航空光电成像平台角位置陀螺和角速率陀螺的稳定效果分析  

Stabilization properties of airborne imaging platform based on position gyro and rate gyro

作　　者：沈宏海[1] 刘晶红[1] 张葆[1] 戴明[1] 贾平[1] 魏忠和[1] 熊经武[1] 

机构地区：[1]中国科学院长春光学精密机械与物理研究所

出　　处：《光学精密工程》2007年第8期1293-1299,共7页Optics and Precision Engineering

基　　金：国防科技预研基金资助项目(No.1040603)

摘　　要：研究了角速率陀螺稳定平台在目标跟踪时瞄准线始终围绕视场中心做约2 Hz晃动的现象,理论推导及数值分析认为引起这一现象的原因与光电稳定平台的静态力矩刚度为0、隔离度仅为71.4 dB有关。采用基于角位置陀螺的光电稳定平台,其静态力矩刚度为1 732 Nm,隔离度提高到126 dB,可以有效地消除这种晃动。Generally,a photoelectric imaging platform is used to isolate the carrier movement and set the platform stability relative to the inertial space. The high frequency jitter phenomenon of the target in the image center occurred in the rate gyro based platform is researched during tracking. The theoretical derivation and numerical analysis indicate that the reason is the torque rigidity of 0 and isolation degree of 71.4 dB for the rate gyro based platform, while the position gyro based platform has greater torque rigidity and isolation ability , which can greatly suppress this jitter.

关 键 词：机载平台 稳定平台 陀螺 力矩刚度 隔离度 

分 类 号：V241.53[航空宇航科学与技术—飞行器设计]