Yaw stability control method of electric vehicle based on adaptive thrust reverser controller

A technology for stability control and electric vehicles, applied in electric vehicles, control drives, control devices, etc., can solve problems such as difficulty in meeting, and achieve the effects of low cost, improved handling stability, and simple and easy methods.

Active Publication Date: 2022-07-01
XIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the difficulties in the control of electric vehicles is that when mitigating the lateral stability problems caused by vehicle steering, there are constraints that are difficult to satisfy, requiring that the performance indicators should be limited within a certain range

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  • Yaw stability control method of electric vehicle based on adaptive thrust reverser controller
  • Yaw stability control method of electric vehicle based on adaptive thrust reverser controller
  • Yaw stability control method of electric vehicle based on adaptive thrust reverser controller

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Embodiment Construction

[0078] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0079] The yaw stability control method of the electric vehicle based on the self-adaptive thrust reverser controller of the present invention, such as figure 1 shown, including the following steps:

[0080] Step 1. Build the lateral dynamics model of the electric vehicle; because it includes the main features of the lateral dynamics of the electric vehicle and has a simple structure, the lateral dynamics model of the electric vehicle has been widely used in the field of yaw stability control of the electric vehicle . The present invention proposes a lateral dynamics model of an electric vehicle, such as figure 2 shown. The lateral dynamics model of the electric vehicle includes the lateral dynamics equation of the electric vehicle, the rotational dynamics equation of the wheel, the lateral acceleration and the lateral acceleration; the spe...

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Abstract

The invention discloses an electric vehicle yaw stability control method based on an adaptive thrust reverser controller, comprising the following steps: constructing a lateral dynamics model of an electric vehicle; developing an adaptive thrust reverser controller based on a barrier Lyapunov function, It can be used as an upper-level controller to generate the desired additional yaw moment; an optimal torque distribution algorithm based on the minimum objective function is developed as a lower-level controller to distribute the additional yaw moment; the method of the present invention can finally realize an adaptive thrust reverser controller The design and torque distribution algorithm are of great significance to the yaw stability control of electric vehicles. It solves the problems of tire sideslip that may occur in electric vehicles under dangerous conditions, and effectively improves the maneuverability and driving safety of electric vehicles. .

Description

technical field [0001] The invention belongs to the technical field of yaw stability control of electric vehicles, and particularly relates to a yaw stability control method of electric vehicles based on an adaptive thrust reverser controller. Background technique [0002] As a clean energy vehicle, electric vehicles have been booming in recent years, and their safety is a major concern, because when electric vehicles drive at high speeds on roads with low adhesion coefficients, traffic such as tire side slip will be more likely to occur. question. [0003] In order to avoid such traffic accidents, more and more scholars have proposed a variety of control methods, such as anti-lock braking system and active front wheel steering system, in order to improve the handling stability and driving quality of electric vehicles. It should be noted that direct yaw moment control is one of the most effective ways to improve the stability of electric vehicles, and has a better ability t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60W30/02B60W50/00B60L15/20G06F30/17G06F30/15
CPCB60W30/02B60W50/00B60L15/20G06F30/17G06F30/15G06F2119/14B60W2050/0037Y02T10/72
Inventor 庞辉姚睿王鹏王明祥
Owner XIAN UNIV OF TECH
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