Abstract: Considering wind-induced vibration of the feed supporting system with cables for the optomechatronics design project of next generation large spherical radio telescope, a novel ER damper is designed to realize the additional damping control of this vibration. The model of wind is first developed to implement this design and simulations. The damping force model of the designed ER adaptive damper is developed in detail, and the strategy of the additional damping control is proposed. The numerical simulation results have verified the validity of the designed adaptive ER damper to suppress the wind vibration of the feed supporting system, and the maximum suppression of the wind-vibration can be reached 50% of the original amplitude without ER damper. The favorable wind-induced vibration suppression results have laid a solid foundation for the engineering implementation of high precision trajectory tracking for the next generation large radio telescope.

Key words: Additional damping control of vibration, Electrorheological adaptive damper, Large radio telescope, Mechatronics, Wind-induced vibration