Multi-objective complementary control of permanent magnet synchronous motors

• Published in: Dianji yu Kongzhi Xuebao = Electric Machines and Control Vol. 29; no. 6; p. 134
• Main Authors: Zhang, Guilin, Xu, Shuliang, Liu, Haotian
• Format: Journal Article
• Language: Chinese; English
• Published: Harbin Harbin University of Science and Technology 01.01.2025
• Subjects: Control methods; Controllers; H-infinity control; Identification methods; Noise measurement; Permanent magnets; Rejection; Robust control; Tracking control; Uncertainty
• ISSN: 1007-449X
• DOI: 10.15938/j.emc.2025.06.014

To address the challenges of high-performance tracking control for permanent magnet synchronous motor under model uncertainty, external disturbances, and measurement noise, along with the limitations of a single control structure, a robust control method was proposed that combines tracking and disturbance rejection capabilities. Initially, the system's nominal model and multiplicative uncertainty model were established using the sinusoidal frequency-sweeping identification method. A PI controller was designed to achieve high tracking performance, while an H ∞ controller was developed to mitigate the effects of model uncertainties and enhance system Robustness. Subsequently, integrating the PI and H ∞ controllers within a multi-objective complementary control structure, a robust controller was formulated, effectively resolving the conflict between system robustness and optimal performance . the disturbance rejection capability of the H ∞ controller with the tracking performance of the PI controller.