Computer-aided design diagnosis for machines—kinematic model extraction from mechanisms

Abstract This paper presents a method for kinematic model extraction from a given mechanism as an approach to design diagnosis. A computerized method of extracting a kinematic model, which is usually expressed by a kinematic diagram, is proposed and illustrated with four mechanisms of 4–34 elements. Also verification of intended kinematic models, and prediction of element separation in faulty mechanisms were successfully carried out. As a unified expression method for the mechanism and kinematic model, the Composition Diagram is proposed in our study.