Abstract:

Microwave radiometer imager is used for detecting cloud images in satellite for weather forecasting. Its mechanical scanning?component part is a bias parabolic reflector antenna with a large diameter, rotating at a low speed. Vibration amplitude is an important parameter of the microwave radiometer imager, overvibration will directly affect the satellite attitude control. It is proven that the vibration is mainly caused by dynamic unbalance. An insitu experiment for low speed dynamic balance of microwave radiometer imager is done. The results show that low speed dynamic balancing insitu is an effective method to reduce vibration of the microwave radiometer imager.

Key words: vibration and wave, microwave radiometer imager, low speed dynamic balance insitu, removal of initial bending

摘要： 探测气象分析卫星云图的星载微波成像仪，其机械扫描成像机构大孔径偏置抛物面天线具有非对称和转速低的特点。如果振动过大，将直接影响到卫星的姿态控制。分析表明动不平衡是造成天线振动的主要原因。对成像仪进行了现场整机动平衡，减小了成像仪的振动。

关键词: 振动与波, 微波成像仪, 低速现场动平衡, 去除初始弯曲量