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This paper originates from space project two-axis antenna control system. In the paper, the writer formulates this system based on Micro-Computer control, and studies operating principle, design technology, and project problem of the two-axis antenna control system.In the paper, after analyzing the gross structure of the two-axis antenna control system, it is introduced how to design the digital control circuit and control program. The system adopts80C32MCU as the main controller, hybrid Rare-Earth permanent magnet stepper motor as the execution component, This article analyzes the structure and the work principle of two-phase hybrid stepping Motor. The80C32MCU has been validated, it has high precision, and the motor runs stably. The experiment result indicates that the system reaches the qualities required, It runs smoothly and safety. The system has high precision and high credibility.The sinusoidal vibration test, random vibrate test, impulse test and acceleration test of this system are all favorable. Either in test process or after test, the system works well, and each performance index are all stable and reliable.
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