闭环空气悬架系统车高调节建模与能耗分析

针对一种与开环空气悬架系统充放气回路不同的电控闭环空气悬架系统,介绍它的气路系统的结构和工作原理,以热力学和动力学为基础,系统地建立车高调节过程数学模型和能耗计算方法。通过Simulink仿真,分析车身动态变化规律,计算车高调节过程中的能量消耗量,并与同等条件下电控开环空气悬架系统的能耗进行了比较。仿真结果表明,与开环空气悬架系统相比,该电控闭环空气悬架系统在车高调节过程中需要消耗较多的时间,但是能够节约大量能量。

Modeling and energy consumption analysis on height adjustment of closed loop air suspension system

According to a kind of electronic control closed loop air suspension system,which charging-discharging circuit is different from that of open loop air suspension,the structure and working principle were introduced,the mathematical model of height adjustment and the calculation method of energy consumption were systematically built on the base of thermodynamics and kinetics.The dynamic change regularity of vehicle body was analyzed by Simulink simulation,and the energy consumption in the process of vehicle height adjustment was computed,then the result was compared with that of open loop air suspension under the same conditions.The simulation results demonstrated that,compared with open loop air suspension,this closed loop air suspension system spends more time on the process of vehicle height adjustment,but it can save plenty of energy.