Vehicle movement dynamics control method

A dynamic and dynamic technology, applied in the direction of brakes, brake components, brake control systems, etc., can solve problems such as loss of driving stability, and achieve the effects of reduced complexity, reduced computing power, and simple structure

Active Publication Date: 2015-08-12
CONTINENTAL AUTOMOTIVE TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Risk of low coefficient of friction: Loss of driving stability due to excessive braking intervention on the rear axle

Method used

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  • Vehicle movement dynamics control method
  • Vehicle movement dynamics control method
  • Vehicle movement dynamics control method

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0020] figure 1 By way of example, a schematic view of a motor vehicle 1 is shown, which is suitable for carrying out the method according to the invention. The motor vehicle has a drive motor 2 driving at least part of the vehicle's wheels, a steering wheel 3, a brake pedal 4 connected to a tandem master cylinder (THZ) 13 and four individually controllable wheel brakes 10a-10d. The method according to the invention can be carried out even when part of the vehicle's wheels are driven and / or a conventional differential is used. In addition to hydraulic friction brakes, electromechanically actuated friction brakes can also be used as wheel brakes on one, several or all wheels. The vehicle can also have an electric drive, wherein, in particular, the braking torque at at least one wheel is at least partially generated by an electric machine operated as a generator.

[0021] To detect the driving dynamics state, there is a steering angle sensor 12, four wheel speed sensors 9a-9d,...

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Abstract

The invention relates to a method for controlling the movement dynamics of a motor vehicle, in which a measured transverse dynamics variable is compared with a transverse dynamics variable which is calculated on the basis of a vehicle model, wherein it is checked whether the vehicle is understeering, and in this case the difference between the measured and the calculated transverse dynamics variables is reduced by increasing braking forces at the wheels of at least the front axle independently of the driver. According to the invention, the time gradient of the braking force at each wheel at which a braking force is increased is selected in accordance with the difference between the measured and calculated transverse dynamics variables. In addition, the invention relates to a brake system for a motor vehicle.

Description

technical field [0001] The invention relates to a method according to the preamble of claim 1 and a braking system according to the preamble of claim 9 . Background technique [0002] Modern vehicles often have a driving dynamics control device in which the actual characteristic is ascertained, for example by means of yaw rate sensors, wheel speed sensors and lateral acceleration sensors, and compared with the measured steering angle via the vehicle compared to the given properties computed by the model. In yaw moment regulation, the measured actual yaw rate of the vehicle is compared with a calculated setpoint yaw rate; if the difference exceeds an activation threshold and if necessary further entry conditions are met, the Driver-independent brake interventions at the wheels. If understeer is determined, wherein the set yaw rate exceeds the actual yaw rate, the rear wheel on the inside of the curve is braked so that the actual characteristic approaches the set characteris...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60T8/1755
CPCB60T2210/12B60T2270/613B60T8/1755B60T2270/86B60T2270/313
Inventor D·尼科莱蒂P·巴拉兹
Owner CONTINENTAL AUTOMOTIVE TECH GMBH
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