Method for constructing driving condition of electric vehicle

A technology for driving conditions and electric vehicles, which is applied in traffic control systems, instruments, and traffic control systems of road vehicles. Reflect the performance of new energy vehicles and other issues

Inactive Publication Date: 2018-06-22
CHANGAN UNIV
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AI Technical Summary

Problems solved by technology

[0003] At present, the existing driving conditions cannot meet the actual national conditions of our country, including road traffic characteristics, environmental conditions, etc.; nor can they truly reflect the performance of new energy vehicles, because the traditional energy conditions cannot evaluate the air conditioning and braking energy of new energy vehicles The impact of recycling and other situations on power consumption; at the same time, it also provides convenience for foreign new energy vehicles to enter the Chinese market, which is not conducive to the development of my country's independent new energy vehicles
In addition, the current research on driving conditions is mostly based on diesel locomotives, and mainly focuses on the analysis of test data and the construction of driving conditions in the later stage. There is not much research on the early stage of test planning, which will affect The authenticity of the test data and the reliability of the constructed driving conditions

Method used

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  • Method for constructing driving condition of electric vehicle
  • Method for constructing driving condition of electric vehicle
  • Method for constructing driving condition of electric vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0048] Embodiment: Taking a typical large city in China as an example, the driving conditions of electric vehicles are constructed.

[0049] 1. Traffic situation research and test planning

[0050] see figure 1 , in order to make the constructed driving conditions fully reflect the actual traffic conditions of a certain city, the road network information of a certain city is first investigated, as shown in Table 1:

[0051] Table 1 Road network information of a large city

[0052]

[0053] In order to reduce the test cost, a sampling method without replacement is adopted, a sample is selected from the road network population, and the characteristics of the population are reflected through the characteristics of the sample, so as to achieve the purpose of investigation. Suppose the road network length X of a certain city obeys normal distribution, that is, X~N(μ,σ 2 ), (x 1 ,x 2 ,...,x n ) is a simple random sample from the overall road network. According to the princi...

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Abstract

The invention discloses a method for constructing driving condition of an electric vehicle, which can solve the problem that the conventional driving conditions cannot accurately evaluate various performance indexes and energy consumption of the electric vehicle, establishes a driver best travel manner model based on urban road network information and daily traffic flow, establishes a calculationmethod and an allocation rule of the sample capacity required for a test, and plans a test route accordingly, and determines the test time. A large amount of experimental data is obtained by using GPS / IMU equipment. According to the working characteristics of an electric motor of the electrical vehicle and its operating characteristics in urban roads, the rules of data preprocessing and data analysis are formulated. Finally, the driving condition of the electric vehicle is constructed based on the Markov-static Monte Carlo simulation method.

Description

technical field [0001] The invention belongs to the field of development of actual road driving conditions of electric vehicles, and in particular relates to a construction method of driving conditions of electric vehicles. Background technique [0002] Vehicle driving conditions are a comprehensive reflection of many factors such as roads, climate environment, and driving habits in a country (region). One of the key factors restricting the development of the automobile industry. [0003] At present, the existing driving conditions cannot meet the actual national conditions of our country, including road traffic characteristics, environmental conditions, etc.; nor can they truly reflect the performance of new energy vehicles, because the traditional energy conditions cannot evaluate the air conditioning and braking energy of new energy vehicles The impact of recycling and other situations on power consumption; at the same time, it also facilitates the entry of foreign new en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08G1/01G06Q10/06G06Q50/30
CPCG06Q10/063G06Q50/30G08G1/0125
Inventor 赵轩余强吴岩王姝余曼张思远
Owner CHANGAN UNIV
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