Concurrent design of component synthesis active vibration suppression(CSVS) method and closedloop feedback control is presented in order to remarkably enhance the insensitivity to external disturbances for CSVS method.The attitude dynamics and vibration equations of rotary motion for the system consisted of central rigid body with flexible appendages are obtained.By using series of unconstrained modal functions,the decoupled motion expressions for both of the central rigid body and flexible appendages are derived.Through choosing appropriate controlled variable,the flexible appendages vibration and CSVS are added to the constraint equations in designing parameters of closed-loop feedback control and the best performance solution are obtained.Numerical simulation on a flexible single beam model shows that the proposed method can suppress not only the inherent flexible harmonics in the system,but also the additional vibrations introduced by the feedback loop.Meanwhile,the settle time is shorter than that of normal control method.