Method and System for Compensating for Wheel Wear on a Train
First Claim
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1. A computerized method for determining a size of a train wheel comprising the steps of;
- inputting a speed from a positioning system installed on a train;
obtaining rotation information from a tachometer;
determining a wheel size based on the rotation information and the speed; and
outputting a signal indicating the wheel size.
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Abstract
A method and system for compensating for wheel wear uses position and/or speed information from an independent positioning system to measure some distance over which the train has traveled. Wheel rotation information is also collected over the distance. The wheel rotation information and distance and/or speed information are then use to determine the size of the train wheels. The method is performed periodically to correct for changes in wheel size over time due to wear so that the wheel rotation information can be used to determine train position and speed in the event of a positioning system failure.
66 Citations
22 Claims
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1. A computerized method for determining a size of a train wheel comprising the steps of;
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inputting a speed from a positioning system installed on a train;
obtaining rotation information from a tachometer;
determining a wheel size based on the rotation information and the speed; and
outputting a signal indicating the wheel size. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for determining a size of a train wheel comprising:
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a control unit;
a positioning system connected to the control unit; and
a tachometer connected to the control unit and configured to measure a rotation speed of a component on the train;
wherein the control unit is configured to perform the steps of;
receiving rotation information from the tachometer;
obtaining a speed from the positioning system;
determining a wheel size based on the rotation information and the speed; and
outputting a signal indicating the wheel size. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification