氙离子火箭发动机配电调节分系统的时序控制

The Timing Sequence Control of the Power Distribution and Control Subsystem of Xenon Ion Rocket Engine

本文从理论和实验两个方面对氙离子火箭发动机配电及控制系统进行了研究，并设计出以８０３１单片机为核心组成的微机实时监控系统。设计中，为了减少加热电源和阴极本身的热冲击，阴极电源分五档控制；考虑到束流电源的瞬变特性，为避免对发动机和电源产生不利的影响，采用了慢起动特性；对于在发动机工作过程中有时出现的过载、灭弧、高压打火或短路等现象，可以及时地发现并作出实时的处理和控制。

In this Paper, both theoretical and expenimental investigations about the power distribution and control system of a xenon ion rocket engine are described. A microcomputer real-time monitoring system with single-chip processor 8031 as core is designed. phenomena such as overload, arc-extinguishing, high-roltage spark or short circuit etc occurred sometimes during operation process of the engine can befound in time and given a real-time Processing and control by the timing sequence control unit. In design, the output voltages of the power supply for cathodes are controlled withfire steps in order to reduce hot impact to heater POwer supply and cathodes themselves. In consideration of the transient characteristic of the beam power suPPly, a slowly starting characteristic is employed to avoid undesired influences on the power supplies and the engine.