Development of Test Device Using Parallel Mechanism

Frame of motorcycle receives complicated force and moment in actual running . Some time, damage is considerable and motorcycle component failure takes place. This is very dangerous and efficient test method is desired . But application of conventional test method of single or multiple actuators is difficult, because test object is relatively small and fragile . In this situation, we developed new method of load test using parallel mechanism . Advantage of this method is possibility to generate any assigned force or moment vector at desired small point. That is, combined skew force or three-axis moment test becomes possible by only software change. We actually designed practical parallel mechanism actuating system for motorcycle. End-effector force and moment vector are converted to cylinder pressure command by Jacobian matrix method.