Kinematics analysis of double wishbone independent suspension based on spatial analytic geometry

TIAN Zhong-hui， LI Yu-guang， WANG Shu-fen， MU Xiao-kai
（College of Mechanical Engineering， Dalian University， Dalian 116622， China）

Abstract： Aiming at the problem existed in the kinematics analysis ways of the vehicle suspension that is complex to calculate and difficult to program，a method based on the theory of spatial analytic geometry was presented to build mathematical model of kinematics characteristics of double wishbone independent suspension. The solid simulation model was established in ADAMS software，the simulation results show that the mathematical model is accuracy and reliability. In order to apply it to engineering practical application conveniently，visible interface GUI of the double wishbone independent suspension was designed based on Matlab development platform. The interface GUI is friendly and easy to operate for designers. The kinematics characteristics of double wishbone independent suspension was evaluated by using the curves exported from GUI. The results show that，the method is simple，intuitive and easy to implement computer program， the efficiency of suspension kinematics analysis and its improved design can be promoted in a certain extent.
Key words： double wishbone independent suspension；spatial analytic geometry；kinematics analysis；ADAMS；visible interface；graphical user interface（GUI）