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Automobile suspension mechanisms have to date been designed using two-dimensional graphic oriented methods. Computer-aided design has allowed many two-dimensional mechanisms to be designed much more accurately. However, this has not translated to suspension mechanisms because these mechanisms are not two-dimensional but instead three-dimensional.
Early developments of design methods for three-dimensional suspension mechanisms using computers such as vectors and other kinematic methods failed due to the large displacements associated in the suspension mechanisms. More importantly, these methods serve analysis and not design purposes. To actually facilitate design, the method must provide not only the analysis to check the mechanism’s performance but also guide synthesis to create the mechanisms that then can be analyzed to perfect the final design.