Control Valve Stiction Compensation - Part I: A New Method for Compensating Control Valve Stiction
| Autor: | Ashfaq Iftakher, Ahaduzzaman Nahid, M.A.A. Shoukat Choudhury |
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| Rok vydání: | 2019 |
| Předmět: |
Control valves
Computer science General Chemical Engineering 02 engineering and technology General Chemistry 021001 nanoscience & nanotechnology Industrial and Manufacturing Engineering Compensation (engineering) 020401 chemical engineering Control theory Control system Stiction 0204 chemical engineering 0210 nano-technology Reduction (mathematics) Energy (signal processing) |
| Zdroj: | Industrial & Engineering Chemistry Research. 58:11316-11325 |
| ISSN: | 1520-5045 0888-5885 |
| DOI: | 10.1021/acs.iecr.9b00334 |
| Popis: | Valve stiction is a hidden menace in process control loops. The presence of stiction in control valves limits the control loop performance. Compensation of its effect is beneficial before the sticky valve can be sent for maintenance. This work is the first of a two part study on control valve stiction compensation. This part proposes a novel stiction compensation method while the second part compares the performance of this proposed stiction compensation method with some of other compensation methods appeared in literature. The proposed compensator is developed based on reduction of control action and addition of an extra pulse of finite energy as required. A method for estimating an appropriate parameter for reducing controller action has been developed. The proposed stiction compensator has been extensively evaluated using MATLAB Simulink environment. The compensator has also been implemented in a pilot plant experimental set-up. It has been found to be successful in removing valve stiction induced osci... |
| Databáze: | OpenAIRE |
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