Robust Resolver Fault Detection Design With Guaranteed Sensitivity for Electric Drive System in Electric Vehicles
Xiaoyuan Zhu, Pengfei Tao, Yiheng Wang, Luming Li, Cheng Shen · IEEE Transactions on Transportation Electrification · 2025
Resolver is common and essential to electric drive system for electric vehicle with high-durability requirements. Under internal high nonlinearities of permanent magnet synchronous motors (PMSM) and external complex operating condition of electric vehicle, design of efficient and robust fault detection methods of electric drive system is challenging. Focused on resolver condition monitoring, this paper presents a robust position fault detection design for electric drive system with guaranteed sensitivity. A linear parameter-varying (LPV) model is firstly developed for electric drive system, in which PMSM model is described in the α − β frame. And sensor fault, parameter variations as well as external disturbances are all considered. Then, a fault detection method based on theH∞/H_ observer is designed to simultaneously fulfill the robustness of disturbances and sensitivity of sensor faults for electric drive system. Finally, both simulation and experimental validation tests are conducted, and the results demonstrate the effectiveness and practicality of the proposed method.