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STUDY ON ON-ORBIT MICRO-VIBRATION MONITORING AND ADAPTIVE CONTROL SYSTEM

机译：在轨微振动监测与自适应控制系统研究

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摘要

Micro-vibration is a critical factor influencing detecting precision of optical remote instrument at satellite. Moving parts like reaction wheels, Control Moment Gyros (CMG) and optical mechanical scanner are sources of micro-vibration at satellite, whose vibration responds at sensitive parts like remote detector, optical system via structure of satellite, resulting micro-vibration of these parts and the decrease of detecting precision. In order to decrease the micro-vibration of optical remote instrument, an on-orbit closed-loop adaptive control system has been designed, which based on on-orbit vibration monitoring technology and vibration active control with piezoelectric actuator. The control system involves several critical technologies such as low noise amplifying for weak signal, real-time processing of huge vibration data and adaptive control algorithm, features high control precision, wide vibration suppression band and capability of adaptive control with frequency of vibrations, which achieves effective suppression for micro-vibration of critical part on satellite and raising the detecting precision of optical remote instrument.
机译：微振动是影响卫星光学远程仪器检测精度的关键因素。诸如反作用轮，控制力矩陀螺仪（CMG）和光学机械扫描仪之类的运动部件是卫星的微振动源，其振动会通过卫星的结构对诸如遥感器，光学系统等敏感部件产生响应，从而导致这些部件和部件产生微振动。检测精度下降。为了减少光学遥测仪的微振动，设计了一种基于在轨振动监测技术和压电致动器振动主动控制的在轨闭环自适应控制系统。该控制系统涉及微弱信号低噪声放大，大量振动数据的实时处理和自适应控制算法等多项关键技术，具有控制精度高，振动抑制带宽，振动频率自适应控制的能力，可以实现有效抑制了卫星关键部位的微振动，提高了光学遥测仪的检测精度。

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