Brake coefficient of friction (μ) estimation for prognostics and health management (PHM) and improved load balance (LB)
AssigneeGoodrich Corporation
InventorsMarc J Georgin, Matthew Ryan O'Neil
Life of this patent
Estimating the term…
Abstract
A method for controlling brake assemblies of a vehicle is provided. Receiving a deceleration of each wheel assembly of a plurality of wheel assemblies of the vehicle. Comparing the deceleration of each wheel assembly to an average deceleration of the plurality of wheel assemblies. Responsive to one or more of the deceleration of each wheel assembly of one or more wheel assemblies being outside a predetermined range of the average deceleration of the plurality of wheel assemblies, reporting a warning message to a maintenance crew to inspect one or more brake assemblies associated with the one or more wheel assemblies.
Claims17
A method for controlling brake assemblies of a vehicle, the method comprising:
- receiving a deceleration of each wheel assembly of a plurality of wheel assemblies of the vehicle;
- comparing the deceleration of each wheel assembly to an average deceleration of the plurality of wheel assemblies;
- responsive to one or more of the deceleration of each wheel assembly of one or more wheel assemblies being outside a predetermined range of the average deceleration of the plurality of wheel assemblies, reporting a warning message to a maintenance crew to inspect one or more brake assemblies associated with the one or more wheel assemblies;
- responsive to one or more of the deceleration of each wheel assembly of the one or more wheel assemblies being outside the predetermined range of the average deceleration of the plurality of wheel assemblies, comparing the deceleration of the one or more wheel assemblies with respect to the average deceleration of the plurality of wheel assemblies over a predetermined number of taxi events;
- calculating a trend of out of tolerance differences after the predetermined number of taxi events;
- and
- responsive to the trend being confirmed after the predetermined number of taxi events, reporting the warning message to the maintenance crew to inspect the one or more brake assemblies associated with the one or more wheel assemblies.
A braking system for controlling brake assemblies of a vehicle, the braking system comprising:
- a brake control unit, wherein the brake control unit is configured to:
- receive a deceleration of each wheel assembly of a plurality of wheel assemblies of the vehicle;
- compare the deceleration of each wheel assembly to an average deceleration of the plurality of wheel assemblies;
- responsive to one or more of the deceleration of each wheel assembly of one or more wheel assemblies being outside a predetermined range of the average deceleration of the plurality of wheel assemblies, report a warning message to a maintenance crew to inspect one or more brake assemblies associated with the one or more wheel assemblies;
- responsive to one or more of the deceleration of each wheel assembly of the one or more wheel assemblies being outside the predetermined range of the average deceleration of the plurality of wheel assemblies, compare the deceleration of each wheel assembly of the one or more wheel assemblies with respect to the average deceleration of the plurality of wheel assemblies over a predetermined number of taxi events;
- calculate a trend of out of tolerance differences after the predetermined number of taxi events;
- and
- responsive to the trend being confirmed after the predetermined number of taxi events, report the warning message to the maintenance crew to inspect the one or more brake assemblies associated with the one or more wheel assemblies.
A method for controlling brake assemblies of a vehicle, the method comprising:
- calculating an average wheel deceleration for a plurality of wheel assemblies;
- determining a deceleration of each wheel with respect to an average deceleration;
- and
- responsive to receiving a commanded brake wheel force, utilizing the deceleration of each wheel with respect to the average deceleration and the commanded brake wheel force to calculate at least one of an increase, a decrease, or a no change with respect to an amount of force to apply to a respective brake assembly associated with a respective wheel assembly of the plurality of wheel assemblies, wherein, responsive to calculating the increase in the amount of force to apply to the respective brake assembly, applying the commanded brake wheel force increased by the amount of force to the respective brake assembly.
Dependencies are inferred from the claim text.