Method for proactive controlling of chassis components

Patent metadata

Field	Value
Publication number	US-9770959-B2
Application number	US-201515315980-A
Country	US
Kind code	B2
Filing date	May 29, 2015
Priority date	Jun 7, 2014
Publication date	Sep 26, 2017
Grant date	Sep 26, 2017

Abstract

In a method for controlling at least one component of a chassis of a vehicle, a parameterization of a reactive controller of the at least one component of the chassis is changed depending on a current certainty of sensor data of a roadway section to be driven detected by a sensor system, such that, when driving on the roadway section, in the case of increased uncertainty of the sensor data, the reactive controller controls with a lower reaction time with respect to a normal operation.

First claim

What is claimed is:

1. A method for controlling at least one component of a chassis of a vehicle, comprising:
with a sensor determining sensor data of a road section to be driven on by the vehicle;
calculating a certainty index of the sensor data as a function of a variance of the sensor data;
calculating an actual certainty of the sensor data as a function of the certainty index; and
changing a parameterization of a reactive controller of the at least one component of the chassis as a function of the actual certainty of the sensor data so that when the vehicle drives on the road section the reactive controller controls the at least one component with a reaction time that is shorter compared to a normal operation of the reactive controller, when the sensor data have an increased actual uncertainty, wherein the reactive controller controls the at least one chassis component as a function of at least one of an actual situation of the vehicle and an actual situation of a respective environment present during a drive of the vehicle on the road section at least temporarily by using a bandwidth and amplification which is increased at least 50% compared to the normal operation of the reactive controller, wherein the reactive controller is set to a base value in dependence on the sensor data.

2. The method of claim 1 , further comprising controlling the chassis proactively when the certainty index indicates that the sensor data are certain.

3. The method of claim 1 , wherein the sensor data are detected via at least one sensor selected from a group consisting of spring travel sensor, superstructure acceleration sensor, roll sensor and yaw sensor.

4. The method of claim 1 , further comprising linking the sensor data with GPS-data to form a dataset and transmitting the dataset to a server which provides further vehicles with corresponding data sets of potentially relevant road sections.

5. The method of claim 1 , wherein the at least one component of the chassis of the vehicle is selected from a group consisting of actuators, shock absorbers, spring travel limiters, pressure controllers, brake systems, electric motors, hydraulic cylinders and control devices.

6. A control device for arrangement in a vehicle, said control device parameterizes at least one reactive controller in dependence on a certainty of sensor data of a road section to be driven on detected by a sensor of the vehicle so that the at least reactive controller controls with a reaction time that is decreased compared to a normal operation of the reactive controller when the sensor data have a high uncertainty, wherein the uncertainty or certainty of the sensor data is calculable via a certainty index, and wherein the certainty index is calculable via a variance of the sensor data, wherein the reactive controller controls the at least one chassis component as a function of at least one of an actual situation of the vehicle and an actual situation of a respective environment present during a drive of the vehicle on the road section at least temporarily by using a bandwidth and amplification which is increased at least 50% compared to the normal operation of the reactive controller, wherein the reactive controller is set to a base value in dependence on the sensor data.

Assignees

• Audi Ag

Inventors

• Unger Andreas
• Göhrle Christoph

Classifications

• B60G2500/20

  Spring action or springs · CPC title

• B60G17/0165 Primary

  to an external condition, e.g. rough road surface, side wind · CPC title

• B60G2400/821

  Uneven, rough road sensing affecting vehicle body vibration · CPC title

• B60G2400/10

  Acceleration; Deceleration · CPC title

• B60G2400/0511

  Roll angle · CPC title