电子助力器功能安全可控度评估量化方法研究  

Research on quantitative method of functional safety controllability evaluation of eBooster

作　　者：邹波 李林学 袁圆 周汉彪 余颖弘 ZOU Bo;LI Linxue;YUAN Yuan;ZHOU Hanpiao;YU Yinghong(China Automotive Engineering Research Institute Co.,LTD.,Chongqing 401120,China;Chongqing Automotive Chassis Performance Engineering Technology Research Center,Chongqing 401120,China)

机构地区：[1]中国汽车工程研究院股份有限公司,重庆401120 [2]重庆市汽车底盘性能工程技术研究中心,重庆401120

出　　处：《自动化与仪器仪表》2025年第1期128-132,137,共6页Automation & Instrumentation

基　　金：国家重点研发计划(乘用车智能线控一体化底盘关键技术及产业化2023YFB2504500)。

摘　　要：针对目前行业内现有的功能安全可控度等级评估标准相对抽象导致的实际工作中可控度评估操作性弱的问题,提出了一种针对电子助力器(eBooster)的可控度评估的量化方法。首先基于eBooster相关项定义,结合场景分析,采用HAZOP方法进行危害识别;针对上述危害,基于制动过程分析,采用时序分解的方法,梳理出了eBooster失效后驾驶员制动动作的关键时间维度;结合时间维度及相对车速,根据相对距离与反应距离、制动距离的关系建立可控度等级评估矩阵;最后,通过Carsim仿真进行了验证,其结果与评估矩阵一致,表明该方法可量化评估eBooster功能安全可控度。evaluation standards of functional safety controllability level,a quantitative method for controllability evaluation of electronic booster is proposed.First,based on the definition of eBooster related items,combined with scenario analysis,HAZOP method is used to identify hazards.In view of the above hazards,based on the braking process analysis,the key time dimension of the driver's braking action after eBooster failure is sorted out by the method of time sequence decomposition.According to the relationship between relative distance,reaction distance and braking distance,the evaluation matrix of controllability grade is established.Finally,Carsim simulation was used to verify the results,which were consistent with the evaluation matrix,indicating that the method could quantitatively evaluate the functional safety controllability of eBooster.

关 键 词：功能安全 可控度 eBooster HAZOP 时序分解 评估矩阵 

分 类 号：U461[机械工程—车辆工程] TP29[交通运输工程—载运工具运用工程]