直流脉宽调速系统滑模变结构控制  

Sliding Mode Variable Structure Control of DC Pulse Width Speed Regulation System

作　　者：吴秀珍[1] 邵雪卷[1] 

机构地区：[1]太原科技大学电子信息工程学院,山西太原030024

出　　处：《计算机仿真》2015年第5期403-406,共4页Computer Simulation

基　　金：山西省研究生教改项目(20132050);太原科技大学研究生教改项目(2012400)

摘　　要：在直流电机调速系统优化控制的研究中,针对常规滑模变结构控制的双闭环直流调速系统在添加负载扰动后转速响应存在静差的问题。为解决上述问题,提出了考虑扰动在内的转速环滑模变结构控制方案。由于扰动补偿作用的加入加大了电流给定的抖动,使回路电流脉动较大,在上述设计的基础上,在控制器输出添加了滤波器,有效的解决了上述问题。通过MATLAB仿真验证后,在dSPACE DS1103单板系统的支持下,将所设计的控制器与实际电机相连,通过在线调节参数,获取理想曲线。实验结果表明所设计的滑模控制器(smc)具有较好的鲁棒性,系统转速无超调,电流较平滑,抗扰能力较强,为直流电机调速系统优化提供了参考。Static error exists in double-closed-loop dc speed control system with common sliding mode control when there is load disturbance. To deal with this, a sliding mode control scheme for speed loop considering outside disturbance was put forward. For the reason that the compensation of the disturbance increases the chattering of the given current and makes current fluctuation bigger in the loop, a filter was added to the output of the controller on the basis of the above design, which can solve the problem effectively. The validity was validated by MATLAB simulation, and with the support of dSPACE DS1103 veneer system, the designed controller was connected to the actual mo- tor. Then through online parameters adjusting, the ideal response curve was acquired. The experimental results show that the designed controller has good robustness, the speed control system has no overshoot, the current waveform is relatively smooth, and the immunity ability is strong.

关 键 词：滑模变结构控制 转速环 滤波器 单板系统 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]