HYDRAULIC ACTUATOR

摘要

The present invention relates to a hydraulic actuator, in particular an electrically driven hydraulic actuator. An example of the electrically driven hydraulic actuator comprises a variable speed motor, a variable capacity displacement pump arranged to be driven by the variable speed motor; and a hydraulic actuator driven by the variable displacement pump. Being able to vary the speed of the motor and the displacement of the pump enables the actuator to be able to be operated very flexibly and the motor does not have to be driven at an excessively high or low speed reducing wear and over-heating of the motor.