Abstract:A closed-form pulse train control algorithm is presented for vibration suppression of flexible spacecraft during large angle maneuver.Based on attitude angle and angular velocity,the control algorithm uses thrusters for coarse attitude control and reaction wheels for high precision attitude control at the final stage of operations.The input shaping is introduced to modulate thruster pulses with a set of properly timed impulses to suppress vibrations introduced by on-off control.Physical experiment results demonstrate that the proposed approach can significantly reduce the vibration of flexible appendages during fast large angle maneuver,and the presented control algorithm has the advantages of less fuel consumption,as well as simplicity and efficiency for practical on-board computer operation.