Abstract:Electrically controlled rotor (ECR) can replace the swashplate control system to fulfill rotor control function through trailing-edge flap deflection which can change blade pitch via blade aero-elastic twist deformation. However, due to the complexity of ECR, the torsional stiffness of blade root and the mass of the blade may be dissimilar, thus causing heavy vibration. In order to solve this problem, an active vibration control method base on individual blade control is proposed. Taking a model ECR as an example, numerical simulations are carried out. The results show that the individual blade control method can reduce the vibration level to as low as no more than 10% of original level.