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汽车安全与节能学报 ›› 2023, Vol. 14 ›› Issue (5): 600-608.DOI: 10.3969/j.issn.1674-8484.2023.05.009

• 智能驾驶与智慧交通 • 上一篇    下一篇

神经网络识别和Markov链预测的商用车APU控制策略

王君琦1(), 李勇滔1,*(), 郑伟光1,2, 张彦会1, 陈子邮3, 许恩永3, 李育方3, 王善超3   

  1. 1.广西科技大学重型车辆零部件先进设计制造教育部工程研究中心,柳州 545616,中国
    2.吉林大学汽车工程学院,长春 130022,中国
    3.东风柳州汽车有限公司,柳州 545616,中国
  • 收稿日期:2023-03-06 修回日期:2023-07-10 出版日期:2023-10-31 发布日期:2023-10-31
  • 通讯作者: *李勇滔,副研究员。E-mail:liyongtao@gxust.edu.cn
  • 作者简介:王君琦(1997—),男(汉),广东,硕士研究生。E-mail:221054990@stdmail.gxust.edu.cn
  • 基金资助:
    国家自然科学基金项目(52065013);广西重点研发计划项目(桂科AB21220052);柳州市科技重大专项(BSGZ2101);柳州市科技重大专项(2022AAA0104)

Commercial vehicle APU control strategy based on neural network identification and Markov chain prediction

WANG Junqi1(), LI Yongtao1,*(), ZHENG Weiguang1,2, ZHANG Yanhui1, CHEN Ziyou3, XU Enyong3, Li Yufang3, WANG Shanchao3   

  1. 1. Engineering Research Center of Advanced Design and Manufacturing of Heavy Vehicle Components, Ministry of Education, Guangxi University of Science and Technology, Liuzhou 545006, China
    2. College of Automotive Engineering, Jilin University, Changchun 130022, China
    3. Dongfeng Liuzhou Motor Company, Liuzhou 545616, China
  • Received:2023-03-06 Revised:2023-07-10 Online:2023-10-31 Published:2023-10-31

摘要:

为改善商用车空气处理系统的燃油经济性,提出一种以基于电磁阀控制的电控空气处理单元(APU)控制策略,进行了Simulink系统仿真实验。该策略具有基础、低压和高压等3种工作模式;基于发动机工况识别和预测方法;利用Matlab/Simulink搭建车辆模型和空气处理系统模型;并构建了神经网络模式识别和Markov链预测控制模型对发动机的运行工况进行识别分类和需求扭矩百分比预测。结果表明:仿真实验验证了工况分类和电磁阀控制策略的有效性。在中国重型商用车瞬态工况(C-WTVC)下,与相同储气筒初始气压条件的机械APU相比较,应用该控制策略的电控APU的功率消耗下降480 Wh,下降比率34.7%,燃油经济性显著改善。

关键词: 商用车, 燃油经济性, 空气处理单元(APU), 电磁阀控制, 控制策略, 模式识别, Markov链

Abstract:

A control strategy was proposed for an electronically-controlled air-processing-unit (APU) based on electromagnetic valve control, with some Simulink system simulation experiment being conducted to improve the fuel economy of commercial-vehicle air-treatment systems. The strategy had three working modes: the basic, the low-pressure, and the high-pressure, based on the identification and prediction methods of engine operating-condition. A vehicle model and an air treatment system model were built by using the Matlab/Simulink. A neural-network pattern recognition and a Markov-chain prediction control model were constructed to identify and classify the engine operating-conditions and predict the required torque percentage. The results show that the electronically controlled APU with this control strategy reduces the power consumption by 480 Wh compared to the mechanically controlled APU under the same initial pressure conditions of air tank in the China World Transient Vehicle Cycle (C-WTVC), with a reduction rate of 34.7%. These results improve fuel economy significantly.

Key words: commercial vehicles, fuel economy, air processing unit (APU), solenoid valve control, control strategy, pattern recognition, Markov chain

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