A controllable vibration reduction device and method for a machine-shaking laser gyro inertial navigation system

Abstract

The invention relates to a controllable vibration reduction device and a vibration reduction method for a machine-shaking laser gyro inertial navigation system, belonging to the field of inertial navigation, including an inertial sensor installation frame, an S-shaped folding beam vibration reduction device, and a folding beam vibration reduction device installation seat and mounting base. The present invention has the following technical effects: the present invention can decouple the inertial sensor assembly in the direction of radial translation and rocking motion, reduce the complex vibration response of the inertial sensor assembly in the resonance region, and improve the vibration isolation performance of the inertial sensor assembly; The invention measures, controls and eliminates the deformation of the shock absorber in real time, and further reduces the error caused by the shock absorber between the inertial sensor assembly and the carrier; the deformation of the S-shaped folded beam shock absorber is input in real time In the machine-shaking laser gyro inertial navigation system, the angular velocity and acceleration signals of the inertial sensor assembly measured by the inertial device are integrated and processed, so as to obtain the high-precision real-time attitude and position output of the carrier.

Description

technical field [0001] The invention relates to a controllable vibration reduction device and a vibration reduction method for a machine-shake laser gyro inertial navigation system, belonging to the field of inertial navigation. Background technique [0002] Due to its high precision, small size, high reliability and low temperature sensitivity, laser gyroscopes are increasingly becoming the preferred angular rate sensor in inertial navigation systems. In order to eliminate the inherent "locking error" of the laser gyroscope, the machine-shaking laser gyroscope uses a mechanical shaking component to make the angular rate sensitive to the laser gyroscope away from the locking area through periodic shaking. However, it is inevitable that the jitter of the mechanical shaking components of the machine-shaking laser gyro will have adverse effects on other sensitive devices in the inertial navigation system; at the same time, various vibrations generated by the motion of the carri...

AI Technical Summary

Problems solved by technology

The eight-point suspension installation method used in Document 3 uses a passive vibration damping device. The vibration damper is a rubber damper, and its consistency is difficult to ensure, and the vibration damping of the damper is a nonlinear low-pass filter. poor adaptability to complex application environments with a large dynamic range, and it is difficult to meet the requirements of the inertial navigation system for real-time motion attitude measurement

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