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The tracking control and chaotic synchronization problem for a class of continuous time uncertain chaotic system is studied. A fuzzy sliding mode variable structure control approach is proposed. A controller based on the fuzzy sliding mode variable structure approach is designed and the stability of the control system is proved by Lyapunov stability theory. Using this controller, two chaotic systems...
To solve the non-linear system control problem, a new self-adaptive fuzzy controller with two stages variable universe is proposed. In place of the conventional function models to obtain the contraction-expansion factors, the novel fuzzy control algorithm adjusts its universe by another fuzzy controller according to the values of the input-output variable and a fuzzy control rules list. The simulation...
This paper investigates the problem of generalized synchronization of two hyperchaotic systems via fuzzy control method. Based on the exact T-S fuzzy models of these two hyperchaotic systems, a simple fuzzy controller is designed to realize the robust synchronization of the two nonidentical hyperchaotic systems. The stability criteria of the synchronization error systems are derived by applying Lyapunov...
The dynamics of pH process is highly nonlinear, time-varying with change in gain of several orders. It is very difficult to investigate the dynamic behavior of such systems using conventional modeling techniques. An effective approach is to partition the available data into subsets and approximate each subset by a simple piecewise linear model. Fuzzy clustering can be used as tool to partition the...
This paper proposed a hierarchical variable universe fuzzy controller for the control problem of double-tank system. A hierarchical variable universe fuzzy controller is able to reduce the computation complexity of ordinary fuzzy controller, while achieve an efficient, accurate control. Simulation examples and comparison with a PID controller show that the proposed controller controls the system much...
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