Feedback fuzzy control for quantized networked systems with random delays

This paper investigates the problem of feedback fuzzy control design for networked systems involving both random measurement and actuation delays and subject to quantization and random packet dropout. It is assumed that system state or output signal is quantized before being communicated. The paper focuses initially on an observer-based output feedback fuzzy controller design and then derives a state feedback controller as special case. Sufficient conditions for the existence of an admissible fuzzy controller are established to ensure the exponential stability of the resulting closed-loop fuzzy system. Simulation experiments on a lab-scale four-tank system to demonstrate the applicability of the designed fuzzy control algorithm.