Effect of shock absorbers´ deformation on RLG´s bias temperature modeling

The deformation of shock absorbers has a great impact on gyro bias output during the system-level temperature modeling of gyro bias. In this paper, two ways of shock absorbers´ effect on gyro bias output are proposed: change of the Earth´s rotation component and slow movement of IMU apperceived by gyro. This paper analyzes the change of the Earth´s rotation component caused by the change of gyro´s sensitive axis. The effect of IMU´s slow movement is estimated. A method on how to place the gyro to weaken the impact of shock absorbers´ deformation is proposed. The effect of shock absorbers´ deformation on bias´ temperature model and accuracy of temperature compensation is analyzed through simulation.