Automatic time headway setting for adaptive cruise control system
AssigneeGM Global Technology Operations LLC
InventorAlexander Kade
Life of this patent
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Abstract
An adaptive cruise control system automatically sets a desired headway value upon system initiation. If a preceding vehicle is not detected the desired headway is established at a predetermined value. If a preceding vehicle is detected the control compares the actual headway to a predetermined minimum value and predetermined maximum value to select a desired headway. Following the desired headway value being established, the value is stored in the control and the adaptive cruise control system begins customary operations.
Claims17
An adaptive cruise control system for a vehicle comprising:
- at least one switch to provide a user input;
- a sensor to detect a distance from an object in a path of the vehicle;
- and
- a control to determine and maintain a desired headway between the vehicle and the object based upon the user input and the detected distance.
A method for setting an adaptive cruise control system comprising:
- initiating the adaptive cruise control system with at least one user input;
- detecting an object in a vehicle path with a sensor;
- calculating an actual headway between the object and the vehicle based upon data from the sensor;
- determining a desired headway based upon the actual headway to maintain a desired distance between the vehicle and the object;
- and
- setting the desired headway based upon the determining the desired headway.
A method for setting a headway in adaptive cruise control system comprising:
- initiating the adaptive cruise control system with a user input;
- detecting an object in a vehicle path with a sensor;
- comparing an actual headway between the object and the vehicle to a predetermined minimum time and a predetermined maximum time;
- and
- setting a desired headway to the predetermined minimum when the actual headway is less then the predetermined minimum, setting the desired headway to the predetermined maximum when the actual headway is more then the predetermined maximum, and setting the desired headway to the actual headway when the actual headway is more then the predetermined minimum and less than the predetermined maximum.
Dependencies are inferred from the claim text.