Electrostatic gyro servo testing device based on turntable position working mode

Abstract

The invention provides an electrostatic gyro servo testing device based on a turntable position working mode. The electrostatic gyro servo testing device comprises a turntable body, a turntable control cabinet, a shell rolling control circuit, a gyro control cabinet and a gyro testing cabinet, wherein the turntable body is used for loading a gyroscope; the turntable control cabinet performs motion closed-loop control over the turntable body according to a real-time angular position deviation signal of a turntable; the shell rolling control circuit is connected with a gyroscope shell to control the a gyroscope body to do periodic rotation motion relative to the gyroscope shell; the gyro control cabinet is connected with the gyroscope, the turntable control cabinet and the shell rolling control circuit to monitor and control the gyroscope, to acquire shell rolling angle signals and gyro deflection angle signals and to generate angular position increment instructions of turntable motion according to the gyro deflection angle signals; the gyro testing cabinet is connected with the turntable body and a turntable control cabinet to establish a gyro drift error model according to angular position data of inner and outer ring axes of the turntable body and output a gyroscope drift error testing result. The electrostatic gyro servo testing device has the advantages of being convenient to debug, strong in robustness and high in reliability.

Description

technical field [0001] The invention relates to the technical field of inertial instrument error testing, in particular to an electrostatic gyro servo testing device based on a turntable position working mode. Background technique [0002] The electrostatic gyroscope is a free-rotor gyroscope without the torque device in the traditional rotor gyroscope, so the traditional force feedback method cannot be used to test the drift error model. Usually, the servo method is used for accuracy testing. During the test, the gyroscope is installed on the servo test turntable, and the rotor is in a free working state. Due to the drift error of the gyroscope, the position of the rotor will change. The turntable is controlled by the servo to make the turntable track the gyroscope in real time. Therefore, the trajectory of the rotor of the electrostatic gyroscope can be characterized by the trajectory of the turntable, so as to realize the test of the drift error of the electrostatic gyros...

AI Technical Summary

Problems solved by technology

Therefore, the performance of the motion closed-loop control system in the turntable servo mode is greatly affected by the performance of the gyroscope angle output sensor. The inconsistent performance of the output sensor will also cause the performance change of the servo control system. When the gyroscope under test is replaced, the parameters of the servo system need to be readjusted, and the system robustness is not good.

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