Laser gyroscopic compass shock mitigation system

Abstract

The invention relates to a laser gyroscopic compass shock mitigation system which comprises a box. An IMU support is arranged in the box and provided with a laser gyroscope, the left circumference and the right circumference of the outer side of the IMU support are connected with an inner frame through dish-shaped rubber shock absorbers, the upper end and the lower end of the inner frame are connected with an outer frame through bowl-shaped rubber shock absorbers, and the outer frame is fixed to the box. By means of the laser gyroscopic compass shock mitigation system, an inertia device, namely a laser gyroscope can be protected to normally vibrate in severe environment, and the angular speed of a carrier can be accurately measured; and on the other hand, influences of external stimulation such as vibration impact on a compass can be isolated or reduced, the good damping and anti-impact effects are achieved, the accurate course and posture can be provided, work is stable and reliable, and overall disassembling and maintaining are convenient.

Description

technical field [0001] The invention relates to a laser gyro compass vibration reduction system. Background technique [0002] The gyro used in the laser gyro compass is a machine-shaking laser gyro, which is sensitive to the angular velocity of the optical path relative to the inertial space through the Segnac effect of the ring optical path. There is a locking phenomenon, that is, it is not sensitive to small rotational speeds when any bias frequency measure is adopted, so the machine shakes The laser gyro uses a special jitter mechanism to make the resonator produce a sinusoidal angular velocity. Therefore, it is necessary to protect this jitter so that the laser gyro can work normally; , in order to enable the compass to output stably, it is necessary to isolate or reduce the influence of external excitation on it. However, the existing laser gyro compass vibration reduction device generally adopts one-level vibration reduction, and there are two ways, one is external v...

AI Technical Summary

Problems solved by technology

However, the existing laser gyro compass vibration reduction device generally adopts one-level vibration reduction, and there are two ways, one is external vibration reduction, that is, the metal shock absorber is directly installed on the bottom of the box without a shock absorber inside; the other is external vibration reduction. One is internal vibration damping, that is, the IMU bracket is directly fixed on the box through ordinary rubber shock absorbers, and no shock absorbers are installed outside the box

These two damping structures affect the normal vibration of the laser gyroscope when the ship is stimulated by the outside, such as strong wind, waves, collisions and impacts. ; On the other hand, it is easy to cause damage to the internal structure of the laser gyroscope, thus affecting the life of the laser gyroscope

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