Electromechanical braking device for rotor of wind mill, has displacement sensor measuring deformation of control arm, and control unit acting on power supply unit of electrical motor when measured deformation exceeds predetermined value

摘要

The device has an electrical motor fixed with a screw-nut system (4) to provide an axial effort and control movement of a barking plate to support on a rotating part. The axial effort of the system is transmitted to a control arm of a lever (12) pivoting around a shaft (14). The control arm is a deformable arm when torque is exerted by the control arm on the shaft. A displacement sensor i.e. inductive sensor (38), measures deformation of the control arm. A control unit acts on a power supply unit of the electrical motor when the measured deformation exceeds a predetermined value.