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US 8,046,146 B2Granted
Adaptive ABS control
AssigneeKelsey-Hayes Company
InventorsDouglas Charles Osborn, James Andrew Techentin, Jong Wook Lee
Life of this patent
Estimating the term…
Abstract
A method is provided for adaptively determining an anti-lock braking strategy that includes monitoring a distance differential of at least one target in proximity to a driven vehicle. An anti-lock braking strategy is determined as a function of the distance differential. The anti-locking braking strategy is applied as a function of the distance differential.
Claims15
A method for adaptively determining an anti-lock braking strategy for an anti-lock braking system, the method comprising the steps of:
- providing an electronic braking system including anti-lock braking functionality and stability control functionality, the anti-lock braking functionality responsive to a wheel skid by preventing a locked wheel condition, the stability control functionality responsive to vehicle instability by providing vehicle stability control through vehicle braking;
- sensing a wheel slip condition following a driver application of pressure to a vehicle brake pedal;
- activating the anti-lock braking functionality in response to detection of a wheel slip condition following the driver application of pressure to a vehicle brake pedal to determine a first anti-lock braking strategy in response to the sensed wheel slip condition;
- calculating a maximum distance to stop the vehicle;
- calculating a minimum distance to stop the vehicle;
- monitoring a distance differential of at least one target in proximity to a driven vehicle to determine an available distance to stop based on the distance differential;
- determining a second anti-lock braking strategy by blending anti-lock braking functionality and a vehicle stability control functionality where the blending is based upon an applicable one of the following three criteria:
- if the available distance to stop is greater than the calculated maximum distance to stop the vehicle,
- if the available distance to stop is less than calculated minimum distance to stop the vehicle, and
- if the available distance to stop is less than the maximum distance to stop but greater than the minimum distance to stop;
- and
- applying the second anti-lock braking strategy to enhance the stopping of the vehicle.
9 more elements
A vehicle control system comprising:
- an adaptive speed control system that monitors a speed of at least one target in relation to a driven vehicle;
- and
- a braking control system operating in an anti-lock braking control state for enhancing vehicle stability;
- said braking control system being operative to determine a first anti-lock braking strategy in response to a sensed wheel slip condition and said adaptive speed control system being operative to provide speed data to said braking control system, said braking control system being further operative to determine a distance differential to the at least one target, said braking control system also operative to determine and apply a second anti-lock braking strategy in response to the distance differential by adaptively modifying said first anti-lock braking strategy by blending anti-lock braking functionality and vehicle stability control functionality as a function of the distance differential where the blending is based on an applicable one of the following three criteria:
- if the available distance to stop is greater than a calculated distance to stop the vehicle at a maximum distance,
- if the available distance to stop is greater than a calculated distance to stop the vehicle at a minimum distance, and
- if the available distance to stop is less than the maximum distance to stop but greater than the minimum distance to stop;
- greater than a calculated distance to stop the vehicle at a minimum distance.
5 more elements
Dependencies are inferred from the claim text.