光电系统中挠性陀螺闭环和开环应用效果的对比分析

Effectiveness Comparison between Close Loop Mode and Open Loop Mode for Flexible Gyroscope of Electro-optical System

阐述了挠性陀螺的闭环和开环两种应用方式,并从力矩刚度的角度分析了系统在两种模式下的稳定性。理论分析表明,在陀螺闭环应用时,系统的力矩刚度会受到陀螺带宽的限制;在陀螺开环应用时,系统的力矩刚度不受陀螺带宽的限制而会大大增加。仿真与试验结果表明,陀螺开环应用效果要好于陀螺闭环应用效果,提高了系统的力矩刚度,改善了系统的稳定性。该结果证明了理论分析的正确性,对工程应用具有一定的指导作用。

Two different application modes of flexible gyroscopes, i.e. open loop and close loop, are presented. The stability of a system in both application modes is analyzed in terms of torque rigidity. In theory, the torque rigidity of a system is limited by the bandwidth of the gyroscope when it operates in the close loop mode. In the open loop mode, the torque rigidity of the system is not limited by the bandwidth of the gyroscope and can be increased greatly. The simulation and test result shows that the open loop mode is more effective than the close loop mode for a gyroscope. It can improve the torque rigidity and stability of the system. This result validates the correctness of the theoretical analysis.