| With the development of society and modern information technology, and more popular the satellite TV receive, people are eager to receive satellite TV program in mobile means. The key point to MVV (Mobile VSAT Vehicle) is to quick position the satellite antenna.The thesis is based on the MVV satellite TV receive system, it mainly discusses the whole scheme of the electric design and the software and hardware system of microcontroller unit. The auto-positioning controller of movable satellite antenna uses the MCU as the control core, adapting the MVV antenna positioning method by using the improved H bridge motor drive circuit to control the DC motor, driving the two-axis antenna pedestal. The paper discusses the following aspects: the main design of the auto positioning controller of movable satellite antenna, the controlling method with considering the weight affect of antenna to the DC motor, the algorithm of the antenna positioning and motor controlling, the software and hardware design of the antenna controller, the software design of the Universal PC Serial Debug Assistant which is used in the online debug and configuration setting.The whole system has been debugged, the hardware controller and the software system has been tested to run reliably and stably, and the reliable positioning of the antenna is realized and the expectable performance is achieved, it's proved that the whole scheme of the system is available and valid. |
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