Nonlinear Control Design for a Nonlinear Process – An Experimental Approach

Bhuvanendhiran, T and Thirunavukkarasu, I (2018) Nonlinear Control Design for a Nonlinear Process – An Experimental Approach. Journal of Advanced Research in Dynamical and Control Systems, 10 (07). pp. 1557-1562. ISSN 1943-023X

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Abstract

Most of the Industrial processes are equipped with PID controllers because of its simplicity in design. The ease of using PID controllers extensively increased day to day in almost all fields of engineering. Based on the design, PID controller gives better closed loop response for linear system, but lacks with respect to the nonlinear systems. Hence, to control a nonlinear system, an advanced control strategy is required. In this paper conical tank process has been considered and nonlinear control strategy is implemented to control the level of the tank. Control of conical tank level process is a challenging control task because of dynamic variation in the cross section area. Certainly, for nonlinear PI controller design, there were some tuning methods were exists. A new control algorithm is implemented, which extensively effective in controlling level of the tank by using error square type method for the design of nonlinear PI controller. With no change in control structure, this method can be adopted for huge numeral of nonlinear processes. Improved controller performances are observed when compared with direct synthesis (IMC PI tuning) and Skogestad (IMC PI tuning). Result analysis depicts the effectiveness of control algorithm.

Item Type: Article
Uncontrolled Keywords: Nonlinear PI controller, Error square controller Tuning, Skogestad PI controller, Nonlinear process
Subjects: Engineering > MIT Manipal > Instrumentation and Control
Depositing User: MIT Library
Date Deposited: 19 Oct 2018 08:57
Last Modified: 19 Oct 2018 08:57
URI: http://eprints.manipal.edu/id/eprint/152150

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