动力调谐陀螺速率测量回路的解耦与实现

分析了动力调谐陀螺作为捷联惯性系统的角速率测量元件在实现陀螺测量解耦的再平衡回路设计方法时，按综合系统要求、陀螺实际运转特点、解耦条件及工程实施等有关问题，设计了主回路及解耦回路各电路的传递函数，并对陀螺－再平衡回路系统进行仿真，结果表明，解耦设计是有效的，它为其工程实施提供了依据。

On Decoupling of Two Measuring Signals of Dynamically Tuned Gyro

Chinese aeronautical engineers have recently become urgently interested in the reduction of unacceptable errors in rate measurement of vehicle frame system due to interaction of two measuring signals of dgnamitaly tuned gyro, especially in strapdown INS (inertial navigation system). We have done in- depth study of Bird's 1987 paper 2] and apply our research results to a certain type of Chinese gyro with preliminary success.Our preliminary success comes from deriving eq. (11) needed for decoupling of the above- mentioned two measuring signals . Considering eq. (11), we derive eq. (16) for designing the addition of a co- axial decoupling loop to its torquing loop in order to reduce errors due to interaction of two measuring signall. In the derivation of eq. (16), we consider very carefully how to avoid the following frequently encountered troubles: resonance caused by rotation frequency, double rotation frequency, nutation frequency, etc.Simulation results of a certain type of Chinese gyro are presented in Fig. 4: Fig'.4(a) for gyro with added decoupung loop, and Fis. 4(b) for it without. From Figs. 4(a) and 4(b),we can see that the addition of decoupling loop reduces the errors by about 80%.