Method for controlling the speed of a vehicle

• US 20040030483A1
• Filed: 08/04/2003
• Published: 02/12/2004
• Est. Priority Date: 08/02/2002
• Status: Abandoned Application

• Current Assignee: Robert Bosch GmbH
• Original Assignee: Robert Bosch GmbH
• Inventors: Muehlbauer, Christian
• Application Number:
  US10/632,837
• Publication Number:
  US 20040030483A1
• Time in Patent Office: Days
• US Class Current: 701/93
• CPC Class Codes: B60K 31/0058 responsive to externally generated signalling
• CPC Class Codes: B60K 31/0066 responsive to vehicle path curvature
• CPC Class Codes: B60K 31/042 where at least one electrical quantity is set by the vehicle operator
• CPC Class Codes: B60W 2520/14 Yaw
• CPC Class Codes: B60W 2520/28 Wheel speed
• CPC Class Codes: B60W 2540/18 Steering angle
• CPC Class Codes: B60W 2552/05 Type of road, e.g. motorways, local streets, paved or unpaved roads
• CPC Class Codes: B60W 2552/20 Road profile, i.e. the change in elevation or curvature of a plurality of continuous road segments
• CPC Class Codes: B60W 2552/30 Road curve radius
• CPC Class Codes: B60W 2555/60 Traffic rules, e.g. speed limits or right of way
• CPC Class Codes: B60W 2555/80 Country specific, e.g. driver age limits or right hand drive
• CPC Class Codes: B60W 2556/50 of positioning data, e.g. GPS [Global Positioning System] data

Abstract

In a method for the control of the speed of a vehicle (1), the desired speed remains stored also after a deactivation of the control for a resumption of the control. For the resumption, the type of the roadway (5, 10, 15) currently driven upon by the vehicle is determined with respect to a maximum permissible speed and the desired speed is limited to this maximum permissible speed with the resumption of the control.

Claims

1. A method of controlling the speed of a vehicle, the method comprising the steps of:

maintaining a desired speed for a resumption of the control stored in a memory after a deactivation of the control;

for said resumption of said control, determining the type of roadway upon which said vehicle is traveling with respect to a permissible maximum speed; and

,

limiting said desired speed to said permissible maximum speed when resuming said control.

2. The method of claim 1, wherein a navigation device is used to determine said type of roadway.

3. The method of claim 1, wherein said type of roadway is determined in dependence upon a curve radius of said roadway.

4. The method of claim 3, wherein said curve radius is determined from a comparison of at least two wheel speeds of said vehicle and/or with a steering angle sensor.

5. The method of claim 1, wherein said type of roadway is determined in dependence upon the actual driving speed.

6. The method of claim 1, wherein said type of roadway is determined in dependence upon a maximum driving speed reached since at least a pregiven time after deactivation of said control.