基于空间解析几何的双横臂独立悬架运动学分析

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针对汽车悬架运动学分析方法中存在计算过程复杂、不易编程计算的问题,给出了一种应用空间解析几何理论建立双横臂独立悬架运动学性能参数的数学模型的方法。首先在ADAMS软件中建立了双横臂独立悬架的实体仿真模型,仿真结果表明所建数学模型正确、可靠;然后为便于工程实际应用,以Matlab为设计平台,开发了可视化的双横臂独立悬架运动学分析界面GUI,该界面友好、易于设计人员操作;最后利用该界面输出的曲线评价了双横臂独立悬架的运动学性能。研究结果表明,该方法简便直观、易于实现计算机编程,在一定程度上提升了悬架运动学分析及改进设计的效率。 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.