Back to results
US 9,463,873 B2Granted
Vehicle braking system having braking control and skid reduction functions
AssigneeThe Boeing Company
InventorsBruce Van Deventer, Erik L. Godo
Life of this patent
Estimating the term…
Abstract
Methods and means for reducing wear in electric or electro-hydraulic braking systems utilizing an adjustable (adaptive) filter, wherein the adaptive filter provides for rapid response during anti-skid operation and a smooth and filtered response during non-anti-skid operation.
Claims24
A method for braking comprising:
- (a) receiving a sequence of unfiltered braking command values comprising brake command values that are merged with anti-skid command values;
- (b) adaptively filtering said sequence of unfiltered braking command values to form filtered braking command values;
- and
- (c) controlling a brake in accordance with said filtered braking command values,
- wherein said adaptive filtering changes from a first mode to a second mode in response to a content of anti-skid command values exceeding a first specified threshold.
2 more elements
A method for braking comprising:
- (a) receiving a sequence of unfiltered braking command values comprising brake command values that are merged with anti-skid command values;
- (b) determining a signature of braking command values of said sequence of unfiltered braking command values received within a time window;
- (c) filtering received unfiltered braking command values to form filtered braking command values;
- (d) forming a weighted sum of said filtered and unfiltered braking command values using weighting factors which are a function of said signature of braking command values of said sequence of unfiltered braking command values received within a time window;
- and
- (e) controlling a brake in accordance with said weighted sum.
3 more elements
A method for braking comprising:
- (a) receiving a sequence of unfiltered braking command values comprising brake command values that are merged with anti-skid command values;
- (b) receiving a signal indicative of a transition from a brake command mode to an anti-skid command mode;
- (c) adaptively filtering said sequence of unfiltered braking command values to form filtered braking command values;
- and
- (d) controlling a brake in accordance with said filtered braking command values,
- wherein said adaptive filtering gradually changes modes from a first mode to a second mode over time in response to receipt of said signal indicative of a transition from a brake command mode to an anti-skid command mode.
3 more elements
A braking system comprising:
- a brake arranged for braking a wheel;
- an actuator controller coupled to said brake;
- a braking command source of a sequence of braking command values comprising brake command values that are merged with anti-skid command values;
- and
- adaptive filtering means for adaptively filtering said sequence of braking command values, said adaptive filtering means having an input coupled to said braking command source and an output coupled to said actuator controller,
- wherein said adaptive filtering means changes modes from a slow response mode to a different mode in response to receipt of information indicating that a content of anti-skid command values in said braking command values exceeds a specified threshold.
3 more elements
Dependencies are inferred from the claim text.