COMPUTER AIDED DESIGN FOR PRELIMINARY STUDY OF ELECTROHYDRAULIC POSITION ACTUATORS

Abstract

This paper deals with the preliminary design methodology of electrohydraulic actuators that can be computerised in order to reduce cost and time. First, some elements are given for the translation of the customers specifications into actuation requirements. Then, the hydraulic actuator sizing is presented with respect to installed power. In the last step, further specifications are suggested by considerations to the control requirements. Stability constraints are defined using the linear approach while accuracy is evaluated from original non linear balances. The procedure is illustrated by the recent design of a high performance human centrifuge.