摘要
针对感应电动机运行过程中易受参数变化和不确定扰动因素的影响,造成系统的稳定性和精确性降低,将动态滑模控制策略引入电机的调速系统中。通过构造新的切换函数,使滑模控制中的不连续项转移到定子交轴电流的一阶导数项中去,从而削弱系统的抖振。仿真结果验证了该方法较传统的PID速度环控制具有更优异的动静态性能和鲁棒性,且大大抑制了滑模变结构设计中易产生的抖振缺陷。
Aimed at the motor parameter variations and uncertain disturbances in the running process of induction motor,a dynamic sliding mode control（SMC） method was proposed in the AC speed regulation system.A new switching function was constructed in order to transfer the discontinuous terms into the first order derivative of stator torque current,eliminating the system chattering.Simulation results validate that the proposed method has a better dynamic and static performance and robustness,compared with the traditional PID speed regulator.
出处
《微特电机》
北大核心
2010年第6期62-64,共3页
Small & Special Electrical Machines
关键词
动态滑模
感应电动机
切换函数
抖振
dynamic sliding mode
induction motor
switching function
chattering
