基于扩张状态观测器的改进型积分滑模结构设计  

Design of improved integral sliding mode structure based on extended state observer

作　　者：袁帅[1] 陈家新[1] 周宇[1] YUAN Shuai;CHEN Jiaxin;ZHOU Yu(Micro Motor Laboratory,Donghua University,Shanghai 201620,China)

机构地区：[1]东华大学微特电机研究室,上海201620

出　　处：《传感器与微系统》2021年第6期107-109,共3页Transducer and Microsystem Technologies

摘　　要：为了提高永磁同步电机(PMSM)速度环控制性能,在积分滑模的基础上进一步消除的抖动问题,提高速度控制的稳定性及负载抗性。使用扩张状态观测器将负载及其干扰扩张为状态变量,将扩张状态补偿到控制量中,从而提高系统的静态特性。同时对积分状态变量环节中引入比例状态变量,加快积分滑模的反应时间,提高控制系统的动态特性。最后进行仿真实验与传统的PI控制进行系统仿真负载抗性对比,给定速度稳定性实验对比。结果表明:相对传统的控制方法,所设计的提高了系统的动态和静态性能。In order to improve speed loop control performance of permanent magnet synchronous motor(PMSM),chattering problem is further difficult to eliminate on the basis of integral sliding mode, and stability of speed control and load resistance are improved.The extended state observer is used to expand the load and its interference into a state variable, and the expansion state is compensated to the control quantity, thereby improving the static characteristics of the system.At the same time, the proportional state variable is introduced into the integral state variable link to accelerate the reaction time of the integral sliding mode and improve the dynamic characteristics of the control system.Finally, the simulation experiment and the traditional PI control are used to compare the system simulation load resistance, and the speed stability experiment is compared.The results show that the dynamic and static performance of the system is improved compared to the traditional control method.

关 键 词：永磁同步电机 扩张状态观测器 滑模控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]