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Vehicle instability control method, vehicle instability control device and vehicle

A control method and control device technology, applied in the fields of vehicles, vehicle instability control, and vehicle instability control devices, can solve problems such as friction plate wear and large power loss, and achieve the goal of ensuring dynamic performance, stable correction, and ensuring safety Effect

Active Publication Date: 2020-07-10
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the vehicle is unstable, the unstable state of the vehicle is alleviated by reducing the torque and controlling the braking of the vehicle, so the power loss of the vehicle is very large, and the friction plate is seriously worn.

Method used

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  • Vehicle instability control method, vehicle instability control device and vehicle
  • Vehicle instability control method, vehicle instability control device and vehicle
  • Vehicle instability control method, vehicle instability control device and vehicle

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Embodiment Construction

[0038] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0039] The vehicle instability control method, the vehicle instability control device and the vehicle with the device according to the embodiments of the present invention will be described below with reference to the accompanying drawings.

[0040] figure 1 is a structural schematic diagram of a vehicle according to an embodiment of the present invention.

[0041] Such as figure 1 As shown, each wheel in the vehicle is provided with a wheel motor and a wheel speed sensor, and the vehicle is also provided with a steering wheel ...

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Abstract

The invention discloses a vehicle unstability control method, a vehicle unstability control device and a vehicle. Wheel-side motors are arranged for each wheel in the vehicle. The method comprises thefollowing steps of judging whether the vehicle is in the unstable state or not, wherein the unstable state comprises the understeering state and the oversteering state; when the vehicle is in the understeering state, controlling the vehicle through the wheel-side motors to increase driving force of the wheels at the outer side, reduce driving force of the wheels at the inner side, and increase brake force of the wheels at the inner side; when the vehicle is in the oversteering state, controlling the vehicle through the wheel-side motors to increase the driving force of the wheels at the innerside, reduce the driving force of the wheels at the outer side, and increase the brake force of the wheels at the outer side. Thus, by conducting stepwise control on the wheel-side motors, the brakeforce is gradually strengthened, so that the vehicle more quickly and stably makes turns, the safety and dynamic performance are guaranteed, and the limiting speed, capable of being processed, of thevehicle unstability is higher.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a vehicle instability control method, a vehicle instability control device and a vehicle with the device. Background technique [0002] Usually, when the vehicle is turning, two kinds of instability situations may occur. One is that the vehicle flicks due to insufficient adhesion between the rear wheels and the ground, resulting in oversteer; Understeer. [0003] At present, in the face of the above two instability situations, the condition of the vehicle is generally detected according to the signal of the sensor, and then the torque output of the engine and the brake hydraulic pressure of each wheel are controlled according to the condition of the vehicle. When the steering is understeer, the inner rear wheel Braked; when oversteering, the outer front wheel is braked, so as to achieve the purpose of alleviating the unstable state of the vehicle. However, when the vehicle ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60L15/20
CPCB60L15/20B60L15/2009B60L2220/42B60L2220/46Y02T10/72
Inventor 姚伟王世友岳光俊胡梦蝶
Owner BYD CO LTD
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