【摘要】 为了提高永磁同步电机的抗干扰能力和动态响应能力，提出了一种利用预定义时间滑模的增量式模型预测电流控制策略。针对预测模型中的参数扰动问题，设计了一种基于预设时间的滑模扰动观测器，用于估计每个控制周期内的扰动，并将这些估计的扰动值前馈至控制器进行补偿，从而增强系统对参数变化的鲁棒性。基于预定义时间趋近律与积分滑模设计了滑模速度控制器，引入扩张状态观测器来估计控制器中的未知扰动，以提高系统的跟踪精度。仿真结果验证了所提控制方法的干扰抑制和跟踪能力。更多还原

【Abstract】 To improve the disturbance rejection capability and dynamic response of permanent magnet synchronous motors(PMSM), an incremental model predictive current control strategy using a predefined-time sliding mode was proposed. To address the issue of parameter perturbations in the predictive model, a predefined-time sliding mode disturbance observer was designed to estimate disturbances within each control cycle. These estimated disturbance values were fed forward to the controller for compensation, enhancing the system’s robustness to parameter variations. A sliding mode speed controller was designed based on predefined-time reaching law and integral sliding mode, and an extended state observer was introduced to estimate unknown disturbances in the controller to improve the tracking accuracy of the system. Simulation results verify the proposed control method’s disturbance suppression and tracking capabilities.更多还原