Method for high-order estimation of whole vehicle weight and target setting of whole vehicle weight
A goal setting and weighting technology, applied in special data processing applications, complex mathematical operations, geometric CAD, etc., can solve problems such as cross-combination effects of multiple variables that are not considered
Pending Publication Date: 2021-11-30
JIANGLING MOTORS
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None of the above methods considered the cross-combination effect between multiple variables, and used linear fitting. In fact, the weight of the vehicle may be a multivariate nonlinear equation related to these key variables.
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[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0020] In the following, 13 groups of sample data of competing product models are used to judge and estimate using the method of the present invention.
[0021] The 13 sets of sample data are some key parameters of the selected competing models. In the fitting and prediction of regression analysis, the data of the selected samples and the characteristics of the samples themselves are extremely critical for model analysis.
[0022] The main principles to be fol...
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The invention relates to the field of whole automobile research and development, in particular to a method for high-order estimation of the whole automobile weight and target setting of the whole automobile weight in the early stage in the whole automobile development process. According to the method, multiple linear regression analysis is adopted to find out key variables influencing the weight of the whole vehicle, and multiple nonlinear regression analysis and a fitting method are adopted to pre-estimate the logic relation between the weight of the whole vehicle and the key variables in a high-order mode in the early stage so as to predict the pre-high-order pre-estimated weight of the vehicle type under research. In the aspect of early-stage whole vehicle weight target setting, the whole vehicle weight set by compromising the weight estimation difference of the surface density and the volume density serves as the whole vehicle weight target, the method can also be suitable for early-stage weight high-order estimation and weight target setting of the body in white, and reliable reference can be provided for whole vehicle weight target setting in the early stage of product development.
Description
technical field [0001] The invention relates to the field of vehicle research and development, in particular to a method for high-level estimation of vehicle weight in the early stage and vehicle weight target setting in the process of vehicle development. Background technique [0002] There are many types of advanced vehicle weight estimation methods in the research industry, and how to accurately estimate the vehicle weight of the model under research is still a big challenge. [1] Shi Liuquan et al. "A method for setting vehicle weight targets." Using multiple linear regression analysis, single linear regression analysis and key parameters with a high degree of correlation with vehicle weight, the vehicle weight is obtained for these Variable linear regression equation. CN110162842A.2019.[2] Fan Mengzong et al. "A method for obtaining a vehicle weight target.", CN110569280A.2019. Mainly uses a linear regression analysis to find key parameters with a high degree of correla...
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Login to View More IPC IPC(8): G06F30/15G06F17/18
CPCG06F30/15G06F17/18
Inventor 汪兆亮段龙杨黄炯高少俊王洋
Owner JIANGLING MOTORS