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Vehicle steady-state intelligent control method and device

A technology of intelligent control and steady-state control, applied in the field of automobiles, can solve problems such as driving safety hazards and reducing driving comfort

Active Publication Date: 2018-12-07
GREAT WALL MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention aims to propose a vehicle steady-state intelligent control method and device to solve the problems of potential safety hazards in driving and reduced driving comfort in the prior art when automobiles use VSC alone for steady-state control.

Method used

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  • Vehicle steady-state intelligent control method and device

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Experimental program
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Embodiment 1

[0043] refer to figure 1 , which is a flow chart of a vehicle steady-state intelligent control method described in an embodiment of the present invention, may specifically include the following steps:

[0044]Step 101 , obtain vehicle driving parameters; the driving parameters at least include: wheel speed, lateral and longitudinal acceleration, yaw rate, engine and motor torque, driver input information, vehicle speed, and tire rolling radius.

[0045] In the embodiment of the present invention, a hybrid vehicle refers to a vehicle that can be driven by fuel or electricity. Usually, the VSC system and the yaw rate sensor are used to measure the yaw rate, the lateral accelerometer to measure the lateral acceleration, and the longitudinal accelerometer to measure the yaw rate. Measure the longitudinal acceleration, the wheel speed sensor measures the wheel speed, the steering wheel angle sensor measures the value of the driver input information such as the steering wheel angle,...

Embodiment 2

[0055] refer to image 3 , which is a flow chart of a vehicle steady-state intelligent control method described in an embodiment of the present invention, may specifically include the following steps:

[0056] Step 201, acquiring vehicle driving parameters; the driving parameters at least include: wheel speed, lateral and longitudinal acceleration, yaw rate, engine and motor torque, driver input information, vehicle speed, and tire rolling radius.

[0057] This step is the same as step 101, and will not be described in detail again.

[0058] Step 202, obtaining an understeer gradient value according to the driving parameters.

[0059] In the embodiment of the present invention, such as Figure 4 As shown in the schematic diagram of the steady-state motion characteristics, the VSC system monitors and controls vehicle stability using sensors that measure values ​​such as yaw rate, lateral acceleration, wheel speed, steering wheel angle, brake pedal and accelerator pedal positi...

Embodiment 3

[0114] refer to Figure 16 , is a structural block diagram of a vehicle steady-state intelligent control device according to an embodiment of the present invention.

[0115] A driving parameter acquisition module 401 , a stability factor value acquisition module 402 , and a steady state control module 403 .

[0116] refer to Figure 17 , the function of each module and the interaction relationship between each module are introduced in detail below.

[0117] The driving parameter acquisition module 401 is used to acquire the driving parameters of the vehicle; the driving parameters at least include: wheel speed, lateral and longitudinal acceleration, yaw rate, engine and motor torque, driver input information, vehicle speed, tire rolling radius;

[0118] Stability factor value acquisition module 402, used to obtain the driving stability factor value according to the vehicle driving parameters;

[0119] Preferably, the stability factor value acquisition module 402 specificall...

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Abstract

The invention provides a vehicle steady-state intelligent control method and a vehicle. The vehicle steady-state intelligent control method comprises the following steps that vehicle driving parameters are acquired; the driving parameters comprise at least a wheel speed, lateral and longitudinal acceleration, a yaw rate, an engine and motor torque, driver input information, a vehicle speed and a tire rolling radius; a driving stability factor value is obtained according to the vehicle driving parameters; and according to the driving stability factor value, the steady state of the vehicle is determined and a whole vehicle control unit is started, or the whole vehicle control unit and a vehicle stability control system carry out the steady-state control over the vehicle. The method solves the problems of potential safety hazards and reduced driving comfort due to the fact that a vehicle in the prior art uses VSC alone for the steady-state control.

Description

technical field [0001] The invention relates to the field of automobiles, and relates to a vehicle steady-state intelligent control method and device. Background technique [0002] Due to the increasing energy crisis and air pollution, the state has introduced a series of energy-saving and emission-reduction measures, and introduced stricter emission regulations for the automobile industry, thus promoting the development of new energy vehicles. At present, pure electric vehicles are an ideal development goal, but limited by the relatively backward technical status of power batteries, it is still difficult to ensure the two factors of vehicle power and battery life for pure electric vehicles. Therefore, hybrid electric vehicles, which combine the advantages of traditional vehicles and pure electric vehicles, are the mainstream of development at present. [0003] The vehicle control system advanced vehicle dynamic control system used in the use of hybrid electric vehicles, it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60W30/02B60W40/10B60W40/105B60W40/107B60W40/109
CPCB60W20/10B60W30/02B60W40/10B60W40/105B60W40/107B60W40/109B60W2510/0657B60W2510/083
Inventor 牛小锋刘维峰周铁刘自敏孔凡茂马龙兴曾迁刘天培白龙霞戴彦收
Owner GREAT WALL MOTOR CO LTD
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