Dahlin控制器的根轨迹研究  

The Study on Root Locus of Dahlin Controller

作　　者：董宇[1] 朱学峰[1] 

机构地区：[1]华南理工大学自动化科学与工程学院,广州510641

出　　处：《计算技术与自动化》2003年第4期28-30,共3页Computing Technology and Automation

摘　　要：本文研究了针对一阶时滞对象的Dahlin控制器的根轨迹。该根轨迹以闭环系统时间常数为参数。研究表明,随着闭环系统时间常数的减小,除了静止的极点外,控制器的所有的极点都将远离原点;其中,位于实轴上方的极点沿逆时针方向运动;位于实轴下方的极点沿顺时针方向运动。可以通过根轨迹的性质来研究算法的鲁棒性。In this paper, root locus of Dahlin controller for a first-order process with dead time is discussed. The time constant of the close-loop system is considered as the parameter of the root locus. The study shows that if the time constant of the close-loop system is decreased, all the poles of the controller except the static pole will move away from the origin. Also, the poles located above the real axis will move anticlockwise; the poles located below the real axis will move clockwise. Robust analysis can be done through the properties of root locus.

关 键 词：DAHLIN控制器 根轨迹 闭环系统 DAHLIN算法 传递函数 鲁棒性 

分 类 号：TP271[自动化与计算机技术—检测技术与自动化装置] O231[自动化与计算机技术—控制科学与工程]