Active vibration control of cable-driven deployable truss structure mast
A deployable mast inevitably experiences vibration due to temperature variations and satellite maneuver actions in space.In low-damping space environments,these vibrations decay slowly and significantly affect the normal operation of a deployable mast.Therefore,implementing an appropriate vibration control strategy is crucial for ensuring a proper operation of a deployable mast.This study specifically focuses on a deployable truss mast that employs cables as actuators.The research includes the optimization of actuator positions and the design of control laws,taking into account both unilateral and saturated constraints of the cable actuators.First,modal information about the structure is obtained using the commercial software ANSYS.Second,an actuator position optimization method is devised by the controllability principles and the genetic algorithm.Finally,the deployable truss mast consisting of four units is simulated and analyzed.The results demonstrate that the proposed optimal actuator position and the control law effectively mitigate the vibration and ensure the stable operation of the deployable mast.
deployable truss structure mastcable-drivenmodel predictive controlvibration controlactuator position optimization
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