【摘要】 传统的内置式永磁同步电机(interior permanent magnet synchronous motor, IPMSM)弱磁控制策略速度控制环中存在抗干扰性能较差、响应速度慢和参数摄动等问题。为增强电机弱磁控制系统的控制性能，研究了基于一种改进趋近律和扰动观测器相结合的滑模控制(sliding mode control, SMC)策略。改进趋近律通过调整符号函数幅值，有效改善了控制信号的抖振性，并缩短了系统轨迹到达滑模面所需的时间。此外，设计的滑模扰动观测器(sliding mode disturbance observer, SMDO)能够准确估计未知干扰，并对新型滑膜控制器(new sliding mode controller, NSMC)进行有效补偿，以应对突变负载下的速度响应超调。仿真结果表明，该控制策略具有较快的响应速度、较强的抗干扰能力和较好的抖振抑制效果。更多还原

【Abstract】 In order to address the issues of poor anti-interference performance, slow response speed, and parameter perturbation in the speed control loop of traditional interior permanent magnet synchronous motor(IPMSM) flux-weakening control strategies, this paper proposes a sliding mode control(SMC) strategy utilizing an enhanced reaching law and a disturbance observer. The enhanced reaching law effectively mitigated control signal chattering and reduced the time for the system trajectory to attain the sliding mode surface. Additionally, the designed sliding mode disturbance observer(SMDO) accurately estimated unknown disturbances, allowing for adequate compensation in the new sliding mode controller(NSMC) and reducing speed response overshoot during abrupt load transients. Simulation results demonstrated that the proposed control strategy significantly improves response speed, anti-interference capability, and chattering suppression.更多还原