Adjustment of maximum brake pump speed based on rate of change of target deceleration
AssigneeFord Global Technologies, LLC
InventorsAndrew Denis Lewandowski, Jason Christopher Matthews, Charles Edward Uptain, Shane Larkin
Life of this patent
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Abstract
Method and apparatus are disclosed for adjustment of maximum brake pump speed based on rate of change of target deceleration. An example vehicle includes a brake pump having a maximum pump speed. The example vehicle also includes a vehicle decelerator to determine a target deceleration for autonomous deceleration and send a signal to the brake pump to decelerate the vehicle at the target deceleration. The example vehicle also includes a maximum speed regulator to determine a rate of change of the target deceleration and adjust the maximum pump speed based on the rate of change.
Claims14
A vehicle comprising:
- a brake pump having a maximum pump speed;
- a vehicle decelerator to:
- determine a target deceleration for autonomous deceleration;
- and
- send a signal to the brake pump to decelerate the vehicle at the target deceleration;
- and
- a maximum speed regulator to:
- determine a rate of change of the target deceleration;
- and
- adjust the maximum pump speed based on the rate of change by:
- increasing the maximum pump speed in response to determining the rate of change of the target deceleration is greater than a first threshold,
- decreasing the maximum pump speed in response to determining the rate of change of the target deceleration is less than a second threshold, the first threshold being greater than the second threshold, and
- maintaining the maximum pump speed in response to determining the rate of change of the target deceleration is between the first threshold and the second threshold.
A method for autonomous deceleration of a vehicle, the method comprising:
- determining, via a processor, a target deceleration for the vehicle;
- sending a signal to a brake pump to decelerate the vehicle at the target deceleration, the brake pump having a maximum pump speed;
- determining a rate of change of the target deceleration;
- and
- adjusting the maximum pump speed based on the rate of change by:
- increasing the maximum pump speed in response to determining the rate of change of the target deceleration is greater than a first threshold,
- decreasing the maximum pump speed in response to determining the rate of change of the target deceleration is less than a second threshold, the second threshold being less than the first threshold, and
- maintaining the maximum pump speed in response to determining the rate of change of the target deceleration is between the first threshold and the second threshold.
A vehicle comprising:
- a brake pump having a maximum pump speed (MPS);
- and
- a controller to:
- instruct the brake pump to decelerate the vehicle at a target deceleration;
- determine a rate of change (ROC) of the target deceleration;
- and
- responsive to determining:
- the ROC exceeds a first threshold, increase the MPS;
- the ROC is less than a second threshold, decrease the MPS;
- and
- the ROC is between the first and second thresholds, maintain the MPS.
Dependencies are inferred from the claim text.