基于Matlab工具箱Rltool的控制系统校正设计

Calibration Design of Control System Based on Rltool of MATLAB Toolbox

在自动控制系统设计中,一般需要进行校正。论文详细分析了在根轨迹滞后校正中,如何借助于Matlab中的rltool组件进行控制系统校正装置的设计。根据系统给定的性能指标设置限制条件,确定主导极点的位置,并查看输出响应是否符合设定条件,以此来确定校正环节的传递函数。此方法直观明显,可以在原根轨迹中随意增加零极点,寻找合适的主导极点位置,节省了大量的计算和编程工作量,且通过仿真实例验证了该方法的有效性。

In the design of automatic control system, it needs to be adjusted. This paper analyzes in detail how to use the rhool component of Matlab to correct the design of the root locus lag correction. According to the given performance index of the system, the limiting condition is determined to determine the position of the dominant pole, and to see whether the output response meets to the set conditions, so as to determine the transfer function of the correction link. This method is intuitive and obvious, and the zero pole can be added to the original root locus to find the proper position of the dominant pole, which saves a lot of computation and programming effort. The effectiveness of the method is verified by simulation example.