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What is the Error and Elimination Method of Gyro Compass

Latitude error or damping error

Cause: the vertical damping method is used.

Elimination method:

(1) External compensation method — calculate the size and symbol of the latitude error according to the latitude error formula, and deduct it from the reading of the gyrocompass;

(2) Internal compensation method — calculate and output the signal transformed according to the latitude error rule, and apply the compensating torque to the gyrocompass.

Velocity error

Cause: The motion of the base causes the motion of the principal axis of the gyrocompass to change and cause pointing error.

Elimination method:

(1) Speed error correction table;

(2) External compensation method — using mechanical simulation method to calculate the error value according to the expression of the velocity error and deduct the error value from the heading reading;

(3) Internal compensation method — calculate and output regular velocity error compensation torque, and implement compensation for gyro compass.

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