Abstract: The optimal estimator of system state for networked control systems without full state information is presented. The design of stochastic optimal controllers of networked control systems with output feedback is also presented. The paper proves that optimal controllers can stabilize the exponentially mean square of networked control systems. Lastly, the simulation based on the networked controlled batch reactor is studied. The simulation results show that the proposed methods are correct and effective.

Key words: state estimate, networked control systems, network induced delay, output feedback