Method for determining a target curve incline of a motor vehicle during traveling of a curved roadway section

Patent metadata

Field	Value
Publication number	US-9694812-B2
Application number	US-201314654427-A
Country	US
Kind code	B2
Filing date	Oct 31, 2013
Priority date	Dec 20, 2012
Publication date	Jul 4, 2017
Grant date	Jul 4, 2017

Abstract

A method and device for determining a target curve incline of a motor vehicle during traveling of a curved roadway section is disclosed. A momentary transverse acceleration of the motor vehicle is determined depending on a momentary speed of the motor vehicle and a momentary roadway curvature of the curved roadway section determined by an optical detection system. A momentary target curve incline for the motor vehicle is calculated from the determined momentary transverse acceleration. A modified momentary target curve incline is calculated by weighting of the calculated target curve incline with a speed-dependent target curve incline weighting factor. The momentary roadway curvature is determined by additionally using a vehicle navigation system of the motor vehicle.

First claim

The invention claimed is:

1. A method for adjusting an incline of a motor vehicle chassis using a target curve incline of the motor vehicle determined during traveling of a curved roadway section, comprising the steps of:
a) determining a momentary transverse acceleration of the motor vehicle depending on a momentary speed of the motor vehicle and a momentary roadway curvature of the curved roadway section, wherein the momentary roadway curvature is determined by an optical detection system and a vehicle navigation system of the motor vehicle;
b) calculating a momentary target curve incline for the motor vehicle from the momentary transverse acceleration determined in step a);
c) calculating a modified momentary target curve incline by weighting the momentary target curve incline calculated in step b) with a speed-dependent target curve incline weighting factor; and
d) setting the chassis of the motor vehicle to said modified momentary target curve incline by individual adjustment of actuators respectively allocated to wheels of the motor vehicle.

2. The method according to claim 1 , wherein the momentary roadway curvature is determined by additionally using the vehicle navigation system by extraction of a roadway curvature from map data of the vehicle navigation system allocated to the curved roadway section being traveled, wherein the allocation occurs by using a momentary position of the motor vehicle provided by a position sensor of the vehicle navigation system.

3. A device for adjusting an incline of a motor vehicle chassis using a target curve incline of the motor vehicle determined during traveling of a curved roadway section, comprising:
a control device;
an optical detection system, wherein a momentary roadway curvature of a curved roadway section traveled by the motor vehicle is determinable by the optical detection system;
a vehicle navigation system which includes a data store having map data and a position sensor, wherein a momentary position of the motor vehicle is determinable by the vehicle navigation system; and
actuators respectively allocated to wheels of the motor vehicle;
wherein the control device:
determines the momentary roadway curvature of the curved roadway section by using the optical detection system in combination with the vehicle navigation system;
determines a momentary target curve incline for the motor vehicle from the momentary roadway curvature determined by the control device;
calculates a modified momentary target curve incline from the momentary target curve incline by weighting with a target curve incline weighting factor; and
controls the actuators to set a chassis of the motor vehicle to said modified momentary target curve incline by individual adjustment of said actuators.

Assignees

• Daimler Ag

Inventors

• Ammon Dieter
• Hainbuch Claus-Michael
• Rau Magnus

Classifications

• B60T8/17554

  specially adapted for enhancing stability around the vehicles longitudinal axle, i.e. roll-over prevention (road vehicle drive control systems for roll-over prevention otherwise than by controlling a particular sub-unit B60W30/04) · CPC title

• G01C21/26

  specially adapted for navigation in a road network · CPC title

• B60T8/17551 Primary

  determining control parameters related to vehicle stability used in the regulation, e.g. by calculations involving measured or detected parameters · CPC title

• B60W2030/043

  about the roll axis · CPC title

• B60W2556/50

  of positioning data, e.g. GPS [Global Positioning System] data · CPC title