Abstract:

A novel type of H_∞ control based on the disturbance-observer is proposed fora class of networked control systems. These disturbances includetwo parts: one disturbance in the input channel is generated by exogenous system and the other disturbance is due to the bound H₂ norm. The new disturbance-observer is designed for the disturbance in the input channel, by using the theory of Lyapunov stability and LMI methods, and a H_∞ law is obtained based on the estimate. Fainally, an example is given to demonstrate the effectiveness of the results.

Key words: networked control system; disturbance-observer; H_∞ control