文献类型：期刊文献

中文题名：阀门粘滞在线检测及粘滞补偿的KNOCKER方法改进研究

英文题名：KNOCKER-Compensation with Floating Parameters for Valve Stiction

作者：朱亚平[1];夏春明[1];张亮[1];周侃恒[1]

机构：[1]华东理工大学机械与动力工程学院,上海200237

年份：2014

卷号：38

期号：8

起止页码：41

中文期刊名：液压与气动

外文期刊名：Chinese Hydraulics & Pneumatics

收录：CSTPCD;;北大核心:【北大核心2011】；

基金：国家自然科学基金(60974061)

语种：中文

中文关键词：阀门粘滞;非线性故障;粘滞检测;KNOCKER补偿;参数自调整

外文关键词：valve stiction; nonlinear fault; fault detection; KNOCKER-compensation; parameter self-adjusting

摘要：对阀门粘滞所引起的非线性故障进行检测和补偿方法研究。提出了一种基于OP-PV图上斜率变化,并通过设置适当阈值的方法来判断阀门是否存在粘滞故障。在基于KNOCKER补偿法的基础上,对控制输出叠加补偿信号的关键参数进行自调整改进,使控制回路得到有效补偿并使回路输出的限幅振荡现象基本消失。仿真分析及实验案例结果均验证了阀门粘滞检测和改进补偿方法的有效性。
This study investigates the detection and compensation of non-linear valve faults caused by stiction,and proposes an approach to detect the existence of valve stiction according to the slope change detection on OP-PV curves with proper threshold setting.Based on the common KNOCKER signal compensation method,a method to self-adjust the KNOCKER signal parameter is introduced to achieve for stiction compensation and to eliminate control loop limit-cycle oscillation simultaneously.The results of simulation test and real experiment case study show the feasibility of the proposed methods on the detection and compensation of valve stiction.