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Hybrid electric vehicle calibration parameter optimal value determination method considering working conditions

A hybrid electric vehicle, calibration parameter technology, applied in hybrid electric vehicles, motor vehicles, transportation and packaging, etc., can solve the problems of cumbersome selection process, large number of calibration parameters, and shorten the research and development cycle of the vehicle controller, so as to reduce the number , reduce the number of calibration parameters, reduce the effect of calibration workload

Active Publication Date: 2020-06-30
JILIN UNIV
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Problems solved by technology

[0005] In order to solve the problems of cumbersome selection process of the optimal value of the calibration parameter of the current hybrid electric vehicle under different working conditions and a large number of calibration parameters to be solved, the present invention provides a method for determining the optimal value of the calibration parameter of the hybrid electric vehicle considering the working condition , through the analysis of internal and external causes of the optimal value of the calibration parameters, combined with multiple linear regression analysis and ridge regression analysis, the number of calibration parameters related to the optimal value of the calibration parameters and the driving conditions of the vehicle is reduced, the calibration efficiency is improved, and the vehicle is shortened. Controller R&D Cycle

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  • Hybrid electric vehicle calibration parameter optimal value determination method considering working conditions
  • Hybrid electric vehicle calibration parameter optimal value determination method considering working conditions
  • Hybrid electric vehicle calibration parameter optimal value determination method considering working conditions

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Embodiment Construction

[0049] The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0050] A method for determining the optimal value of calibration parameters of a hybrid electric vehicle considering working conditions according to the present invention, refer to the attached figure 1 , including the following:

[0051] The first step is to establish a calibration parameter optimal value model, which specifically includes the following steps:

[0052] ①Under the condition of battery power balance, the transfer efficiency η represented by energy loss tr As shown in formula (1):

[0053]

[0054] In the formula, E wh Indicates the theoretical driving total energy of the cycle condition at the wheel, E ice Indicates that the engine actually provides energy, E B Indicates the regenerative braking energy recovered considering the braking recovery efficiency, ΔE RGB Indi...

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Abstract

The invention discloses a hybrid electric vehicle calibration parameter optimal value determination method considering working conditions, and relates to the technical field of hybrid electric vehicles. The method comprises five steps of establishing a calibration parameter optimal value model, analyzing internal and external causes of the calibration parameter optimal value, synthesizing drivingconditions and selecting condition characteristic parameters, performing multiple linear regression analysis and ridge regression analysis, and determining the calibration parameter optimal value related to the automobile driving conditions. The optimal value of the calibration parameter is determined by taking the optimal economy of the whole vehicle as a design principle; internal and external causes of the optimal value of the calibration parameter are analyzed, the optimal calibration parameter value related to the attribute of the vehicle and the optimal calibration parameter value related to the driving working condition are screened out, the method for determining the optimal calibration parameter values of the two types is explained, the direction is pointed out for the parameter calibration path of the hybrid electric vehicle considering the working condition, the parameter calibration workload is reduced, and the calibration efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of hybrid electric vehicles, more precisely, the invention relates to a method for determining optimal values ​​of calibration parameters of hybrid electric vehicles considering working conditions. Background technique [0002] With the continuous reduction of fossil energy and the increasingly serious environmental pollution problems, energy conservation and emission reduction have become an important development direction of the current automotive industry. As an important part of the automotive field, hybrid vehicles have good energy-saving and emission Key R&D targets of car companies. The development of the vehicle controller is the focus of research and development of hybrid electric vehicles, and the calibration work must be carried out when designing the vehicle controller, including the selection of calibration parameters and the determination of the optimal value of the calibration parameters. At ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W20/00B60W20/15B60W50/00
CPCB60W20/00B60W50/00B60W20/15
Inventor 宋大凤梁伟智云千芮曾小华杨丽丽郑琦王诗元宁竞李量宇吴梓乔
Owner JILIN UNIV
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