一种新型自抗扰控制算法研究

Research on a New Active Disturbance Rejection Control Algorithm

为提高传统PI控制的抗扰动性能,提出一种新型自抗扰控制算法,将其运用于永磁同步电机自抗扰控制。首先,针对转速环的外部负载扰动问题,采用自抗扰控制器对外部负载扰动进行实时补偿,提高转速跟踪性能;其次,针对电流环的内部参数摄动问题,采用自适应观测器对电机参数摄动量进行实时估计,提高电机参数摄动下的电流环稳定性;最后,采用对比实验方法测试新型自抗扰控制算法性能。实验结果表明,相对于传统PI控制算法,新型自抗扰控制算法对于外部负载扰动和内部参数摄动具有更强的鲁棒性。

In order to improve the disturbance rejection performance of traditional PI control,a new active disturbance rejection control(ADRC)algorithm is proposed,which is applied to the active disturbance rejection control of permanent magnet synchronous motor(PMSM).Firstly,for the external load disturbance of the speed loop,the ADRC is used to compensate the external load disturbance in real time to improve the speed tracking performance;Secondly,for the internal parameters perturbation of the current loop,the adaptive observer is used to estimate the motor parameters perturbation in real time to improve the current loop stability under the motor parameters perturbation;Finally,the comparative experiment is used to test the performance of the new ADRC algorithm.The experiment results show that the new ADRC algorithm is more robust to external load disturbance and internal parameters disturbance than the traditional PI control algorithm.