Статическая балансировка цилиндрических резонаторов волновых твердотельных гироскопов

Abstract

Mass debalance of resonators of the cylindrical vibratory gyroscopes substantially influences the performance of these devices. In particular, it can lead to splitting of the resonator natural frequency in the operating mode. An algorithm for balancing the first harmonics of such anomalies for the metallic cylindrical resonator is proposed. The technology is based on the immersion of resonator parts into the chemical bath. The balancing is performed by removing masses at certain locations of the resonator surface by the electrochemical etching. The required law of mass removal from the resonator surface is achieved by analytically evaluated angles and depths of its inclined immersion into the bath (Fig. 1). To remove the harmonic number N it is necessary to immerse the resonator into the bath N times with its sequential rotation by the angle 2π/N around the symmetry axis. The proposed technique is precise and at the same time simple to implement. The surface mass removal algorithm can be generalized to balancing of other types of resonators, for instance, the hemispherical resonator.