Suspension kinematic structure for passive control of vehicle attitude

摘要: The motion geometry of an independent suspension linkage have significant influence on vehicle behaviour. We state the geometric requirements for optimal performance as two sets specifications, one wheel–road kinematics and other sprung mass–road kinematics. As most current passenger cars are equipped with passive single–degree–of–freedom suspensions, we evaluate such linkages in terms their potential to meet these requirements. show that: (1) which roll, camber track width control not achievable; (2) many suspensions display undesirable ride feature known bump steer; (3) maintain constant during straight–line cannot achieve zero roll turns; (4) pitch acceleration is achievable if accelerating inputs provided at only end vehicle. propose novel multi–degrees–of–freedom capable ditch, our solutions rely inclusion joints a way that they always reciprocal external forces exerted by environment automobile. rule, produce no motions designs therefore passive. design methodology used herein may also be extended arrangements jounce–rebound wheel decoupled from degree–of–freedom. However, camber, capabilities achieved cost increased mechanical complexity linkage.