针对永磁同步电机易受到负载扰动影响的问题，提出一种预定义时间滑模控制策略，首先基于Lyapunov稳定性理论设计了预定义时间收敛的滑模控制器，使得该速度环控制器能够在预定义时间内收敛于0，同时设计了一种预定义时间滑模扰动观测器来估计扰动值并进行前馈补偿，进一步提高系统的鲁棒性能。最后构建船-机-桨模型进行仿真模拟船舶运行工况来验证控制策略的有效性，仿真结果表明该控制策略有效提高了永磁同步电机控制系统的动态响应能力和鲁棒性，且预定义时间滑模扰动观测器能够有效观测船舶的时变负载。
A predefined-time sliding mode control (PTSMC) strategy is proposed for a permanent magnet synchronous motor control system susceptible to load disturbance. First, a predefined-time convergence sliding mode controller was designed based on the Lyapunov stability theory, ensuring that the speed loop controller converges to zero within a predefined time. Additionally, a predefined-time sliding mode disturbance observer was designed to estimate the disturbance value and provide feedforward compensation, further enhancing the system’s robustness. Finally, a ship-engine-propeller model was constructed to simulate the ship’s operating conditions and validate the effectiveness of the control strategy. The simulation results demonstrate that the control strategy significantly improves the dynamic response and robustness of the permanent magnet synchronous motor control system. Moreover, the predefined-time sliding mode disturbance observer effectively observes the ship’s time-varying load.
2025,47(11): 94-100 收稿日期：2024-8-14
DOI：10.3404/j.issn.1672-7649.2025.11.016
分类号：U664
基金项目：国家自然科学基金资助项目（52272377）
作者简介：胡庆南(1999-),男,硕士,研究方向为船舶电力推进系统
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