摘要
趋近律控制方法能够提高滑模运动的动态品质,本文针对传统的指数趋近律存在一定缺陷,提出了一种基于时变切换增益的指数趋近律方法。设计了永磁同步电机电流滑模控制器,在切换增益中加入修正因子,使得切换增益在趋近运动以及接近滑模区时能够保持较小的值,且能够随着系统状态在滑模运动过程中收敛;在控制器模型中建立状态方程,并对滑模面、趋近律进行了设计,详细介绍了控制律推导过程。最后通过仿真实验验证了该方法的有效性。
Reaching law control method can improve the dynamic performance of the sliding mode motion.This paper for traditional index reaching law has some defects, puts forward a kind of method ofexponential approach law based on time-varying handover gain. Current sliding mode controller designfor permanent magnet synchronous motors, joined in a switch gain correction factor, makes switchinggain during reaching movements and approaches the sliding mode can keep small value and sliding stagewith convergence system state; The state equation is established in the controller model , and the slidingmode surface, reaching law was designed, introduced the derivation processare of control law in detail.Finally, the rationality and validity of the design is verified by simulation experiment.
作者
徐海刚
段朝伟
Xu Haigang;Duan Chaowei(Department of Automatic Control,Henan Mechanical and Electrical Engineering College,Henan Xinxiang 453002,China)
出处
《科技通报》
北大核心
2016年第7期121-124,129,共5页
Bulletin of Science and Technology
关键词
指数趋近律
永磁同步电机
滑模
仿真
exponential approach law
permanent magnet synchronous motor
sliding mode
simulation
