基于二阶滑模算法的无刷直流电机转速控制研究

摘要

研究了二阶滑模控制方法,将其引入无刷直流电机调速系统中.根据螺旋算法控制规律,设计了滑模控制器,使电机能够跟踪位置指令,快速响应转速调节.二阶滑模能够规避传统滑模的抖振现象,并且可以改善电机调速系统抗外界干扰的能力.仿真和试验结果表明,提出的方法可以使电机输出转速动态响应快,调节时间短,稳定匀速运行,验证了文中理论分析的正确性与有效性.%Second-order sliding mode was proposed to design the speed controller system of brushless DC motor (BLDCM),and its controller was established based on twisting algorithm to track position command and adjust speed.Furthermore,the chattering problem of traditional sliding mode could be eliminated by using second-order sliding mode,which also reduced outside disturbances,improving the speed control perfornance of servo system.Simulation and experimental results showed that the method was presented which could keep the dynamic response quick,shorten settling time and run at constant speed stably.And the validity and corrective of the theoretical analysis were verified in the end.