基于Freescale HCS08的汽车电控空气悬架系统设计

Design of Electronic Control Air Suspension System for Vehicle Based on Freescale HCS08

设计了一种以飞思卡尔MC9S08GB60单片机为控制核心的汽车电控空气悬架系统。着重阐述了其硬件电路系统和具体电路设计,并对软件设计要点进行了介绍。通过在实验室进行台架测试,验证了本系统相对于被动悬架系统有效的改善了悬架动行程、车轮动载荷及车身垂直加速度三项重要指标,在实现车身高度调节控制的同时改善了车辆乘坐的舒适型,且电路结构简单、稳定性好。

The electronic control air suspension system for vehicle was designed, which uses a microcontroller Freescale MC9S08GB60. The paper emphasizes the circuit of the hardware system, meanwhile, introduces the key points on the software design. The test bench in laboratory certified that the ECAS relative passivity-suspension,improved three important indexes effectively, which are the working space of suspension, body vertical acceleration and the wheel dynamic load. It improves the ride comfort of vehicle when controlling the ride height. The system is simple structure, stability and practical.