Compensating circuit for gyrocompass

Abstract

The invention relates to a compensating circuit for a gyrocompass, which comprises a demodulation module and a compensating module, the demodulation module comprises an analog switch circuit, a transformer, a voltage stabilizing circuit, a first inverter, a second inverter and a filter circuit, the analog switch circuit comprises a first normally-open switch, a second normally-open switch, a third normally-open switch and a fourth normally-open switch, the compensation module comprises an integral circuit and a torquer, the integral circuit comprises an integral input end, an integral output end and the torquer, and the torquer comprises a coil used for applying compensation torque. According to the compensating circuit for the gyrocompass, disclosed by the invention, the compensating circuit for the gyrocompass can apply compensating current to a torquer without receiving speed information and latitude information, binding unbalance data and programming by adopting a pure hardware circuit, so that a main shaft of the gyrocompass returns to the meridian plane.

Description

technical field [0001] The invention relates to the field of navigation and navigation, in particular to a compensation circuit for gyro compass. Background technique [0002] For a long time, the gyro compass, as a navigation instrument that can accurately find the geographic north direction, has been widely used on various ships and has become the main instrument for marine navigation. [0003] A high-speed rotating gyroscope is installed in the gyrocompass, and the main axis of the gyroscope can stably point to the meridian plane of the earth. Due to the influence of principle factors (such as velocity error and latitude error) and manufacturing factors (such as the unbalance produced by the gyroscope assembly process), the main axis of the gyroscope will deviate from the meridian plane, resulting in heading errors. [0004] In order to overcome the heading error caused by the above factors, usually the gyro compass will receive the speed information output by the log, t...

AI Technical Summary

Problems solved by technology

[0005] Due to the need to receive speed information, latitude information, and binding unbalance data, most compensation circuits currently use a microprocessor as the core device, and at the same time need to be equipped with an appropriate interface circuit, current drive circuit, etc. The circuit is complex, involving many components and costs high, low reliability

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