A simple method for detecting valve stiction in oscillating control loops

被引：81

作者：

Singhal, A ^{[1
]}

Salsbury, TI ^{[1
]}

机构：

[1] Johnson Controls Inc, Controls Res Grp, Milwaukee, WI 53202 USA

来源：

JOURNAL OF PROCESS CONTROL | 2005年 / 15卷 / 04期

关键词：

control; stiction; oscillation diagnosis; valves (mechanical); actuators;

D O I：

10.1016/j.jprocont.2004.10.001

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

This paper presents a simple and new method for detecting valve stiction in an oscillating control loop. The method is based on the calculation of areas before and after the peak of an oscillating signal. The proposed method is intuitive, requires very little computational effort, and is easy to implement online. Analytical results are derived to show the theoretical basis of the new method and field results are presented to show its effectiveness on real world control loops. (c) 2004 Elsevier Ltd. All rights reserved.

引用

页码：371 / 382

页数：12

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