汽车工程 ›› 2024, Vol. 46 ›› Issue (3): 456-463.doi: 10.19562/j.chinasae.qcgc.2024.03.009

• • 上一篇    

基于概率模型和数据驱动的动力总成悬置系统可靠性优化

吕辉1,2,张家明1,2,黄晓婷1(),上官文斌2   

  1. 1.广州城市理工学院汽车与交通工程学院,广州 510800
    2.华南理工大学机械与汽车工程学院,广州 510641
  • 收稿日期:2023-07-20 修回日期:2023-08-28 出版日期:2024-03-25 发布日期:2024-03-18
  • 通讯作者: 黄晓婷 E-mail:huangxt_gcu@126.com
  • 基金资助:
    国家自然科学基金(51975217);广东省自然科学基金(2023A1515011585)

Reliability Optimization for the Powertrain Mounting System Based on Probability Model and Data-Driven Model

Lü Hui1,2,Jiaming Zhang1,2,Xiaoting Huang1(),Wenbin Shangguan2   

  1. 1.School of Automobile and Traffic Engineering, Guangzhou City University of Technology, Guangzhou 510800
    2.School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510641
  • Received:2023-07-20 Revised:2023-08-28 Online:2024-03-25 Published:2024-03-18
  • Contact: Xiaoting Huang E-mail:huangxt_gcu@126.com

摘要:

针对电动汽车动力总成悬置系统(PMS)一部分参数为概率变量,一部分参数为离散数据的复杂不确定情形,开展了基于概率模型和数据驱动的电动汽车PMS可靠性优化设计研究。首先,基于任意多项式混沌(APC)展开和广义最大熵原理推导了一种求解该复杂不确定情形下PMS响应不确定性和可靠性的高效方法;然后,基于蒙特卡洛抽样,给出了该复杂不确定情形下求解PMS响应不确定性和可靠性的参考方法;接着,提出了一种基于APC展开法的灵敏度分析方法,进一步提出了一种考虑响应不确定性和可靠性的PMS优化设计方法;最后,通过应用算例验证方法的有效性,并对系统进行了灵敏度分析和可靠性优化。结果表明,所提出的方法可有效地处理电动汽车PMS一部分参数为概率变量、一部分参数为离散数据的复杂不确定情形,并能可靠地优化该情形下的系统固有特性,且方法具有较高的计算精度和计算效率。

关键词: 电动汽车动力总成悬置系统, 任意多项式混沌展开, 最大熵原理, 数据驱动, 不确定性

Abstract:

For complex and uncertain situations related to the powertrain mounting system (PMS) of electric vehicle where some parameters are probabilistic variables, and some parameters are discrete data, a study on the reliability optimization design for the PMS of electric vehicles is conducted based on the probabilistic model and data-driven model. Firstly, based on the arbitrary polynomial chaos (APC) expansion and generalized maximum entropy principle, an efficient method is derived for solving the uncertainty and reliability of the PMS response under the aforementioned complex uncertain situation. Then, based on the Monte Carlo sampling, a reference method is proposed for performing the uncertainty and reliability analysis of PMS. Next, a sensitivity analysis method based on APC expansion method is proposed, and an optimization method of PMS is further put forward considering the uncertainty and reliability of responses. Finally, a numerical example is used to verify the effectiveness of the proposed method, and the sensitivity analysis and reliability optimization of the system are carried out. The results show that the proposed method can effectively handle the complex and uncertain situations where some parameters of the electric vehicle PMS are probability variables and some parameters are discrete data and can optimize the PMS inherent characteristics reliably with good computational accuracy and efficiency.

Key words: powertrain mounting system of electric vehicle, arbitrary polynomial chaos expansion, maximum entropy principal, data-driven, uncertainty