An adaptive frame control system and method for improving the bandwidth of a control moment gyroscope

Abstract

An adaptive frame control system and method for improving the bandwidth of a torque gyroscope, the system includes an adaptive double-loop PI controller, a speed observer and a bearing aging degree judgment module; the adaptive double-loop PI controller is used to control the low-speed frame motor control of the torque gyroscope , the adaptive dual-loop PI controller is based on the traditional current loop and speed loop dual-loop PI controller, in which the gain parameters in the current loop and speed loop PI controllers have adaptive adjustment functions; the speed observer is used for observation control The difference between the relative actual speed of the torque gyro low-speed frame motor and the relative command speed is converted into a criterion for adaptive control; the bearing aging degree judgment module is used to judge the frictional resistance of the bearing after long-term operation The gain parameters of the adaptive double-loop PI controller will be adaptively adjusted according to the above-mentioned changes in the frictional resistance torque.

Description

technical field [0001] The invention relates to a frame control system and method for increasing the response bandwidth of a control moment gyroscope, which is suitable for frame control of control moment gyroscope products. Background technique [0002] The control torque gyro is the core executive component for the rapid maneuvering and stability of the spacecraft attitude. It is composed of high-speed components and low-speed frames. High ratio, fast response, high precision output torque. [0003] Since the low-speed frame shafting of the control moment gyroscope adopts solid-lubricated four-point bearings, the frictional resistance torque of the low-speed frame shafting of the control moment gyroscope will gradually increase with the long-term in-orbit operation of the control moment gyroscope. This is due to the fatigue wear of the solid lubricating film caused by the cyclic rolling of the steel balls and the continuous loss of the solid lubricating film caused by the...

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Problems solved by technology

Patent CN 105786036 B proposes to use the scheme of adding feedforward control to achieve the effect of improving the torque control accuracy, but does not provide a scheme to realize the improvement of the response bandwidth under the condition of ensuring the control accuracy

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