Research of Gyro Case Rotating Monitor Technique
Huang Wei · Shipbuilding of China · 2002
The gyro case rotating monitor technique is to increase the system accuracy and to decrease the gyro drift and accelerometer error in stabilized gyrocompass. This paper introduces the application background, presents detailed discussion on the structural features, the basic operation principle, the signal flow and stabilized loop, and the specific implementation method. The paper also discusses the angular velocity choice, analyses the system error of the stabilized gyrocompass, and then calculates the angular velocity of the rotating case in typical situation. The results show that shis technique can efficiently modulate the gyroscope drift,and greatly promote the gyroscope precision by one to two orders of magnitude consequently. It is shown that relatively high system precision is attainable by using the gyroscope with lower precision in the stabilized gyrocompass.