System and method for determining a mismatch between a model for a powered system and the actual behavior of the powered system
First Claim
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1. A system comprising:
- a coupler configured to be positioned between adjacent cars of a powered system that includes a train the coupler configured to be positioned in a slack state that includes one of a stretched slack state or a bunched slack state based upon separation of the adjacent cars;
a controller configured to be positioned within the locomotive of the powered system and to determine a mismatch of a model of the slack state for the coupler of the powered system and actual behavior of the powered system on a real time basis from a plurality of input parameters including at least one of a locomotive parameter, a track parameter, a train parameter, or a train stability state;
wherein the coupler is included in plural couplers of the powered system and the model is a lumped-mass model where the couplers positioned between the adjacent cars of the train are assumed permanently in one of the stretched slack state or the bunched slack state;
wherein the train stability state being one of a stable state or an unstable state, the stable state representative of the couplers being in the stretched slack state or the bunched slack state, the unstable state representative of a first one of the couplers being in the bunched slack state and a second one of the couplers being in the stretched slack state;
wherein the controller is configured to determine a jerk of the locomotive based on a time rate of change of acceleration of the locomotive, the acceleration based on a speed of the locomotive; and
wherein the controller is configured to determine the mismatch of the lumped-mass model on the real-time basis based upon at least two of the jerk, a current notch of an engine of the locomotive, and the train stability state being modified by a respective threshold amount within a designated time period.
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Abstract
A system is provided for determining a mismatch between a model for a powered system and the actual behavior of the powered system. The system includes a coupler positioned between adjacent cars of the powered system. The coupler is positioned in a stretched slack state or a bunched slack state based upon the separation of the adjacent cars. The system further includes a controller positioned within the powered system. The controller is configured to determine a mismatch of the model. A method is also provided for determining a mismatch between a model for a powered system and the actual behavior of the powered system.
102 Citations
14 Claims
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1. A system comprising:
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a coupler configured to be positioned between adjacent cars of a powered system that includes a train the coupler configured to be positioned in a slack state that includes one of a stretched slack state or a bunched slack state based upon separation of the adjacent cars; a controller configured to be positioned within the locomotive of the powered system and to determine a mismatch of a model of the slack state for the coupler of the powered system and actual behavior of the powered system on a real time basis from a plurality of input parameters including at least one of a locomotive parameter, a track parameter, a train parameter, or a train stability state; wherein the coupler is included in plural couplers of the powered system and the model is a lumped-mass model where the couplers positioned between the adjacent cars of the train are assumed permanently in one of the stretched slack state or the bunched slack state; wherein the train stability state being one of a stable state or an unstable state, the stable state representative of the couplers being in the stretched slack state or the bunched slack state, the unstable state representative of a first one of the couplers being in the bunched slack state and a second one of the couplers being in the stretched slack state; wherein the controller is configured to determine a jerk of the locomotive based on a time rate of change of acceleration of the locomotive, the acceleration based on a speed of the locomotive; and wherein the controller is configured to determine the mismatch of the lumped-mass model on the real-time basis based upon at least two of the jerk, a current notch of an engine of the locomotive, and the train stability state being modified by a respective threshold amount within a designated time period. - View Dependent Claims (2, 3, 4, 5)
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6. A system comprising:
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a coupler configured to be positioned between adjacent cars of a powered system that includes a train, the coupler configured to be positioned in a slack state that includes one of a stretched slack state or a bunched slack state based upon separation of the adjacent cars; a first sensor configured to be positioned within a locomotive of the train to measure a first parameter of the front locomotive; a second sensor positioned with the locomotive to measure a second parameter of the locomotive; and a controller configured to be positioned within the locomotive of the powered system and to determine a mismatch of a model of the slack state for the coupler of the powered system and actual behavior of the powered system on a real-time basis from a plurality of input parameters including at least one of a locomotive parameter, a track parameter, a train parameter, the mismatch based on at least one of a train stability state of the train, the first parameter, or the second parameter, the train stability state being one of a stable state or an unstable state, the stable state representative of the couplers being in the stretched slack state or the bunched slack state, the unstable state representative of a first one of the couplers being in the bunched slack state and a second one of the couplers being in the stretched slack state, wherein the coupler is included in plural couplers of the powered system and the model is a lumped-mass model where the couplers positioned between the adjacent cars of the train are assumed permanently in one of the stretched slack state or the bunched slack state; wherein the train travels on a rail along a predetermined route, and the controller is configured to switch between; an automatic mode in which the controller is configured to automatically take a corrective action for a predetermined amount of time, the corrective action being based on the mismatch determined by the controller; and a manual mode in which a locomotive operator is configured to manually input the corrective action. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14)
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Specification