Adaptive cruise control acceleration rate control
First Claim
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1. An adaptive cruise control system for a host vehicle, comprising:
- a sensor configured to detect a vehicle in front of the host vehicle; and
a controller receiving an indication of a detected vehicle from the sensor, the controller configured tomaintain a speed of the host vehicle at a desired speed,determine a speed of the detected vehicle relative to the host vehicle,adjust an acceleration rate of the host vehicle based on the relative speedwherein the controller reduces the acceleration rate a first amount when the relative speed indicates the host vehicle is traveling more than a predetermined threshold faster than the detected vehicle, and the controller reduces the acceleration rate a second amount when the relative speed indicates the host vehicle is traveling more than the predetermined threshold faster than two or more detected vehicles.
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Abstract
An adaptive cruise control system for a host vehicle. The adaptive cruise control system includes a sensor and a controller. The sensor is configured to detect a vehicle in front of the host vehicle. The controller receives an indication of the detected vehicle from the sensor and is configured to maintain a speed of the host vehicle at a desired speed, to determine a speed of the detected vehicle relative to the host vehicle, and adjust an acceleration rate of the host vehicle based on the relative speed.
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Citations
14 Claims
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1. An adaptive cruise control system for a host vehicle, comprising:
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a sensor configured to detect a vehicle in front of the host vehicle; and a controller receiving an indication of a detected vehicle from the sensor, the controller configured to maintain a speed of the host vehicle at a desired speed, determine a speed of the detected vehicle relative to the host vehicle, adjust an acceleration rate of the host vehicle based on the relative speed wherein the controller reduces the acceleration rate a first amount when the relative speed indicates the host vehicle is traveling more than a predetermined threshold faster than the detected vehicle, and the controller reduces the acceleration rate a second amount when the relative speed indicates the host vehicle is traveling more than the predetermined threshold faster than two or more detected vehicles. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of operating an adaptive cruise control system for a host vehicle, the method comprising:
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obtaining, by the adaptive cruise control system, an indication of a desired speed for the host vehicle; accelerating, by the adaptive cruise control system, the host vehicle at a rate when a speed of the host vehicle is less than the desired speed; operating, by the adaptive cruise control system, the host vehicle at a speed substantially equal to the desired speed; detecting, by the adaptive cruise control system, a vehicle in front of the host vehicle; determining, by the adaptive cruise control system, a speed of the vehicle relative to the speed of the host vehicle; reducing, by the adaptive cruise control system, the rate a first amount when the relative speed indicates the host vehicle is traveling more than a predetermined threshold faster than the detected vehicle; detecting, by the adaptive cruise control system, a second vehicle in front of the host vehicle; determining, by the adaptive cruise control system, a speed of the second vehicle relative to the speed of the host vehicle; and reducing, by the adaptive cruise control system, the rate a second amount when the relative speeds indicate the host vehicle is traveling more than the predetermined threshold faster than the detected vehicle and the second detected vehicle. - View Dependent Claims (11, 12, 13, 14)
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Specification