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为满足汽车驾驶辅助系统对于辅助制动装置越来越高的要求,提出了一种基于汽车普通制动真空助力器的集成式电子真空助力器系统(Electronic Vacuum Booster,EVB)。在对系统整体结构进行设计的基础上,基于电磁铁数学模型对EVB关键零部件电磁铁参数进行了优化设计。为实现基于EVB的驾驶辅助系统控制器设计,对包括控制器和执行器在内的EVB整体系统模型进行了辨识。试验结果表明:所开发的EVB系统能快速、精确地响应制动指令,可广泛应用于自适应巡航控制系统、走-停巡航系统及主动避撞系统等驾驶辅助系统。
In order to satisfy the increasing demand of auxiliary drive system for vehicle driving assistance system, an integrated electronic vacuum booster (EVB) system based on the ordinary brake vacuum booster is proposed. Based on the design of the overall structure of the system, the electromagnet parameters of key components of EVB are optimized based on the mathematical model of electromagnet. In order to realize the controller design of driving assistance system based on EVB, the overall system model of EVB including controller and actuator was identified. The experimental results show that the developed EVB system can respond to braking commands quickly and accurately, and can be widely used in driving assistance system such as adaptive cruise control system, walk-stop cruise control system and active collision avoidance system.