H infinity control for DC servo motor in the network environment

This paper is to study a category of linear discrete-time system which is short time delayed and data dropout measurable. The paper selected DC servo motor as the controlled object to construct a network control system. Assuming that the system states can be measured and the data dropout meet the Bernoulli distribution of given probability. By using Lyapunov stability theory, sufficient conditions are derived which make the loop-closed system meet with the mean square exponential stability and specified H infinity performance indicators. The method of designing a state feedback H infinity controller is given. The parameters of the controller are obtained by solving the linear matrix inequalities. Simulation results show that the controller design is effective and feasible.