Variable structure controllers for unstable processes. (August 2015)

• Record Type: Journal Article
• Authors: Ablay, Günyaz
• Is Part Of: Journal of process control. Volume 32(2015:Aug.)
• Page Start: 10
• Page End: 15
• Publication Date: 2015-08
• Subjects: Variable structure systems -- Process control -- Sliding mode -- Auto-tuning -- PID control -- Optimization; Process control -- Periodicals; Fabrication -- Contrôle -- Périodiques; Process control; Periodicals; Electronic journals; 660.281
• DOI: 10.1016/j.jprocont.2015.04.017
• Languages: English
• ISSNs: 0959-1524

Abstract

Highlights: A variable structure controller is developed for unstable systems. Robust and high-performance responses are obtained. ITAE based optimal parameter tuning algorithm is provided. A direct auto-tuning method is developed. Existing control software and hardware can directly be used in applications. Abstract: A variable structure control (VSC) method for unstable industrial processes is proposed. The proposed control method is able to provide a highly satisfactory system performance and to tackle with robustness issues of the processes in the presence of uncertainties. An ITAE-based numerical tuning algorithm for acquiring optimal control parameters, and a direct auto-tuning mechanism for the proposed controller are also provided. The performance of the proposed VSC method is illustrated on some unstable process models including a continuous stirred tank reactor (CSTR), in order to show its effectiveness, validity and feasibility.