Industrial analysis of gyro stability and precision assembly

Abstract

Gyro is a new type of widely used micro-inertial sensor, which can realize high-precision, small-size, and anti-interference angular velocity measurement and is widely used in aerospace, platform drilling, autonomous driving, wearable devices, and cell phones. The study first analyzes the influence of the angle of control torque on the stability of the gyro and deduces the relationship between the gyro rotational inertia, spin angular velocity, feed angular velocity, and stability. Then, through the research of industrial gyro products research status, the factors affecting the precision of the gyro elaborated on the key technologies that need to be broken through in the process of gyro precision assembly and combined with the sequential stacking method to realize the gyro in the industrial close assembly. The results show that both the shape factor and scale factor are the influencing factors of gyro stability. The shape and position error of each part, as well as the coupling of the error, cause the uneven force on the motor shaft, the local stress concentration, and, therefore, local deformation, which ultimately leads to the offset of the motor shaft center, and the influence of the shape and position coupling error on the assembly precision of the gyro.