电控空气悬架控制算法研究

The Study of the Control Arithmetic of the Electronic Control Air Suspension

在简要综述了电控空气悬架系统构成和控制算法的基础上,建立了1/4汽车电控空气悬架的最优控制数学模型,分析比较了空气悬架与普通钢板弹簧悬架车身加速度、悬架动挠度和轮胎动变形对路面激励速度的幅频特性.结果表明,与传统的弹簧悬架相比空气悬架有较优越的动态传递特性,可显著改善车身的动态响应特性,提高汽车的行驶平顺性;降低车轮与路面之间的相对动载,减少汽车对路面的冲击损坏.

A quarter- vehicle optimal control model of the electronic control air suspension is established and a brief introduction of the structure and the control arithmetic of the electronic control air suspension is given. The amplitude frequency characteristics of the body acceleration, suspension dynamic travel and the tire distortion compared with the stimulant rate of the road is compared between the air suspension and the suspension with the plate spring. The results indicate that the air suspension have well dynamic transfer characteristic , and improve the dynamic response characteristic of the body and the riding performance, reduce the relative dynamic load between the tire and the road and the road＇s impacting damage.