基于独立桨距控制的电控旋翼主动振动控制

Active Vibration Control Through Individual Blade Control on Electrically Controlled Rotor

电控旋翼利用桨叶后缘襟翼偏转通过气弹作用带动桨叶变距,从而实现对旋翼的控制。但由于其系统的复杂性,桨叶间易存在扭转刚度和质量不相似,从而引起较严重的旋翼振动。针对该情况,提出了基于独立桨距控制的主动振动控制方法,并以某原理性电控旋翼为算例进行了数值仿真,验证了所提出控制方法对电控旋翼由扭转刚度和质量不相似引起振动的减振有效性,最佳减振水平可达90%。

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 ac- tive 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.