Title: Application of fractional order PID in controlling constant current

Authors: Zebiao Shan; Yaowu Shi; Lanxiang Zhu

Addresses: College of Communication Engineering, Jilin University, Changchun 130022, China ' College of Communication Engineering, Jilin University, Changchun 130022, China ' School of Electronic Information, Changchun Architecture and Civil Engineering College, Changchun, 130607, China

Abstract: In this paper, a fractional order PID control scheme is proposed for the water filling and drainage system of a rubber dam, which is a typical nonlinear, time-varying, variable structure system. First, mathematical model of the system of filling and draining off water of the rubber dam was established; theoretically proved that the fractional order controller has good robust properties for the variable structure system; and then in a practical project, a fractional order PID controller is designed for the constant current control of filling and draining off water from the rubber dam, and achieved good control effect. Lastly, this paper gives the actual control curve of constant current using the fractional order PID controller. Practice proves that the proposed control scheme is efficient and the system possesses good static, dynamic performance and certain robustness.

Keywords: fractional order PID control; constant current control; water filling; drainage systems; rubber dams; variable structure system; VSS; mathematical modelling.

DOI: 10.1504/IJRIS.2015.072940

International Journal of Reasoning-based Intelligent Systems, 2015 Vol.7 No.3/4, pp.145 - 151

Received: 04 Jul 2014
Accepted: 19 Oct 2014

Published online: 09 Nov 2015 *

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