摘要
为改善智能混合动力汽车智能辅助驾驶时的制动转矩响应,提出了电机与电子真空助力液压制动系统协调控制策略,包括EVB预测启动控制策略和制动转矩协调控制策略。基于期望制动转矩预测,建立了融合EVB动态响应特性的EVB预测启动控制策略。综合考虑电机动态响应特性、响应裕度、EVB动态响应特性和电池荷电状态,提出了基于电机制动转矩动态补偿的制动转矩协调控制策略。仿真结果表明,该协调制动控制策略可在整个制动过程提高制动转矩响应精度,改善系统的动态响应。
For improving the braking torque response of intelligent hybrid electric vehicles during assisted driving,an electric motor / electronic vacuum booster（EVB） coordinated control strategy for hydraulic braking system is proposed,which includes EVB predictive start control strategy and braking torque coordinated control strategy.EVB predictive start control strategy merged with EVB dynamic response characteristics is established based on prediction of desired braking torque.With concurrent considerations of the dynamic response characteristics and response margin of motor,the dynamic response characteristics of EVB and the SOC of battery,a braking torque coordinated control strategy is put forward based on the dynamic compensation of motor braking torque.Simulation results show that the coordinated braking control strategy proposed can enhance braking torque response accuracy in the whole braking process and hence improve the dynamic response of the system.
出处
《汽车工程》
EI
CSCD
北大核心
2011年第11期915-919,共5页
Automotive Engineering
基金
国家863高技术项目(2006AA11Z217)
国家自然科学基金项目(50805081)资助
