Nonlinear adaptive control using the Fourier integral and its application to CSTR systems

Abstract--This paper presents a new nonlinear adaptive tracking controller for a class of general time-variant nonlinear systems. The control system consists of an inner loop and an outer loop. The inner loop is with a fuzzy sliding mode control that is used as the feedback controller to overcome random instant disturbances. The stability of the inner loop is designed by the sliding mode control method. The other loop is with a Fourier integral-based control that is used as the feedforward controller to overcome deterministic type of uncertain disturbance. The asymptotically convergence condition of the nonlinear adaptive control system is guaranteed by the Lyapunov direct method. The effectiveness of the proposed controller is illustrated by its application to composition control in a continuously stirred tank reactor system.

• Type: Journal
• Year: 2002
• Where: TSMC
• Authors: Huaguang Zhang, Lilong Cai
• Keywords: Control System, Inner Loop, Sliding Mode Control, TSMC 2002