Design of Gyroscope’s Case Rotation Device

In order to improve the precision of gyroscope,case rotation is usually applied to automatically compensate drift error torque relative to the case.The paper introduces a kind of Brushless DC-Servomotor’s numeric control system and makes comparison with Russian Д-15 analog control system.At the same time,a special conductive device is designed between moving module and immobile shell.The result of experiment shows that the conductive device has longevity of service and high reliability.