SYSTEM AND METHOD OF VEHICLE SYSTEM CONTROL
First Claim
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1. A method comprising:
- obtaining an off-board-based input speed of a vehicle system traveling along a curved segment of a first route, the off-board-based input speed obtained from data provided by an off-board device disposed off the vehicle system;
determining a heading of the vehicle system from the data provided by the off-board device; and
calculating a curvature of the curved segment of the first route using the off-board-based input speed and the heading of the vehicle system while the vehicle system travels along the curved segment of the first route.
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Abstract
A method for controlling a vehicle system includes obtaining an off-board-based input speed of a vehicle system traveling along a curved segment of a first route. The off-board-based input speed is obtained from data provided by an off-board device disposed off the vehicle system. The method also includes determining a heading of the vehicle system from the data provided by the off-board device and calculating a curvature of the curved segment of the first route using the off-board-based input speed and the heading of the vehicle system while the vehicle system travels along the curved segment of the first route.
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Citations
21 Claims
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1. A method comprising:
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obtaining an off-board-based input speed of a vehicle system traveling along a curved segment of a first route, the off-board-based input speed obtained from data provided by an off-board device disposed off the vehicle system; determining a heading of the vehicle system from the data provided by the off-board device; and calculating a curvature of the curved segment of the first route using the off-board-based input speed and the heading of the vehicle system while the vehicle system travels along the curved segment of the first route. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A vehicle control system comprising:
a vehicle controller configured to obtain an off-board-based input speed of a vehicle system traveling along a curved segment of a first route, the off-board-based input speed obtained from data provided by an off-board device disposed off the vehicle system, the vehicle controller also configured to determine a heading of the vehicle system from the data provided by the off-board device and calculate a curvature of the curved segment of the first route using the off-board-based input speed and the heading of the vehicle system while the vehicle system travels along the curved segment of the first route. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A method comprising:
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receiving positional data of a vehicle system onboard the vehicle system, the positional data representative of locations and headings of the vehicle system along a curved segment of a route; and calculating a curvature of the curved segment of the route using a rate of change in the headings of the vehicle system and a velocity of the vehicle system that is derived from the locations of the vehicle system along the curved segment of the route. - View Dependent Claims (19, 20)
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21. A method comprising:
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obtaining an off-board-based input speed of a vehicle system traveling along a route, the off-board-based input speed obtained from data provided by an off-board device disposed off the vehicle system; determining a rotation speed of a first wheel of the vehicle system; calculating an estimated diameter of the first wheel based on the off-board-based input speed and the rotation speed during travel of the vehicle system along the route; and at least one of; modifying an operator-measured reference diameter of the first wheel to match or be closer to the estimated diameter, wherein the operator-measured reference diameter is used to calculate an onboard-based speed of the vehicle system and the onboard-based speed of the vehicle system is used to control tractive effort generated by the vehicle system; alerting an operator of the vehicle system to measure the operator-measured reference diameter responsive to the estimated diameter differing from the operator-measured reference diameter by at least a non-zero threshold distance; alerting the operator of the vehicle system that an inflated pressure of the first wheel is decreasing; alerting the operator of the vehicle system that the inflated pressure of the first wheel indicates an impending flat tire;
oralerting the operator of the vehicle system that the inflated pressure of the first wheel indicates that the first wheel is flat.
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Specification