An indexing mechanism of a fiber optic gyro north finder

Abstract

The invention discloses a translocation mechanism of a fiber-optic gyroscope north seeker. The mechanism comprises: a fluted disc seat fixedly connected with the rotating platform of the north seeker; a power driving assembly used for providing driving force for the reciprocating rotation of the fluted disc seat in four measure positions; a calibration assembly having a power connection with the power driving assembly and used for realizing the rotary calibration of the fluted disc seat in the circumference under the action of the provided driving force; and a positioning assembly used for positioning the translocation mechanism after the rotation of the translocation mechanism to any one of the four measure positions. The power driving assembly drives the fluted disc seat to drive the rotating platform to rotate, and the translocation mechanism is positioned through the positioning assembly after utilizing the calibration assembly to calibrate to rotate the translocation mechanism to the measure position, so the rotation of the rotating platform and the positioning and locking when the translocation mechanism rotates to each measure position are realized. In the invention, the four-position translocation, positioning and locking of the translocation mechanism are realized in a rocking arm hand-operated input mode, and the translocation mechanism has a large load bearing capability, a high positioning precision and a high revolution precision.

Description

technical field [0001] The invention belongs to the field of an optical fiber gyro north finder, and in particular relates to an indexing mechanism of an optical fiber gyroscope north finder. Background technique [0002] The fiber optic gyro north finder is a commonly used inertial navigation instrument at present. It uses the fiber optic gyro to sense the angular velocity component of the earth's rotation, and calculates the angle between the angular velocity reference axis and the true north direction to realize north finding. The indexing mechanism is an important part of the fiber optic gyro north finder. It is used to realize the indexing control of the fiber optic gyroscope, and its precision must meet the accuracy of the fiber optic gyroscope north finder. [0003] The current fiber optic gyro north finder based on four positions performs a north finding operation at four positions of 0°, 90°, 180°, and 270° on a circle on the horizontal plane, and finally calculates...

AI Technical Summary

Problems solved by technology

[0004] Chinese patent document 201110402777.7 discloses a fiber optic gyro north finder indexing mechanism based on the four-position north-finding method. The mechanism realizes the rotation by rotating the motor and locking the motor. Position, lock, unlock function, need to provide a reliable power supply, there are certain restrictions on the conditions of use

Chinese patent document 200810116865.9 discloses an indexing mechanism of a fiber optic gyroscope teaching test north finder. This mechanism can realize the function of indexing various positions through manual input, but it cannot realize the locking and unlocking functions at the same time. At the same time, its load weight is limited. The positioning accuracy is not high, only for teaching use

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