基于用户大数据的电子助力制动器可靠性工况特征研究

Research on Reliability Condition Characteristics of Electronic Brake Booster Based on User Big Data

本文中以不同地域和车型的实际用户运行数据为基础,通过提取制动工况片段对制动时间、制动距离和制动强度分布进行分析;根据台架试验数据,建立制动强度与工况载荷之间的关系,实现用户运行数据向工况载荷的转换,并分析用户载荷下典型部件的损伤和损伤贡献,进一步将用户工况与标准工况在频次和损伤方面进行对比,结果表明现有的可靠性试验规范难以有效复现用户实际制动水平。因此建议及早制定更加合理的电子助力制动系统可靠性评价规范。

Based on the real users.operation data of different regions and vehicle models,the distributions of braking time,braking distance and braking strength are analyzed by extracting the segments of braking conditions.According to bench test data,the relationship between braking strength and operating load is established to achieve the transformation of user operating data to operating load,analyze the damage and damage contribution of typical components under the user.s load,and further compare user working conditions with standard working conditions in terms of frequency and damage.The results show that the existing reliability test specifications are hard to effectively reproduce the actual braking level of users,so it is strongly suggested to formulate more rational reliability assessment specifications of electronic brake booster as soon as possible.