Mechanical pre-design of high performance motion servomechanisms

High speed and high precision servomechanisms are key elements in the high performance controlled motion systems. Therefore, it is of great importance to consider the limitations of dynamic perfomances during the design of me chanism dedicated to controlled motion axis. An important limitation is due to the interaction between flexible mechanism and feedback controller. Thi s paper aims to include this interaction in the mechanical design. Some des ign rules are generated with a generic model which includes this interactio n. Afterwards, with these new design rules it is possible to determine the bandwidth and the inertial ratio of the mechanism to meet the controlled mo tion requirements (e.g., speed and precision). With these rules and some ot her classical rules, an attempt to raise the selection of design solutions has been set within the context of the ball screw drive system for high spe ed machine tools (e.g., kinematics, components and sensor location choices) . (C) 2000 Elsevier Science Ltd. All rights reserved.