基于新型趋近律的永磁同步电机积分滑模控制

为了提升永磁同步电机(PMSM)调速系统动态品质,提出了一种基于新型混合趋近律的积分滑模控制算法。在传统指数趋近律基础上,引入了双曲正切函数、终端吸引子和基于系统状态变量幂函数的自适应因子,并结合积分滑模面,提高了系统趋近速度自适应调节能力和干扰抑制能力,有效削弱了抖振水平。基于所提出的趋近律,设计了PMSM新型混合趋近律积分滑模速度控制器,通过仿真完成了与传统PI算法控制性能的对比分析。仿真结果表明,新型趋近律速度滑模控制器具有更好的速度跟踪精度,抗负载扰动性能更好,抖振量非常小,鲁棒性强。

Integral-Type Sliding Mode Control for Permanent Magnet Synchronous Motor Based on Novel Reaching Law

In order to improve the dynamic quality of permanent magnet synchronous motor (PMSM) speed regulation system, an integral sliding mode control algorithm based on a novel hybrid reaching law is proposed. Based on the conventional exponential reaching law, the hyperbolic tangent function, terminal attractor and adaptive factor based on power function of system state variables are introduced. Combined with integral sliding mode surface, the adaptive adjustment ability and anti-disturbance ability of the system approaching speed are improved, and the chattering level is limited. Based on the proposed reaching law, a new hybrid reaching law integral sliding mode speed controller for PMSM is designed. The control performance of the controller is compared with the traditional PI algorithm through simulation. Simulation results show that the new reaching law speed controller has better anti-load disturbance performance, very small chattering and strong robustness.