Demagnetization-Fault Reconstruction and Tolerant-Control for PMSM Using Improved SMO-Based Equivalent-Input-Disturbance Approach
Demagnetization-Fault Reconstruction and Tolerant-Control for PMSM Using Improved SMO-Based Equivalent-Input-Disturbance Approach
复制标题
使用改进的基于 SMO 的等效输入干扰方法进行 PMSM 退磁故障重建和容限控制
DOI：
10.1109/tmech.2021.3069787
复制
发表时间：
2022-04
影响因子：
6.4
通讯作者：
Xiangfei Li
中科院分区：
文献类型：
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作者：
Kaihui Zhao;Ruirui Zhou;Jinhua She;Changfan Zhang;Jing He;Gang Huang;Xiangfei Li
永磁同步电动机的退磁故障不仅会降低其驱动系统的性能，甚至会导致永磁同步电动机的不可逆退磁。提出了一种基于改进滑模观测器（ISMO）的等效输入扰动（EID）方法，对永磁同步电机驱动系统的退磁故障进行重构，并对退磁故障进行容错控制。首先建立了永磁同步电动机健康和去磁的模型。接下来，通过插入解耦项来构造ISMO。它完全消除了电机转速对退磁故障重建的影响。然后，基于ISMO的EID方法被开发为具有高精度的故障重构和保持系统的控制性能，即使对于退磁故障。利用全局一致最终有界的概念证明了整个系统的稳定性。最后通过半实物仿真验证了该方法的有效性。
A demagnetization fault not only degrades the performance of a permanent magnet synchronous motor (PMSM) drive system, but also may even cause the irreversible demagnetization. This article presents an improved-sliding-mode-observer (ISMO) based equivalent-input-disturbance (EID) method to reconstruct a demagnetization fault and to perform fault-tolerant control for the demagnetization fault in a PMSM drive system. The models of healthy and demagnetized PMSM are first established. Next, an ISMO is constructed by inserting a decoupling term. It completely removes the influence of the motor speed on the reconstruction of a demagnetization fault. Then, the ISMO-based EID approach is developed to reconstruct the fault with the high precision and maintain system control performance even for a demagnetization fault. The stability of the whole system is proved by using the concept of globally uniformly ultimately bounded. Finally, the validity of the method is demonstrated using hardware-in-the-loop simulation.