TYPE SYNTHESIS OF VEHICLE PLANAR SUSPENSION MECHANISM USING GRAPH-THEORY

This paper presents a graph theory-based approach to optimum type synt hesis of vehicle suspension mechanisms using an expert system. Kinemat ic chain isomorphism is identified, using an extended degree method to facilitate the enumeration of kinematic structures. Rules representin g design criteria and the flow value theory based on energy loss calcu lation are incorporated in the rule base to evaluate and select mechan isms among those that are enumerated in the database. Statistical vari ance calculation serves to complement the flow value theory. A new met hod called the extended flow value method is devised for isomorphism c hecking of labeled graphs. In the spirit of increasing emphasis on the riding quality of vehicles, several novel suspension configurations a re created to ensure maintenance ease and vibration damping efficiency .