 2022, 48(4): 76-82.

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Mechanical resonance suppression of permanent magnet servo system based on shaft torque compensation

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