详细信息
文献类型:期刊文献
中文题名:一种PI闭环辨识新方法
英文题名:A New Closed-loop Identification Method of PI
作者:陈永云[1];刘爱伦[1];陈成良[1]
机构:[1]华东理工大学信息与工程学院,上海200237
年份:2002
卷号:9
期号:6
起止页码:82
中文期刊名:控制工程
外文期刊名:Control Engineering of China
收录:CSTPCD;;CSCD:【CSCD2011_2012】;
语种:中文
中文关键词:PI;闭环辨识;时滞二阶模型;控制器;工业过程控制
外文关键词:closed-loop identification; second order model plus dead time; controller
摘要:提出了一种闭环辨识的新方法。通过时域法得到的闭环传递函数与假定过程模型所得的闭环传递函数在相角为 90°和 1 80°两个点上的模和相角的关系 ,从而辨识出假定模型中的未知参数 ,仿真实验的结果表明 ,该方法是可行的 ,并且有较好的精度。
A new method of closed-loop identification was proposed. Transfer function of closed-loop can be gotten through time-domain method or from proposed process model,then unknown parameters are identified in proposed model through relation of gain and phase shift at two points(one phase shift is 90° ,the other is 180°) in closed-loop transfer function.Simulation results reveal that this new method is feasible and can get a good accuracy.
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