大学生电动方程式赛车转向梯形设计及总布置

Design of Steering Trapezium of Formula Student Electric China

针对中国大学生方程式汽车大赛规则,通过轻量化来优化转向系统,同时控制成本。以盐城工学院YMR野马第4代电动方程式赛车为例,该车采用后轮轮毂电机驱动,同时电子差速取代了传统的机械差速。首先从转向系统的机构着手,进行梯形优化,使其实际使用效果更加符合理想阿克曼原理。通过CAD作图法进行分析,利用MATLAB进行优化确定最终的梯形臂参数。最后,根据优化后的参数进行ANSYS分析。结果表明:转向时动力损失有所减小,防止了轮胎的过度磨损,为轮毂电机的电子差速问题提供数据支持。

According to formula student electric China rules,optimize the steering system by lightweight design,and so control the cost.Taking YMR Mustang 4th generation of electric formula of Yancheng Institute of Technology as an example,the car is rear wheel hub motor driven,while the traditional mechanical differential replaced by electronic differential.Firstly,the trapezoidal optimization is carried out from the mechanism of the steering system to make its practical application more in line with the ideal Ackerman principle.Through the analysis with CAD graphic method,the trapezoidal arm parameters are optimized by using MATLAB.Finally,ANSYS analysis is carried out according to the optimized parameters.The results show that the power loss during steering decreases,the excessive wear of tires is prevented,and the technical support for the electronic differential problem of hub wheel motor is provided.