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A pre-regulated vehicle stability control system and method

A technology for stability control and vehicle, applied in the direction of control devices, etc., can solve the problems of unable to maintain vehicle stability, unpredictable stability control conditions, accidents, etc.

Active Publication Date: 2018-12-18
WUHAN UNIV OF TECH
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Problems solved by technology

When the vehicle encounters vehicle instability when cornering, generally speaking, their vehicle stability control has played a role, but because the vehicle failed to stabilize the out-of-control vehicle in the end, the accident eventually occurred
Existing vehicle stability control systems can only achieve real-time control, or have only a small amount of advance, and still rely on the driver to preview the road conditions in advance, cannot predict the stability control conditions, and cannot maintain the vehicle when the road surface is low and the vehicle speed is low. Stability and other issues

Method used

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  • A pre-regulated vehicle stability control system and method

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the present invention is not limited.

[0034] The structure of the vehicle stability control system adjusted in advance provided by the present invention is as attached figure 1 As shown, the predicted road condition calibration subsystem, ECU (p 2 ) and actuator components. Among them ECU(p 1 ) is the first part of the ECU in the car, and the ECU (p 2 ) is the second part of the ECU in the car.

[0035] The predicted road condition calibration subsystem is used to identify road condition information at a certain distance ahead of the vehicle, including road surface adhesion coefficient and road curvature, and the distance between the vehicle and the curve. The predicted road condition calibration subsystem includes a vehicle-mounted road condition identification unit and a road condition information sharing station unit. The specific components...

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Abstract

The invention relates to a pre-regulated vehicle stability control system and method. The system is composed of predictive road condition calibration subsystem, ECU (p2) and actuator. The predicted road condition calibration subsystem includes an ECU (p1) and an ECU (p2), which are first and second portions of the in-vehicle ECU, respectively. The method comprises the following steps: the vehicleidentifies the road condition in front of the vehicle through the image sensor and the network joint cooperative correction; In an ECU (p2), calculating a steering wheel rotation angle when a vehiclepasses through a bend based on the identified road curvature; In the ECU (p2), the limit vehicle speed Vmax of the vehicle passing through the bend safely with the assistance of the VSC system is calculated. In the ECU (p2), the shortest speed regulating distance X 'and the maximum brake deceleration amax of the vehicle under the control of the ABS are calculated, and the vehicle is actively braked with the limit speed as the control objective, so that the vehicle enters the curve at a driving speed lower than the limit speed.

Description

technical field [0001] The invention relates to the technical fields of driver auxiliary safety and automobile active safety, in particular to a pre-adjusted vehicle stability control system and method. Background technique [0002] After 1995, the basic form of automotive stability control was confirmed with the advent of yaw rate and lateral acceleration sensors. The automotive electronic stability control system can effectively improve the driving stability of the vehicle under extreme working conditions, reduce the traffic accident rate, and effectively reduce the death rate in traffic accidents by actively applying corresponding braking control. After more than 20 years of exploration, research and practical application, the vehicle stability control system has been widely used in automobiles. Engineers and researchers have conducted analysis and research on this system to make it perfect in terms of software and hardware. In the VSC system Things like design and contr...

Claims

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Application Information

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IPC IPC(8): B60W30/02B60W30/045B60W40/06B60W40/064B60W40/072B60W50/00
CPCB60W30/02B60W30/045B60W40/06B60W40/064B60W40/072B60W50/00B60W2050/0002B60W2050/0019
Inventor 张洪昌刘为曾娟
Owner WUHAN UNIV OF TECH
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