车距自控系统跟车模型稳定性理论分析  

Theoretic Analyses on Stability of Car-following Models Appropriate to Automatic Safe Headway Control System

作　　者：杨佩昆[1] 李克平[1] 

机构地区：[1]同济大学道路与交通工程系,上海200092

出　　处：《同济大学学报（自然科学版）》2000年第6期661-663,共3页Journal of Tongji University:Natural Science

基　　金：国家自然科学基金资助项目(59578045)

摘　　要：车辆跟车运行时的反应时滞可能引起跟车系统的不稳定 .为了跟车运行的安全 ,须研究分析跟车系统的稳定性 .运用自动控制理论中的根轨迹法分析跟车模型的稳定性 ,用根轨迹法求得跟车稳定性分析的根轨迹曲线及其特征根 。Time-lag of response in car-following operation may bring about instability of car-following system. The effect of the time-lag parameter in car-following model on stability of car-following system must be analyzed for the safety of car-following operation. This paper analyses stability of car-following model taking advantage of root locus method in theory of automatic cnotrol. Using root locus method, root locus curve of stability analysis of car-following and its characteristic roots are extracted. Numerical ranges of the time-lag parameter for stability of car-following system are given.

关 键 词：车距自控系统 跟车模型稳定性 稳定性分析 根轨迹法 

分 类 号：U491[交通运输工程—交通运输规划与管理]