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汽车安全与节能学报 ›› 2023, Vol. 14 ›› Issue (1): 118-124.DOI: 10.3969/j.issn.1674-8484.2023.01.014

• 汽车节能与环保 • 上一篇    下一篇

主动进气格栅电控系统故障诊断策略

曹子健1(), 吴长水1,*(), 陈礼2   

  1. 1.上海工程技术大学 机械与汽车工程学院,上海201600,中国
    2.上海衡鲁汽车科技有限公司,上海201800,中国
  • 收稿日期:2022-07-14 修回日期:2022-10-17 出版日期:2023-02-28 发布日期:2023-03-07
  • 通讯作者: 吴长水
  • 作者简介:*吴长水(1978—),男(汉),福建,副教授。E-mail:wuchangshui@sues.edu.cn
    曹子健(1997—),男(汉),河北,硕士研究生。E-mail:1514905266@qq.com

Fault diagnosis strategy of electronic control system of active grille shutter

CAO Zijian1(), WU Changshui1,*(), CHEN Li2   

  1. 1. School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai 201600, China
    2. Shanghai Hiro Automotive Technologies Co., Ltd, Shanghai 201800, China
  • Received:2022-07-14 Revised:2022-10-17 Online:2023-02-28 Published:2023-03-07
  • Contact: WU Changshui

摘要:

主动进气格栅(AGS)是当前提高汽车燃油经济性的一种重要技术手段,为提高其可靠性与稳定性,该文提出了一种应用于其电控系统的故障诊断策略。基于AGS电控系统软件架构,设计了4类故障诊断机制进行故障诊断,并提出相应的故障保护措施; 设计了格栅挡点位置自适应算法,消除因器件老化故障以及长期小角度、高频次状态下运转带来的误差累积,减少诊断过程中的故障误报;基于自主开发的台架进行故障注入试验与故障误报测试试验,验证了所设计的故障诊断策略。结果表明:该文所设计的故障诊断策略能够快速、准确识别故障并进行分级处理,保证正常运行过程中的格栅开度误差范围为限值5°,提高了整个系统运行的可靠度。

关键词: 主动进气格栅, 软件架构, 故障诊断, 故障注入

Abstract:

Active grille shutter (AGS) is an important technical means to improve the fuel economy of automobiles at present. A fault diagnosis strategy applied to its electronic control system was proposed to improve AGS’s reliability and stability. Based on the software architecture of AGS electronic control system, 4 kinds of fault diagnosis mechanisms were designed for fault diagnosis, and corresponding fault protection measures were put forward. An adaptive algorithm of grilles’ boundary position, which can eliminate the error accumulation caused by aging failure of devices and long-term small-angle and high-frequency operation, was designed to reduce the fault false alarm in the diagnosis process. Finally, the fault injection test and fault false alarm test were carried out based on the self-developed bench, and the designed fault diagnosis strategy was verified. The results show that the designed fault diagnosis strategy can quickly and accurately identify and classified the faults, ensuring the error range in normal operation is limited to 5° and improving the reliability of the whole system.

Key words: active grille shutter, software architecture, fault diagnosis, fault injection

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