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Electric vehicle brake system model and building method thereof

An electric vehicle, a technology for establishing a method, applied in the directions of registration/indication of vehicle operation, special data processing applications, instruments, etc., can solve the problems of high collision avoidance rate, inaccurate braking prediction model, and insufficient recognition accuracy, etc. Safety and the effect of enhancing application value

Active Publication Date: 2022-01-21
BEIJING JIAOTONG UNIV
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AI Technical Summary

Problems solved by technology

[0071] Through the above analysis, the existing problems and defects of the existing technology are: the AEB function is relatively mature at present, but there are still problems such as insufficient recognition accuracy and high collision avoidance rate; domestic research on AEB technology has achieved certain results, However, compared with foreign countries, China's research on AEB needs to be further deepened
The braking prediction model in the AEB braking system model is not accurate enough

Method used

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  • Electric vehicle brake system model and building method thereof
  • Electric vehicle brake system model and building method thereof
  • Electric vehicle brake system model and building method thereof

Examples

Experimental program
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Embodiment

[0181] Example: Simulation analysis of electric vehicle AEB system and its control strategy

[0182] 1. Based on the functional requirements of the electric vehicle AEB system, the present invention designs the electric vehicle AEB system architecture, including the system hardware architecture and software architecture. Analyzed and studied the three parts of driving information perception module, controller module and actuator module, designed the inter-module communication and network protocol, and carried out the selection and installation layout design of the perception sensor. On the basis of the electric vehicle AEB system architecture, an electric vehicle AEB simulation test platform based on CarSim / Simulink is built. According to the simulation requirements of the AEB system, the mainstream simulation software was compared and analyzed and selected, and then the vehicle model, radar model, camera model, road model and brake system model were established, and the estab...

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Abstract

The invention belongs to the technical field of electric vehicles, and discloses an electric vehicle brake system model and a building method thereof, and the building method of the electric vehicle brake system model comprises the following steps: building a simulation model of an electric vehicle AEB; creating an interface of the CarSim software and an interface of the Simulink software; creating a braking system model based on Simulink; and verifying the simulation model. Simulation experiment analysis results show that the invention can basically realize collision avoidance in an AEB test scene specified in C-NCAP, and the control strategy is greatly improved compared with a classic algorithm in five indexes of speed reduction rate, maximum deceleration, deceleration change rate, minimum distance between two vehicles and early warning time. And the safety of the automobile and the comfort of a driver are improved, and the road surface with a low road surface adhesion coefficient can be well adapted.

Description

technical field [0001] The invention belongs to the technical field of electric vehicles, and in particular relates to a braking system model of an electric vehicle and a method for establishing the same. Background technique [0002] In order to effectively reduce the occurrence of traffic accidents and improve driving safety, many solutions have been adopted. According to the time of the accident, these schemes can be divided into two categories: passive safety and active safety. The main purpose of passive safety schemes is to reduce the damage caused by traffic accidents to occupants after the accident, such as airbags, seat belts and tempered glass, etc.; while active safety schemes are to work before traffic accidents. Avoid traffic accidents, such as reversing radar / image, forward warning system (FCW), automatic emergency braking system (AEB), adaptive cruise system (ACC), etc. In essence, the passive safety program will not avoid accidents, but can only reduce the ...

Claims

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Application Information

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IPC IPC(8): G06F30/15G07C5/08
CPCG06F30/15G07C5/0808Y02T90/00
Inventor 张宝迪张欣杨复钰辛佳庚赵宏任
Owner BEIJING JIAOTONG UNIV
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