Adaptive noise cancellation in a brake system
AssigneeFord Global Technologies, LLC
InventorsThomas Svensson, Harold John Felch
Life of this patent
Estimating the term…
Abstract
A method of adaptively canceling brake system noise in a vehicle may include monitoring for an occurrence of brake torque stick slip and determining, based on a table of critical parameters associated with brake noise production, when vehicle status information indicates the vehicle is in a critical region for brake noise production. The method may further include, responsive to the occurrence of the brake torque stick slip or the vehicle status information indicating the vehicle is in the critical region for brake noise production, initiating a change to brake force distribution between a front axle and a rear axle of the vehicle, and adaptively updating the table of critical parameters.
Claims20
A method of adaptively canceling brake system noise in a vehicle, the method comprising:
- determining, based on a table of critical parameters associated with brake noise production, when vehicle status information indicates the vehicle is in a critical region for brake noise production;
- responsive to the vehicle status information indicating the vehicle is in the critical region for brake noise production, preemptively initiating a change to brake force distribution between a front axle and a rear axle of the vehicle prior to initially monitoring for an occurrence of brake torque stick slip;
- and
- adaptively updating the table of critical parameters.
A vehicle control system comprising:
- a braking torque module operably coupled to one or more wheels of a vehicle to provide braking force or braking torque to the one or more wheels distributed between a front axle and a rear axle of the vehicle;
- and
- a noise canceller operably coupled to a sensor network to receive vehicle status information to:
- monitor for an occurrence of brake torque stick slip;
- determine, based on a table of critical parameters associated with brake noise production, when the vehicle status information indicates the vehicle is in a critical region for brake noise production;
- responsive initially only to the vehicle status information indicating the vehicle is in the critical region for brake noise production, initiate a change to brake force distribution between the front and rear axles of the vehicle;
- and
- adaptively update the table of critical parameters.
Dependencies are inferred from the claim text.