ELECTRO-HYDRAULIC ACTUATOR WITH INTEGRATED BRAKE

摘要

PROBLEM TO BE SOLVED: To provide an electro-hydraulic actuator that is able to be operated in high holding torque mode for long periods of time without overheating and without having high energy consumption.SOLUTION: An electro-hydraulic actuator has a master cylinder, an electric motor, and an electro-mechanical brake. The master cylinder has a hydraulic cylinder and an actuation piston slidably received within the hydraulic cylinder to vary pressure within a hydraulic circuit. The electric motor is adapted to drive the actuation piston into the hydraulic cylinder. The electric motor has a stator and a rotor. The electro-mechanical brake is arranged to selectively and releasably hold the rotor with respect to the stator to prevent rotational motion therebetween.