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.
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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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