方程式赛车转向梯形优化设计及仿真
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摘要
为解决方程式赛车高速过弯产生的转向稳定性和单侧偏磨的问题,进一步提高赛车的过弯能力,提出一种适用于方程式赛车转向梯形的优化设计方案。探究侧偏角对转向的影响,优化标准阿克曼转角关系,从而确定目标函数和约束条件,控制转向梯形的内外转角关系尽可能符合阿克曼校正系数为43%的转向关系,通过MATLAB计算得到优化结果。利用ADAMS进行仿真实验,通过车轮平行跳动实验验证了优化结果的可靠性。结果表明优化后的转向梯形的臂长为82.55 mm,底角为113.85°,具有良好的转向稳定性。
In order to solve the problem of steering stability and unilateral eccentric wear of Formula car at high speed, and to further improve the bending capacity of the racing car, an optimal design scheme for the steering trapezium of the Formula car is proposed in this paper. Considering the influence of lateral force on steering, a motion model of the steering trapezium is established to determine the objective function and the constraint conditions. The relationship between the internal and external rotation angles of the steering trapezium is as close as possible to the Ackerman correction coefficient of 43%, and the optimized steering trapezium is obtained by MATLAB calculation. At the same time, ADAMS is used to establish the steering system and suspension system dynamics model of the car, and the reliability of the optimization results is verified through the wheel parallel beating experiment.The results show that the optimized steering trapezium has an arm length of 82.55 mm and a bottom angle of 113.85°, which has good steering stability.
In order to solve the problem of steering stability and unilateral eccentric wear of Formula car at high speed, and to further improve the bending capacity of the racing car, an optimal design scheme for the steering trapezium of the Formula car is proposed in this paper. Considering the influence of lateral force on steering, a motion model of the steering trapezium is established to determine the objective function and the constraint conditions. The relationship between the internal and external rotation angles of the steering trapezium is as close as possible to the Ackerman correction coefficient of 43%, and the optimized steering trapezium is obtained by MATLAB calculation. At the same time, ADAMS is used to establish the steering system and suspension system dynamics model of the car, and the reliability of the optimization results is verified through the wheel parallel beating experiment.The results show that the optimized steering trapezium has an arm length of 82.55 mm and a bottom angle of 113.85°, which has good steering stability.
引文
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[4]向铁明,任恒山,朱易铭.赛车转向梯形优化设计方法——厦门理工学院28号FSAE赛车转向梯形设计[J].厦门理工学院学报,2009,17(4):48-50.
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[8]陈思忠,倪俊,吴志成.基于特定赛道的方程式赛车转向梯形优化与虚拟试验[J].机械传动,2012,36(9):67-70.
[2]向铁明,周水庭,沈理真.赛车转向梯形建模及优化设计[J].机械设计,2014,31(3):63-66.
[3]廖小亮,孙泽海.基于ADAMS的FSAE赛车转向梯形机构的优化设计[J].湖北汽车工业学院学报,2011,25(4):39-42.
[4]向铁明,任恒山,朱易铭.赛车转向梯形优化设计方法——厦门理工学院28号FSAE赛车转向梯形设计[J].厦门理工学院学报,2009,17(4):48-50.
[5]李君,邓正俊,郑维炜,等.FSAE方程式赛车转向梯形优化[J].农业装备与车辆工程,2014,52(12):10-13.
[6]姚汉波,唐应时,王焕美,等.FSAE方程式赛车转向系统的仿真与优化[J].计算机仿真,2011,28(4):349-352.
[7]赵聪.FSAE赛车转向系统设计及性能分析[D].合肥:合肥工业大学,2015.
[8]陈思忠,倪俊,吴志成.基于特定赛道的方程式赛车转向梯形优化与虚拟试验[J].机械传动,2012,36(9):67-70.