Design And Implementation Of Address-driving System For Micro-thruster Array

The Micro-thruster array has many characters such as small volume, light weight, low power consumption, small impulse, high precision, etc, is an effective way to solve the satellite precise control. Address-driving system requires a combination of requirements based on the Micro-thruster of the control system and it provides an accurate ignition control for Micro-thruster unit, besides, it also has an important significance at high-precision satel ite attitude and orbit control.Takeing 10×10 Micro-thruster array as the object, the main part of this paper aims at the Micro-thruster array address-driving system and the Micro-thruster driving circuit for further research which content mainly includes:1. Drewing up the attitude control equation of the Micro-satellite which uses Micro-thruster as propulsion system. Studying on characteristics of Micro-thruster arrays with different arrangements and descripting method for information of Micro-thruster`s location. Designing the al ocation algorithm for Micro-thruster.2. Determining the communicating method, the address method of the address system and some related design paramaters. Building a hardware platform of address system based on FPGA, and using Verilog-HDL language to write communication and address program, it also makes analysis of system performance through the program sequential logic simulation and functional simulation tests and reached a feasibility of the address system.3. In consideration of particular requirements of Micro-thruster array unit such as high-speed, reliable address and large power, it designs a driving ignition circuit of Micro-thruster, shows out the design of 10×10 array driving ignition circuit by structure-enlarging and makes simulation analysis and tests of its major properties.4. Completing the linkage debugging of address system and driving circuit, and has carried on the test to the system main performance. The main technical specifications are: Output is 1.68 W, system software and hardware response time is 18.32?s, time delay proportionality factor is 0.005.