Optimization Design of Rebalance Loop for Rate System of Dynamical Tuned Gyroscope

Abstract

The bandwidth of rate system of dynamical tuned gyroscope affects the dynamic performance of system. Second-order optimization model is used to compensate the rebalance loop of gyroscope, and uses dominant pole to determine the cut-off frequency of second-order system inertial element. Additional zero cancels the pole of gyroscope in low frequency, and use additional pole to cancel the zero of gyroscope in high frequency. The optimization of parameters for rebalance loop and redesigned to circuits make the bandwidth increase to 80 Hz from 35 Hz, and the max measuring rang is enlarged from 70deg/s to 170deg/s, and the output noise is reduced to 0.7 mV(RMS) from 5 mV(RMS). It not only improves bandwidth and measuring range, but also reduces output noise. Simulating validates the dynamic performance of system, and experimentation tests the dynamic and static performance of system. The results of experimentation and simulation verify the rationality and validity of design.