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Title: A simple test to confirm control valve stiction
Authors: Shah, Sirish L.
Choudhury, M. A. A. Shoukat
Kariwala, Vinay
Douke, Hisato
Takada, Haruo
Keywords: DRNTU::Engineering::Chemical engineering
DRNTU::Engineering::Electrical and electronic engineering::Control and instrumentation::Control engineering
Issue Date: 2005
Source: Choudhury, M. A. A. S., Kariwala, V., Shah, S. L., Douke, H., Takada, H. (2005). A Simple Test to confirm Control Valve Stiction. 16th IFAC World Congress.
Abstract: Stiction is a common problem in the widely used spring-diaphragm type control valves in the process industry. Several methods are available for detecting stiction in control valves. After detection of stiction, a test is required to confirm that the valve in question is indeed suffering from stiction. This paper presents a simple closed loop test, based on changing only the controller gain, for confirming the presence of stiction. The method does not require that the loop be put in manual, which can otherwise upset the plant. The usefulness of this test is demonstrated through simulation studies and an industrial application.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SCBE Conference Papers

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