基于动态柔性变结构的控制系统优化设计

 含有积分环节的PID控制使得电机控制系统响应缓慢,加之换向过程电感的作用,相电压波形与理想方波有较大差距,导致转矩脉动大,转速响应缓慢.通过改变柔性变结构的控制策略,并结合稳定的线性系统,提出了一种基于动态柔性变结构的控制系统优化设计方法.仿真实验结果表明,采用动态柔性变结构控制较传统PID控制具有更好的控制性能,转速响应快,转矩脉动小.动态柔性变结构控制适用于其他控制系统的优化设计.

Optimized Design of Control System Based on Dynamic Soft Variable Structure

PID control which has integrator,causes motor system response slow.Differences are shown between waves of phase-voltage and ideal square wave related to the influence of inductance in reversing process,leading to large torque ripple and slow response of speed.An optimized design of control system based on dynamic soft variable structure control is presented,by changing the control strategy of soft variable structure,and combining the stable linear system.Results of simulation experiments show that dynamic soft variable structure control compared PID control is with better performance,fast in speed response and small torque ripple.Dynamic soft variable structure control also can be applied to optimize the design of other control systems.