Flexible gyroscope unlocking detection method for platform type inertial navigation system

Abstract

The invention belongs to the technology for detection of an inertial platform signal of a platform type inertial navigation system and relates to a flexible gyroscope unlocking detection method for the platform type inertial navigation system, which is used for detecting a platform type inertial navigation system fault signal. Two series sampling resistors are led out between a correcting stage and a double frequency wave trap on a servo loop board in the platform type inertial navigation system; a signal is led out to an A / D (Analogue / Digital) sampling channel on an A / D board in the platformtype inertial navigation system between the two resistors; and the A / D sampling channel transmits the sampled signal to a computer of the platform type inertial navigation system for judging if the signal complies with a normal working voltage range. The method solves the problem that the platform is inclined to cause work exception because the fault cannot be reported due to the gyroscope unlocking, reduces the fault rate of the system and can detect a fault signal of the gyroscope unlocking within 100ms, so that the influence of a navigation error caused by the platform inclination on the flying safety is greatly reduced, thereby improving the reliability of the inertial navigation system and strengthening the fighting capacity of the army in our country.

Description

technical field [0001] The invention belongs to the inertial platform signal detection technology of a platform type inertial navigation system, and relates to a platform type inertial navigation system flexible gyro out-of-lock detection method for detecting fault signals of the platform type inertial navigation system. Background technique [0002] The platform inertial navigation system sometimes has a platform tilt phenomenon during the flight, which causes the system to report failures and other problems. After analysis, such problems are generally due to various reasons that cause the gyro to shift gears, resulting in abnormal gyro output signals and causing platform attitude changes. . [0003] When the platform is tilted due to gyro shifting, the accuracy of the parameters output by the inertial navigation will be greatly reduced as time goes by (the current related detection procedures need more than ten minutes or more to report the fault), especially the pitch ang...

AI Technical Summary

Problems solved by technology

[0002] The platform inertial navigation system sometimes has a platform tilt phenomenon during the flight, which causes the system to report failures and other problems. After analysis, such problems are generally due to various reasons that cause the gyro to shift gears, resulting in abnormal gyro output signals and causing platform attitude changes.

[0003] When the platform is tilted due to gyro shifting, the accuracy of the parameters output by the inertial navigation will be greatly reduced as time goes by (the current related detection procedures need more than ten minutes or more to report the fault), especially the pitch angle of the aircraft. Large errors in output and roll angles will reduce the mission reliability of the aircraft, and seriously affect the flight safety of the aircraft

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