WSEAS Transactions on Systems
Print ISSN: 1109-2777, E-ISSN: 2224-2678
Volume 18, 2019
Sliding Mode Control of Nonlinear Coupled Tank System
Authors: ,
Abstract: Sliding mode control is a powerful approach for controlling nonlinear and uncertain systems. This paper presents the liquid level control of the nonlinear-coupled tank system using sliding mode control technique. At first, a static sliding mode control technique is proposed to control level height of the second tank. According to the chattering problem that happened with static sliding mode control, integral sliding mode controller is suggested to reduce the chattering problem, as well as guarantee the asymptotic stability of the feedback system. The closed loop system is simulated using MATLAB Simulink to demonstrate the characteristic performance of the developed control approaches. Therefore, the simulation results indicate that the proposed control schemes work very well. While, the integral sliding mode control has a better performance for the rejection of disturbance, as well as the system’s parameters variation.
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Keywords: Static sliding mode control, Integral sliding mode control, Coupled tank system, Level control, Nonlinear system, Modeling
Pages: 35-44
WSEAS Transactions on Systems, ISSN / E-ISSN: 1109-2777 / 2224-2678, Volume 18, 2019, Art. #5