Method and device for performing open-loop control of a driver's cab mount

Patent metadata

Field	Value
Publication number	US-10442475-B2
Application number	US-201715655293-A
Country	US
Kind code	B2
Filing date	Jul 20, 2017
Priority date	Jul 26, 2016
Publication date	Oct 15, 2019
Grant date	Oct 15, 2019

Abstract

A method for performing open-loop or closed-loop control of a driver's cab mount of a motor vehicle, wherein the driver's cab mount has dampers whose damper force can be adjusted, wherein the motor vehicle can be operated in a first driving mode in which the motor vehicle automatically carries out vehicle guidance comprising both a longitudinal guidance operation and a transverse guidance operation of the motor vehicle, and in a second driving mode where the motor vehicle can be controlled by the driver, in which driving mode a driver of the motor vehicle is intended to carry out at least part of the vehicle guidance, wherein when the motor vehicle is operated in the first driving mode, the adjustable dampers of the driver's cab mount are actuated or adjusted in such a way that pitching or rolling movements are reduced compared to the second driving mode.

First claim

We claim:

1. A method for performing open-loop or closed-loop control of a driver's cab mount of a motor vehicle, wherein the driver's cab mount has dampers whose damper force can be adjusted, wherein the motor vehicle can be operated in an autonomous or partially autonomous first driving mode in which the motor vehicle automatically carries out, by means of a driver assistance system, vehicle guidance comprising both a longitudinal guidance operation and a transverse guidance operation of the motor vehicle; and
in a second driving mode wherein said motor vehicle is configured for at least partial control by a driver, such that the driver caries out at least part of the guidance wherein when the motor vehicle is operated in the first driving mode, the adjustable dampers of the driver's cab mount are actuated or adjusted in such a way that pitching or rolling movements are reduced compared to the second driving mode, and wherein,
a) adjustment of the damper force of the adjustable dampers of the driver's cab mount only according to the Skyhook method; and
b) adjustment of a damper force of an adjustable damper of a chassis mount of the motor vehicle only according to the groundhook method.

2. The method according to claim 1 , wherein when the motor vehicle is operated in the first driving mode a perceived longitudinal acceleration within a driver's cab in the case of longitudinal acceleration of the motor vehicle is at least partially reduced by inclination of the driver's cab forward by means of the driver's cab mount and is inclined rearward in the case of longitudinal deceleration.

3. The method according to claim 1 , wherein when the motor vehicle is operated in the first driving mode, perceived transverse acceleration within a driver's cab in the case of transverse acceleration of the motor vehicle is at least partially reduced by inclination of the driver's cab to the side by means of the driver's cab mount.

4. The method according to claim 1 , wherein when the vehicle is operated in the first driving mode,
a) an inclination of a driver's cab of the motor vehicle to the rear, which is generated in the case of uphill travel, is at least partially reduced by inclination of the driver's cab forward by means of the driver's cab mount; or
b) a forward inclination of the motor vehicle, which is generated in the case of downhill travel, is at least partially reduced by inclination of the driver's cab rearward by means of the driver's cab mount.

5. A control device for adapting a damper force of adjustable dampers of a driver's cab mount of a motor vehicle, the control device configured:
a) to detect whether the motor vehicle is being operated in an autonomous or partially autonomous first driving mode in which the motor vehicle automatically carries out, by means of a driver assistance system, vehicle guidance comprising both a longitudinal guidance operation and a transverse guidance operation of the motor vehicle, or is being operated in a second driving mode, wherein the second driving mode is configured for at least partial control by a driver, such that the driver of the motor vehicle carries out at least part of vehicle guidance, and
b) if the motor vehicle is being operated in the first driving mode, to actuate or adjust the adjustable dampers of the driver's cab mount in such a way that pitching or rolling movements are reduced compared to the second driving mode, wherein
adjustment of the damper force of the adjustable dampers of the driver's cab mount only according to the Skyhook method; and
adjustment of a damper force of an adjustable damper of a chassis mount of the motor vehicle only according to the groundhook method.

6. The control device of claim 5 , wherein the motor vehicle is a utility vehicle.

7. A motor vehicle, comprising:
a driver's cab;
a driver's cab mount having adjustable dampers; and
a control device configured:
a) to detect whether the motor vehicle is being operated in an autonomous or partially autonomous first driving mode in which the motor vehicle automatically carries out, by means of a driver assistance system, vehicle guidance comprising both a longitudinal guidance operation and a transverse guidance operation of the motor vehicle, or is being operated in a second driving mode, wherein the second driving mode is configured for at least partial control by a driver such that the driver of the motor vehicle carries out at least part of vehicle guidance, and
b) if the motor vehicle is being operated in the first driving mode, to actuate or adjust the adjustable dampers of the driver's cab mount in such a way that pitching and/or rolling movements are reduced compared to the second driving mode wherein,
adjustment of the damper force of the adjustable damper's of the driver's cab mount only according to the Skyhook method; and
adjustment of a damper force of an adjustable damper of a chassis mount of the motor vehicle only according to the groundhook method.

8. The motor vehicle of claim 7 , wherein the motor vehicle is a utility vehicle.

Assignees

• Man Truck & Bus Ag

Inventors

• Wagner Philipp
• Fleischhacker Jan
• Kohrs Christian

Classifications

• B62D33/0608

  pneumatic or hydraulic suspension · CPC title

• B60G2800/019

  Inclination due to load distribution or road gradient · CPC title

• B60G2400/96

  Presence, absence or inactivity of driver · CPC title

• B60G99/008

  Other suspension arrangements with fluid springs · CPC title

• B60G17/06 Primary

  Characteristics of dampers {, e.g. mechanical dampers}(B60G17/015 takes precedence) · CPC title