导航

Acta Aeronautica et Astronautica Sinica ›› 2024, Vol. 45 ›› Issue (10): 329307-329307.doi: 10.7527/S1000-6893.2023.29307

• Electronics and Electrical Engineering and Control • Previous Articles     Next Articles

Fault diagnosis and fault tolerant control of position sensor based on DFPMM

Jie LI1, Wenxin HUANG1, Yiming CAI2, Siyuan WANG2, Yufei GAO2, Xuefeng JIANG2()   

  1. 1.College of Automation Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China
    2.School of Automation,Nanjing University of Science and Technology,Nanjing 210094,China
  • Received:2023-07-11 Revised:2023-08-16 Accepted:2023-09-21 Online:2024-05-25 Published:2023-10-13
  • Contact: Xuefeng JIANG E-mail:jxf@njust.edu.cn
  • Supported by:
    National Natural Science Foundation of China(51807094)

Abstract:

Dual-winding Fault-tolerant Permanent Magnet Motor (DFPMM) drive system has broad prospects due to its high reliability and strong fault tolerance. For the position sensor, there may be disconnection faults, stuck faults and offset faults. Any kind of position sensor failure will lead to the decline of speed regulation performance and abnormal operation of motor. For the traditional three-phase permanent magnet motor system fault diagnosis, the single position reference value is often used for comparison and judgment. When the position reference value estimated by the observer is deviated, it is easy to have misjudgment problems, which will seriously affect the stability of the system. In this paper, based on the characteristics of DFPMM and sliding mode observer, two position reference values are estimated by using two sets of winding data, and a new DFPMM position sensor fault diagnosis and fault-tolerant control method is proposed. The problem of misjudgment caused by the comparison of single reference value in traditional methods is solved. Theoretical analysis, simulation research and experimental verification show that the diagnosis strategy and fault tolerant control strategy can effectively improve the system performance after fault of position sensor, and further improve the reliability of the system.

Key words: fault-tolerant motor, position sensor, fault diagnosis, fault-tolerant control, sliding mode observer

CLC Number: