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A data-driven model for valve stiction

Choudhury, M.A.A.S.; Thornhill, N.F.; Shah, S.L.; (2003) A data-driven model for valve stiction. Presented at: ADCHEM 2003, Hong Kong. Green open access

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Abstract

The presence of nonlinearities, e.g., striction, hysteresis and backlash in a control valve limits the control loop performance. Striction is the most common problem in spring-diaphragm type valves, which are widely used in the process industry. Though there have been many attempts (EnTech, 1998; Gerry and Ruel, 2001; Horch and Isaksson, 1998; Taha et al., 1996; Piipponen, 1996; McMillan, 1995) to understand the stiction phenomena and model it, there is a lack of a proper model which can be understood and related directly to the practical situation as observed in a real valve in the process industry. This study focuses on the understanding, from real life data, of the mechanism that causes stiction and proposes a new data-driven model of stiction, which can be directly related to real valves. It compares simulation results generated using the proposed model with industrial data.

Type: Conference item (Presentation)
Title: A data-driven model for valve stiction
Event: ADCHEM 2003
Location: Hong Kong
Dates: 11-14 January 2004
Open access status: An open access version is available from UCL Discovery
Language: English
Keywords: stiction, stickband, deadband, hysteresis, backlash, control valve, static friction, viscous friction, nonlinearity, slip jump, control loop performance
UCL classification: UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/486
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