无级变速汽车最佳动力性优化控制策略  

Optimal control strategy of CVT equipped vehicle for maximum power performance

作　　者：罗勇[1] 孙冬野[1] 胡丰宾[1] 邓涛[1] 

机构地区：[1]重庆大学机械传动国家重点实验室,重庆400044

出　　处：《重庆大学学报（自然科学版）》2010年第3期1-6,共6页Journal of Chongqing University

基　　金：国家自然科学基金资助项目(50475066)

摘　　要：无级变速器(Continuously Variable Transmission,CVT)效率对汽车驱动功率的大小有直接影响,需要在最佳动力性控制中加以考虑。在分析CVT效率对汽车驱动功率影响机理的基础上,以驱动功率最大为优化目标,对各节气门开度和车速下的CVT目标速比进行优化计算。建立系统仿真模型,对优化前后的控制效果进行了仿真对比分析,结果表明,优化后系统百公里加速时间减少约0.63s。Continuously Variable Transmission （CVT） equipped vehicle improves its power performance by ensure the engine works on its peak power point under each throttle angle.This method didn＇t pay any attention to the CVT efficiency,which also has influences on power performance of the system.Based on the analysis of how CVT efficiency influences power performance of the system,an optimal algorithm is proposed to calculate the target CVT ratio to achieve maximum power performance with consideration of CVT efficiency.A simulation model is established to validate the optimal algorithm.Simulation results indicate that the acceleration time from 0 km to 100 km of the system veduced by 0.63 s.

关 键 词：汽车 无级变速器 效率 动力性 

分 类 号：TH132[机械工程—机械制造及自动化]