| The antenna driver is the key part of the secondary planet system. In this paper full-digital ac-servo control system based on DSP(Digital Signal Processor) is adopted to control antenna rotating ,which improves greatly system reliabity and stability.This paper mainly studies the antenna servo control system: system composition, control scheme , the hardware and software design. The system uses the Permanent Magnet Synchronous Machine as the driver motor based on the idea of polygonal flux linkage locus and the Permanent Magnet Brush-less motor is as the momentum balance motor by means of speed and current loop in order to track driver motor precisely and rapidly. The harmonious control of driver motor and balance motor is realized by making full use of the DSP hardware resource and complicated programmable logic device. The software design is composed of C and assembly language to realize motor control arithmetic of polygonal flux linkage locus.The full-digital servo control system of satellite antenna has already passed the whole satellite payload system test. The result shows that the system has good speed stability ,high precision scan period and can work reliably under the simulative space environment. |
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