永磁同步电机积分滑模观测器控制

Integral Sliding Mode Observer Control of Permanent Magnet Synchronous Motor

对永磁同步电机观测器控制进行研究,针对传统滑模观测器存在控制精度低、系统抖振较大的不足,设计了一种永磁同步电机积分滑模观测器控制。积分滑模控制具有控制精度高、系统抖振小的特点。积分滑模观测器可以有效提高电机控制精度,增强控制系统抗干扰能力。采用饱和函数代替符号函数进行滑模控制律设计,降低控制系统固有抖振,使滑模控制动态性能提高。通过仿真验证了积分滑模观测器控制策略的可行性。

The observer control of permanent magnet synchronous motors was studied.For the problems of low control precision and large system chattering of traditional sliding mode observer,an integral sliding mode observer control of permanent magnet synchronous motor was designed.Integral sliding mode control has the characteristics of high control precision and small system chatter.The integral sliding mode observer can effectively improve the motor control precision and enhance the antiinterference ability of the control system.The saturation function was used instead of the symbol function to design the sliding mode control law,which can reduce the inherent chattering of the control system and improve the dynamic performance of sliding mode control.The feasibility of the integral sliding mode observer control was verified by simulation.