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Dr. Mustafa Al-Naser

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Dr. Mustafa Al-Naser

Dr. Mustafa Al-Naser

Lead Research Engineer, Yokogawa Saudi Arabia

Dr. Mustafa Al-Naser is a lead research engineer working with Yokogawa Saudi Arabia. He Joined Yokogawa in 2008 and worked in SCADA solutions until 2010 and then joined the R&D Center of Yokogawa Saudi Arabia at Dhahran Techno-Valley as research engineer for collaborative research projects with Academia and Industry.

Control Valve Stiction Compensation: Online Adaptive Approach

Digitalization

Dr. Sami El-Ferik

Abstract: Control loop performance monitoring is essential to process industries due to the substantial value that they can add in terms of higher quality, low operational cost and high asset availability. Valve stiction is one of the main problems that the process industry is facing, and is usually handled by performing costly corrective maintenance, which may result in loss of production. In addition, the desire to keep operation running with unavailability of bypass lines/valves forces the operation to continue with a defect valve until the next scheduled maintenance, which may affect product quality and operation cost. This waiting period can take years. A recent study showed that the percentage of defective valves ranges between 3% to 10% with average of 3.6%. Hence, if there is a way to implement an adaptive solution to handle valve stiction while maintaining Safety and Quality until next planned maintenance, then considerable cost and effort can be saved. This paper proposes an advanced online stiction compensation approach to improve the performance of the industrial control loops. To evaluate the performance of the proposed approach, both simulation and experimental investigations have been carried out. Results show the excellent performance of the proposed compensator through a substantial reduction in process variability, valve movements, and energy needed for stiction compensation.

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