汽车工程 ›› 2024, Vol. 46 ›› Issue (1): 109-119.doi: 10.19562/j.chinasae.qcgc.2024.01.012

• 精选论文 • 上一篇    下一篇

基于电动汽车制动安全检测的短时工况及方法研究

焦志鹏,马建,赵轩,张凯(),孟德安,韩琪,张昭   

  1. 长安大学汽车学院,西安 710064
  • 收稿日期:2023-06-11 修回日期:2023-07-07 出版日期:2024-01-25 发布日期:2024-01-23
  • 通讯作者: 张凯 E-mail:zhangkai@chd.edu.cn
  • 基金资助:
    国家自然科学基金(52172362);陕西省重大科技攻关项目(2020ZDZX06-01-01);霍英东青年教师基金项目(171103);陕西省重点研究发展计划(2019ZDLGY15-01);陕西省重点研发计划(2021LLRH-04-03-02);陕西省自然科学基金(2022JQ-494);中央高校基本科研业务项目(300102222108)

Research on Short-Time Test Cycle and Method Based on Electric Vehicle Braking Safety Detection

Zhipeng Jiao,Jian Ma,Xuan Zhao,Kai Zhang(),Dean Meng,Qi Han,Zhao Zhang   

  1. School of Automobile,Chang’an University,Xi’an  710064
  • Received:2023-06-11 Revised:2023-07-07 Online:2024-01-25 Published:2024-01-23
  • Contact: Kai Zhang E-mail:zhangkai@chd.edu.cn

摘要:

常规的制动安全检测通常采用长时间、极端工况,但可能会失去准确的工作范围。针对这一不足,首先提出一种踏板稳定模式的短时工况试验方法,该方法结合了现有的测试标准,并不限于单一的极端制动模式,而是可以考虑电动汽车的快速稳态运行。在此基础上,基于机器学习对运行片段回归并通过连续拼接构建短时工况。利用短时工况提出一种改进的制动安全检测方法,该方法通过主成分分析对制动片段的特征参数进行降维,同时根据特征参数计算制动片段的重复性距离判断安全隐患。最后,通过在测试台架上跟随短时工况,验证所提出的短时工况和制动安全检测方法的有效性。

关键词: 电动汽车, 制动安全, 短时工况, 检测方法, 测试台架

Abstract:

Conventional braking safety detection usually uses long and extreme working conditions but may result in a loss of accurate working range. To address this deficiency, firstly, a short-time test cycle for stabilizing pedal mode test method is developed, which incorporates existing test standards, not limited to a single extreme braking mode but taking into consideration of fast steady-state operation of electric vehicles. Then, running fragments based on machine learning are regressed, and the short-time test cycle is constructed by fusion and splicing. Also, an improved braking safety detection method is proposed with short-time test cycle, which reduces the dimension of the characteristic parameters of the braking segments by the principal component analysis, while the hidden danger is judged by calculating the repeatability distance of braking segments based on the characteristic parameters. Finally, the effectiveness of the proposed short-time test cycle and detection method is verified by means of following test on a test bench.

Key words: electric vehicles, braking safety, short-time cycle, detection method, test bench