Quadrature Control Technique Of Hemispherical Resonator Gyro In Force-rebalance Mode

The hemispherical resonant gyroscope has the characteristics of long life,high reliability and high stability,and can be widely used in navigation and guidance of various carriers.In this paper,the harmonic oscillator control link of the hemispherical resonant gyroscope is studied deeply,and its control simulation model is designed according to the equivalent mathematical model of the hemispherical resonant gyroscope.The main work includes the design of the closed-loop orthogonal control link and its simulation analysis,as well as the design of its phase-locked loop control link,rate control link,amplitude control link and other related logic links.By building a simulation model to simulate the actual work of the hemispherical resonator,according to the results of the simulation analysis of its detailed research and analysis,for the future development of hemispherical resonant gyroscope to provide some practical reference.In this paper,the vibration principle of the resonator in the hemispherical resonant gyroscope is first analyzed.The vibration model of the resonator in two-dimensional space is given by the equivalent analysis of the vibration model,so as to analyze the specific principle of standing wave generating precession on the resonator.By constructing the mathematical simulation frame of the harmonic oscillator and analyzing the mathematical model of the harmonic oscillator motion,the source of the harmonic oscillator error and its mathematical form are given,and the error is simulated and analyzed by the simulation module,and then how to suppress the error effectively is analyzed.Then the two main working modes of hemispherical resonant gyroscopes are analyzed.In this paper,the relative control links of harmonic oscillator are introduced in detail.The practical significance and function of each control link are analyzed and simulated to analyze the operation of harmonic oscillator.Finally,the main orthogonal errors in the hemispherical resonator are simulated and analyzed.Based on the complex orthogonal drift in the hemispherical resonator,a feedback control method is designed to suppress the orthogonal drift.A valuable control strategy reference scheme for control technique and error suppression of hemispherical resonant gyroscopes is presented.