直流调速系统滑模变结构控制设计

Variable structure Control of the sliding Mode for a DC Motor Drive System

分析了直流调速系统变结构控制中存在的问题，指出了实际控制系统的准滑动模态和理想滑动模态之间的差别，提出了一种直流调速系统滑模变结构控制器结构和参数的设计方法。最后针对全数字直流调速系统作了仿真，仿真结果表明，系统的动态和静态性能优良。

This paper is concerned with a new variable structure control method for eliminathing thestatic error due to the torque load in variable structure control of the sliding mode for a DCmotor drive,The difference between the quasi-sliding mode of an actual system and the idealsliding mode is analyzed.In order to suppress serious vibration of the quasi-sliding mode andshorten the dynamic process,a design method for the controller parameters of the variablestructure speed control system is proposed.Results of simulation show that the dynamic pro-cess of the system is short and the system can operate without oscillation,overshooting and statlc error.