Langtao Yan, Guangyin Liu, Yiran Ren
Chongqing Jiaotong University, 400074, Nan'an, China.
Sci Rep. 2025 Jul 2;15(1):23246. doi: 10.1038/s41598-025-05613-w.
The paper addresses issues of chattering and long transition time in permanent magnet marine main propulsion motors at medium and high speeds. It introduces a variable boundary layer function to suppress chattering, a phase-locked loop with a signal suppressor to enhance rotor position recognition accuracy, and a new integral sliding mode function to improve system state convergence speed, making the control system more robust. Additionally, a Lyapunov function is constructed to demonstrate algorithm stability. The designed control strategy is simulated and verified using Matlab/Simulink software under various operating conditions. The results demonstrate that compared to traditional sliding mode controllers, the proposed control strategy offers advantages in the medium and high-speed working region of the main propulsion motor, including fast convergence speed, reduced chattering, minimal steady-state error, and strong robustness. This research carries theoretical significance for applying sliding mode control theory to permanent magnet marine main propulsion motors.
本文探讨了永磁船舶主推进电机在中高速运行时的抖振和过渡时间长的问题。它引入了可变边界层函数来抑制抖振，带有信号抑制器的锁相环来提高转子位置识别精度，以及新的积分滑模函数来提高系统状态收敛速度，使控制系统更具鲁棒性。此外，构建了李雅普诺夫函数来证明算法的稳定性。所设计的控制策略在各种运行条件下使用Matlab/Simulink软件进行了仿真和验证。结果表明，与传统滑模控制器相比，所提出的控制策略在主推进电机的中高速工作区域具有优势，包括收敛速度快、抖振减小、稳态误差最小以及鲁棒性强。本研究对于将滑模控制理论应用于永磁船舶主推进电机具有理论意义。
