摘要
针对电子真空助力器实现制动压力主动调节功能时存在参数时变的问题,基于一种参考模型自适应控制理论对其控制算法进行设计,并应用李亚普诺夫理论证明了该控制系统的稳定性。同时,设置制动压力变化率阈值作为紧急制动辅助(EBA)功能的启动条件以降低系统成本。试验结果表明,所设计的压力调节功能控制算法可有效地减小系统参数时变造成的干扰;EBA功能能够对驾驶员的紧急制动意图进行准确判断,有效缩短制动距离。
In view of the time-varying feature of parameters of electronic vacuum booster（EVB） in the active regulation of braking pressure,its control algorithm is designed based on model reference adaptive control theory,and the stability of the control system is proved by Lyapunov theory.In addition,a threshold of braking pressure changing rate is set as the activating condition of emergency brake assist（EBA） function for reducing system cost.Test results show that the braking pressure regulating algorithm can effectively inhibit the disturbance caused by the time-varying of parameters and the EBA function can accurately judge the emergency braking intent of driver and hence effectively shorten braking distance.
出处
《汽车工程》
EI
CSCD
北大核心
2011年第12期1067-1072,共6页
Automotive Engineering
