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US 11,654,876 B2Granted
Braking control system
AssigneeFaiveley Transport Italia S.P.A.
InventorsRoberto Tione, Matteo Frea, Luc Imbert
Life of this patent
Estimating the term…
Abstract
A service and emergency braking control system for at least one railway vehicle, including a plurality of braking control modules is provided. Each braking control module is equipped for: if, when achieving a determined braking torque value from an applied braking torque, an instantaneous deceleration value is lower than the target deceleration value, increasing the applied braking torque until the instantaneous deceleration value reaches the target deceleration value, or until the maximum available adhesion from an axle controlled by said braking control module is indicated.
Claims20
A braking control system, comprising:
- a plurality of braking control modules, each of the braking control modules configured to control an
- axle of a vehicle,
- receive a deceleration request signal sent to all of the braking control modules, the deceleration request signal indicating a deceleration target value of the vehicle that has to be reached, receive an instantaneous deceleration signal indicating an instantaneous deceleration value of the vehicle, and receive an adhesion signal indicating achievement of an upper level of available friction by the axle of the vehicle that is controlled by the respective braking control module,
- each of the braking control modules also configured to
- generate, independent from others of the braking control modules, a braking torque request signal according to the deceleration request signal and a weight signal indicative of a weight acting on the axle, a bogie of the vehicle, or a carriage of the vehicle, each of the braking control modules also configured to provide the braking torque request signal to a braking device of the vehicle that is associated with the axle controlled by the respective braking control module, the braking device configured to convert a requested value of the braking torque request signal to a braking torque having a determined braking torque value applied to the axle controlled by the respective braking control module to slow down the vehicle, wherein an applied braking torque reaches the determined braking torque value according to a first predetermined torque gradient,
- each of the braking control modules also configured to vary the requested value of the braking torque request signal to increase the applied braking torque converted by the braking device responsive to the instantaneous deceleration value being lower than the deceleration target value and until the instantaneous deceleration value indicated by the instantaneous deceleration signal received by the braking control module reaches the target deceleration value or until the adhesion signal indicates achievement of the upper level of available friction by the axle controlled by the respective braking control module, wherein the applied braking torque is increased in accordance with a second predetermined torque gradient.
3 more elements
A method, comprising:
- receiving a deceleration request signal, an instantaneous deceleration signal, and an adhesion signal at each of several braking control modules configured to separately control different axles of a vehicle, the deceleration request signal indicating a deceleration target value of the vehicle, the instantaneous deceleration signal indicating an instantaneous deceleration value of the vehicle, the adhesion signal indicating achievement of an upper level of available friction by the axle of the vehicle that is controlled by the braking control module;
- generating a braking torque request signal at each of the braking control modules according to the deceleration request signal and a weight signal indicative of a weight acting on the axle controlled by the respective braking control module, a bogie of the vehicle, or a carriage of the vehicle;
- providing the braking torque request signal to braking devices of the vehicle that are associated with the axles controlled by the braking control modules;
- converting a requested value of the braking torque request signal to a braking torque having a determined braking torque value applied to the axle controlled by the respective braking control module to slow down the vehicle, wherein an applied braking torque reaches the determined braking torque value according to a first predetermined torque gradient;
- and
- varying the requested value of the braking torque request signal to increase the applied braking torque converted by the braking device responsive to the instantaneous deceleration value being lower than the deceleration target value and until the instantaneous deceleration value indicated by the instantaneous deceleration signal received by the braking control module reaches the target deceleration value or until the adhesion signal indicates achievement of the upper level of available friction by the axle controlled by the respective braking control module, wherein the applied braking torque is increased in accordance with a second predetermined torque gradient.
3 more elements
A system, comprising:
- braking control modules configured to separately control braking devices of a vehicle, the braking control modules configured to receive a deceleration request signal, an instantaneous deceleration signal, and an adhesion signal, the deceleration request signal indicating a deceleration target value, the instantaneous deceleration signal indicating an instantaneous deceleration value, and the adhesion signal indicating achievement of an upper level of available friction by the braking devices,
- the braking control modules configured to separately generate braking torque request signals according to the deceleration request signal and a weight acting on the vehicle, wherein the braking control modules are configured to generate the braking torque request signals such that an applied braking torque reaches a determined braking torque value according to a first predetermined torque gradient,
- each of the braking control modules also configured to increase the applied braking torque converted by the braking device according to a second predetermined torque gradient responsive to the instantaneous deceleration value being lower than the deceleration target value until the instantaneous deceleration value indicated by the instantaneous deceleration signal reaches the target deceleration value or the adhesion signal indicates achievement of the upper level of available friction.
Dependencies are inferred from the claim text.