永磁同步电机的改进自抗扰控制策略研究

Improved Active Disturbance Rejection Control of Permanent Magnet Synchronous Motor

为减小系统参数变化、负载扰动以及环境变化等因素对控制性能的影响,对传统自抗扰控制策略进行了改进。首先,级联非线性扩张状态观测器(ESO)加强了控制器对扰动的观测能力,提高了控制精度;其次,将滑模控制(SMC)引入ADRC系统,进一步提高控制性能,同时使用Lyapunov函数对系统进行了稳定性分析。最后,在永磁同步电机(PMSM)实验平台进行了验证。实验结果表明,所提控制策略可以有效提高控制精度、缩短响应时间、增强系统的鲁棒性,具有良好的控制效果。

In order to reduce the impact of parameter changes,load disturbances and environmental changes on the control performance,the traditional active disturbance rejection control strategy is improved.Firstly,the cascaded nonlinear extended state observers(ESO)are used to enhance the disturbance observation ability of the controller,thus improving the control accuracy.Secondly,the sliding mode control(SMC)is introduced into the ADRC system to improve the control performance,and the analysis of the system stability is carried out based on the Lyapunov function.Finally,the proposed controllers are verified on the experimental platform of a permanent magnet synchronous motor(PMSM).Experimental results show that the proposed control strategy can effectively improve the control accuracy,reduce the response time,and enhance the system's robustness,providing good control performance.