Detection of Stiction in Level Control Loops

被引：10
|
作者：
Brasio, Ana S. R. [1 ]
Romanenko, Andrey [1 ]
Fernandes, Natercia C. P. [1 ]
机构：
[1] Univ Coimbra, Dept Chem Engn, Fac Sci & Technol, CIEPQPF, Coimbra, Portugal
来源：
IFAC PAPERSONLINE | 2015年 / 48卷 / 08期
关键词：
pattern recognition; level control loop; stiction detection; Yamashita Method; VALVE STICTION; QUANTIFICATION;
D O I：
10.1016/j.ifacol.2015.09.004
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Stiction is a petsistent control valve problem in the process industry responsible for oscillations and, consequently, losses of productivity. Its early detection and separation from other oscillation causes is an important issue in the industrial context. One of simple and effective approaches to detect stiction has been proposed by Yamashita that employed a pattern recognition principle. While its performance is good in flow control loops, it fails to properly diagnose other types of processes. The present work details a new approach that enables the application of the Yamashita pattern recognition principle 1,0 level and other integrating process control loops. A simulation study demonstrates its capabilities in clean and noisy environments and analyzes the impact of the noise on the diagnostic performance. (C) 2015, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved.
引用
收藏
页码：421 / 426
页数：6
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