汽车俯仰与跳动复合运动的分析

Analysis of the Pitching and Bouncing Motion of the Car

为了减少俯仰运动,后悬架应该比前悬架有较高的弹簧刚度。研究表明:汽车前后频率和阻尼比用俯仰和跳动总功率表示;跳动总功率在最小俯仰总功率的最佳频率比时,几乎达到最大值,较高的后频和较高的阻尼比减少了俯仰运动。

We have an empirical knowledge that the rear suspension should have a higher spring rate than front one，in order to reduce pitching motion. This paper investigates the optimum frequency and damping ratios of front and rear end of the car with overall power of the pitching and bouncing，The bouncing overall power is nearly maximized at the optimum frequency ratio of the minimum pitching overall power， The higher rear-frequency and The higher rear-damping ratio reduce pitching motion。