卫星姿态测量系统的故障诊断技术

Fault Diagnosis Technology for Satellite Attitude Measurement System

以挠性陀螺仪、红外地平仪和太阳敏感器组成的对地观测卫星的姿态测量系统为对象，研究了该系统传感器硬件故障的诊断技术．在给出系统方程的基础上，对传感器的故障作了假设，并对该系统进行基于广义简化滤波器（多重滤波器）故障诊断方法的应用．该方法利用测量系统自身的卡尔曼滤波器，故只需增加有限的计算量．结果表明，这一方法有较好的实时性和较高的故障检出率，有利于卫星姿态测量系统可靠性的提高和高精度卫星的研制．

A kind of technology of fault diagnosis for the sensors' hardware faults was studied. The technology is intended for an attitude measurement system of a remote sensing satellite, which consists of dynamically tuned gyroscopes (DTG), infrared earth sensors and solar sensors. The formulas of the system were given. The types of the sensors' faults were supposed. A method of fault diagnosis based on generalized simply Kalman filter (multiple filter) was applied for the system. As the Kalman filter is used for processing attitude information, the additional calculating amount of the method is limited. It is shown that this method is good in real time detecting and has a high rate of fault detection. The research is useful for improving the reliability of satellite attitude measurement system and for developing a high accuracy satellite.