Lqg Control Tv Seeker System

The TV-seeker system is a crucial part of the TV-guided bomb. The former design was based on the classical control theory. Although the system satisfied performance basically and achieved a certain control precision, it was likely to be further optimized.Firstly, a kind of controller was designed in the dissertation which was adopted the idea of model reference adaptive control theory. The former system turned to a new one by the output feedback control. The new system was used as a reference model and the output of the reference model was used as the anticipant output. Anticipant output was compared with actual output and then the error signal was gained. The error signal was magnified and added to the input. The simulation experiment showed that the controller improved the speediness. Two kinds of realizing reference model were also given in the dissertation.Secondly, the optimal control problem of TV-seeker system which was disturbed by the random number was researched in the dissertation. The research was studied within the linear system which had quadratic performance index and sampled Gaussian white noise. It also could be called LQG problem. The influence of the parameters, Q and R, on the controller design was analyzed. On time-domain and frequency-domain aspects, steady and transient performances of the control system were considered to designing the LQG controller. The control results were presented in simulations. Compared with the former system, the simulation results indicated that the controlled TV-seeker system might improve the transient performance, steady and disturbance rejection.The two sorts of controller which have been designed in the dissertation are of significant applied value, and they can also provide certain theory base and technology support.