Coordination control method and device for active front wheel steering and torque vector of electric automobile

A technology of active front wheel steering and torque vectoring, used in electric vehicles, motor control, control drive, etc.

Pending Publication Date: 2022-08-02
JIANGXI UNIV OF SCI & TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above method only performs proportional coordinated output of the additional front wheel angle and additional yaw moment control amount according to the stability of the vehicle or the saturation degree of the front wheel cornering force, and does not fundamentally analyze the impact of active front wheel steering and torque vectoring on vehicle handling. Influence of stability control effect

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Coordination control method and device for active front wheel steering and torque vector of electric automobile
  • Coordination control method and device for active front wheel steering and torque vector of electric automobile
  • Coordination control method and device for active front wheel steering and torque vector of electric automobile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] like figure 1 As shown in the figure, the coordinated control method of active front wheel steering and torque vectoring of electric vehicles includes the following steps:

[0026] (1) Based on the single-track vehicle model, construct a two-degree-of-freedom vehicle model including two degrees of freedom of vehicle side sway and yaw;

[0027] (2) establishing an ideal reference model according to the two-degree-of-freedom vehicle model in step (1);

[0028] (3) According to the two-degree-of-freedom vehicle model of step (1), design an active front wheel steering controller;

[0029] (4) Design a torque vectoring controller, which includes calculating additional yaw moment and torque distribution;

[0030] (5) Introduce a deep reinforcement learning controller to coordinate the output of the active front wheel steering and the torque vector controller.

[0031] The invention constructs a two-degree-of-freedom vehicle model including two degrees of freedom of the veh...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a coordinated control method and device for active front wheel steering and torque vector of an electric vehicle, which can efficiently coordinate an active front wheel steering technology and torque vector control, give full play to the advantages of active front wheel steering and torque vector control, and improve the control effect of vehicle handling stability. The method comprises the following steps: (1) based on a monorail vehicle model, constructing a two-degree-of-freedom vehicle model containing two degrees of freedom of vehicle lateral deviation and yaw; (2) establishing an ideal reference model according to the two-degree-of-freedom vehicle model in the step (1); (3) designing an active front wheel steering controller according to the two-degree-of-freedom vehicle model in the step (1); (4) designing a torque vector controller; and (5) a deep reinforcement learning controller is introduced, and coordinated output is conducted on an active front wheel steering and torque vector controller.

Description

technical field [0001] The invention relates to the technical field of vehicle active safety control, in particular to a coordinated control method for active front wheel steering and torque vectoring of electric vehicles, and a coordinated control device for active front wheel steering and torque vectoring of electric vehicles. Background technique [0002] Vehicle active safety control technology is the research focus of vehicle control, which is related to people's life safety. Distributed drive electric vehicles have independently controllable four-wheel torque, and a torque vectoring controller can be used to generate the additional yaw moment needed to maintain vehicle stability. Torque vector control technology works well in extreme conditions, but the control of the center of mass slip angle is limited and cannot form an effective constraint, which affects the accuracy of vehicle trajectory tracking. On the other hand, the torque vector control technology has a grea...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B60L15/20G05B13/04H02P29/00
CPCB60L15/20G05B13/042H02P29/00B60L2240/12B60L2240/24B60L2240/423Y02T10/72
Inventor 黄开启黄茂云熊运振黄子昊苑心愿
Owner JIANGXI UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products