Disturbance suppression for swing arm in spaceborne spectrograph via variable structure control

作者：Shi Yu Feng^*; Zhou Chun Jie; Qin Yuan Qing; Wang Yong Ji

来源：Control and Decision, 2011, 26(12): 1872-1876.

• ARM systems
• Control methods
• Conventional PI control
• Disturbance suppression
• High precision
• Integral sliding mode variable structure control
• Interference models
• Microvibrations
• Non-linear relationships
• Optical path difference
• Space-borne
• Stability requirements

For the swing arm control of high precision spaceborne spectrograph, an integral sliding mode variable structure control(ISMVSC) is presented to deal with the disturbance problems of micro-gravity and micro-vibration. Firstly, the interference model of micro-gravity and micro-vibration on the swing arm is given. Then, according to the stability requirements of the optical path difference velocity(OPDV), the control method for the swing arm is designed based on the nonlinear relationship between the motor';s angular velocity and its OPDV. Finally, the performance of disturbance suppression for the swing arm system is simulated. Compared with the conventional PI control method, the simulation results show that the proposed ISMVSC is effective for guaranteeing the system';s robustness and inhibiting the disturbance introduced by the micro-gravity and micro-vibration in space.

• 出版日期2011