摘要
针对一般工程设计中只考虑挠性陀螺的进动性而未考虑陀螺的章动的问题，从理论上计算了陀螺章动频率，并实测了某微型挠性陀螺输出特性数据。针对输出特性中3种高频成分和低频包络，采用了二级陷波电路以及力矩器组件两种改进措施，并进行了分析与验证。试验结果表明，改进后陀螺章动频率和40Hz包络很快收敛，且使挠性陀螺角位置输出噪声衰减达15dB以上。最后将陀螺应用到某战车光电稳定平台中，平台与载体的隔离度由原来的1～2nail提高到0．3mil，达到了改进的目的。
Aiming at the problem of only considering the precession of the flexible gyro without the nutation in engineering design, the nutation frequency is computed theoretically, and the output characteristics data of a miniature flexible gyro are measured. Both the second-level trap eircuit and the torquer components are used to improve the output characteristics of three main high-frequency components and the low-frequency envelope. Such method applied to a miniature flexible gyro is analyzed and verified. Results show that the nutation fre- quency and the envelope at 40 Hz of the improved gyro can converge quickly, and the output noise attenuation of the flexible gyro angular position is more than 15 dB. Finally, the improved gyro is used in the photoelectric stable platform of a tank, and the isolation between platform and carrier is reduced from 1 ~ 2 rail to 0.3 mil, the purpose of improvement is achieved.
出处
《测控技术》
CSCD
北大核心
2013年第11期155-158,共4页
Measurement & Control Technology
关键词
挠性陀螺
章动频率
力矩器
陷波器
隔离度
flexible gyro
nutation frequency
torquer
notch filter
isolation
