Aircraft Wheels Brake Test Bed Computer Control System Design And Research

This thesis is derived from the second stage of the technical improvement project of the Aircraft Tyre Wheel and Brake Test Dynamometer which focuses on the design and realization of the computer control system. The main effort of this paper is on the design of position control and load control.Firstly, the thesis finished the design of the second stage of technical improvement scheme,including selection of control system, connection of network and hardware configuration.Next,the mathematical model of Position&Load control system is obtained from the theory analysis and system identification, Then the classical PID control scheme are applied to this model and the parameters and simulations of classical PID control are given as the result. Considering the variety of the model parameters and great disturbance .the H-infinity controller is used, the result indicates that the H-infinity controller is better than the PID controller. The semi-physical simulation system is established to test the position and load control system, the results show that the established mathematical model is reasonable and the controller meet the demand of the whole system design.