| The purpose of this thesis is to improve the GEC electrical cabinet of the Aircraft Tyre Wheel and Brake Test Dynamometer. The GEC Electrical Cabinet is the equipment which controls the drums and includes the electrical inertial simulation control module, the speed control module, the energy compensation module, the electricity control module and the speed testing module.Firstly, the paper introduces the principle of the Aircraft Tyre Wheel and Brake Test Dynamometer, the structure of the GEC electrical cabinet and the targets of system improvement. Secondly, it introduces the solution of the system improvement. An energy control method is proposed. The transfer function of electricity controller is identified by use of the method of least square and the energy compensation model is created. Finally, it introduces the energy compensation model.To create energy compensation model is difficult because energy losing is effected by many factors and the energy-losing model of factors is hard to find. Treating the total losing energy due to every factor as the losing due to a inverse moment, an energy compensation model is introduced to compute the inverse moment and to control the electricity controller in order to adjust the electrical moment and compensate losing energy .A digital simulation system and a semi-physical simulation system are setup to analyze the rationality of the energy compensation model. It shows that the result of the simulation meets the specifications. Thus, the validity of arithmetic is proven. |
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