Locomotive wheel speed control
First Claim
Patent Images
1. A method for controlling a wheel speed of a locomotive comprising:
- determining an estimated wheel speed for a desired wheel set of a locomotive responsive to a locomotive operating parameter indicative of an actual wheel speed of the desired wheel set;
generating a first adjustment parameter based on an operating condition of the locomotive; and
applying the first adjustment parameter to the estimated wheel speed for generating a first adjusted estimated wheel speed signal used as a first input for controlling a wheel speed of at least one of the desired wheel set and the other wheel sets of the locomotive;
determining a reference wheel speed from among wheel speeds of one or more of other wheel sets of the locomotive; and
using the reference wheel speed to generate the first adjustment parameter.
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Accused Products
Abstract
A method for controlling a wheel speed of a locomotive includes determining an estimated wheel speed (52) for a desired wheel set of a locomotive responsive to a locomotive operating parameter indicative of an actual wheel speed of the desired wheel set. The method also includes generating a first adjustment parameter (e.g., 46) based on an operating condition of the locomotive, and then applying the first adjustment parameter to the estimated wheel speed for generating a first adjusted estimated wheel speed signal (54) used as a first input for controlling a wheel speed of at least one of the desired wheel set and the other wheel sets of the locomotive.
18 Citations
23 Claims
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1. A method for controlling a wheel speed of a locomotive comprising:
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determining an estimated wheel speed for a desired wheel set of a locomotive responsive to a locomotive operating parameter indicative of an actual wheel speed of the desired wheel set; generating a first adjustment parameter based on an operating condition of the locomotive; and applying the first adjustment parameter to the estimated wheel speed for generating a first adjusted estimated wheel speed signal used as a first input for controlling a wheel speed of at least one of the desired wheel set and the other wheel sets of the locomotive; determining a reference wheel speed from among wheel speeds of one or more of other wheel sets of the locomotive; and using the reference wheel speed to generate the first adjustment parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for controlling a wheel speed of a locomotive comprising:
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determining an estimated wheel speed for a desired wheel set of a locomotive responsive to a locomotive operating parameter indicative of an actual wheel speed of the desired wheel set; generating a first adjustment parameter based on an operating condition of the locomotive; and applying the first adjustment parameter to the estimated wheel speed for generating a first adjusted estimated wheel speed signal used as a first input for controlling a wheel speed of at least one of the desired wheel set and the other wheel sets of the locomotive; and determining a reduced wheel speed from among wheel speeds of other wheel sets of the locomotive and using the reduced wheel speed to generate a second adjustment parameter when the locomotive is in a braking condition. - View Dependent Claims (12)
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13. A method for controlling a wheel speed of a locomotive comprising:
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determining an estimated wheel speed for a desired wheel set of a locomotive responsive to a locomotive operating parameter indicative of an actual wheel speed of the desired wheel set; generating a first adjustment parameter based on an operating condition of the locomotive; and applying the first adjustment parameter to the estimated wheel speed for generating a first adjusted estimated wheel speed signal used as a first input for controlling a wheel speed of at least one of the desired wheel set and the other wheel sets of the locomotive; generating a second adjustment parameter based on an operating condition of the locomotive; and applying the second adjustment parameter to the estimated wheel speed for generating a second adjusted estimated wheel speed signal used as a second input for controlling a wheel speed of at least one of the desired wheel set and the other wheel sets of the locomotive.
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14. A method for controlling a wheel speed of a locomotive comprising:
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determining an estimated wheel speed for a desired wheel set of a locomotive responsive to a locomotive operating parameter indicative of an actual wheel speed of the desired wheel set; generating an adjustment parameter based on a relationship between locomotive operating parameter indicative of an actual wheel speed of at least one other wheel set of the locomotive and a measured wheel speed of the least one other wheel set of the locomotive; and applying the adjustment parameter to the estimated wheel speed for generating an adjusted estimated wheel speed signal used as an input for controlling a wheel speed of at least one of the desired wheel set and the other wheel sets of the locomotive; wherein the motor operating relationship comprises a transfer function corresponding to a motor operating parameter of the at least one other wheel set versus a measured wheel speed of the at least one other wheel set.
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15. A method for controlling a wheel speed of a locomotive comprising:
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determining an estimated wheel speed for a desired wheel set of a locomotive responsive to a locomotive operating parameter indicative of an actual wheel speed of the desired wheel set; generating an adjustment parameter based on a relationship between locomotive operating parameter indicative of an actual wheel speed of at least one other wheel set of the locomotive and a measured wheel speed of the least one other wheel set of the locomotive; and applying the adjustment parameter to the estimated wheel speed for generating an adjusted estimated wheel speed signal used as an input for controlling a wheel speed of at least one of the desired wheel set and the other wheel sets of the locomotive; wherein the at least one other wheel set comprises a wheel set having an operating parameter closest to the operating parameter of the desired wheel set.
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16. A method for controlling a wheel speed of a locomotive comprising:
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determining an estimated wheel speed for a desired wheel set of a locomotive responsive to a locomotive operating parameter indicative of an actual wheel speed of the desired wheel set; generating an adjustment parameter based on a relationship between locomotive operating parameter indicative of an actual wheel speed of at least one other wheel set of the locomotive and a measured wheel speed of the least one other wheel set of the locomotive; and applying the adjustment parameter to the estimated wheel speed for generating an adjusted estimated wheel speed signal used as an input for controlling a wheel speed of at least one of the desired wheel set and the other wheel sets of the locomotive; wherein the motor operating relationship further comprises an average transfer function corresponding to motor operating parameters of at least some of the other wheel sets versus measured wheel speeds of the at least some of the other wheel sets.
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17. A method for controlling a wheel speed of a locomotive comprising:
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determining an estimated wheel speed for a desired wheel set of a locomotive responsive to a locomotive operating parameter indicative of an actual wheel speed of the desired wheel set; generating an adjustment parameter based on a relationship between locomotive operating parameter indicative of an actual wheel speed of at least one other wheel set of the locomotive and a measured wheel speed of the least one other wheel set of the locomotive; and applying the adjustment parameter to the estimated wheel speed for generating an adjusted estimated wheel speed signal used as an input for controlling a wheel speed of at least one of the desired wheel set and the other wheel sets of the locomotive; wherein the motor operating relationship further comprises an median transfer function corresponding to motor operating parameters of at least some of the other wheel sets verses measured wheel speeds of the at least some of the other wheel sets.
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18. A method for controlling a wheel speed of a locomotive comprising;
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determining an estimated wheel speed for a desired wheel set of a locomotive responsive to a locomotive operating parameter indicative of an actual wheel speed of the desired wheel set; generating an adjustment parameter based on a relationship between locomotive operating parameter indicative of an actual wheel speed of at least one other wheel set of the locomotive and a measured wheel speed of the least one other wheel set of the locomotive; applying the adjustment parameter to the estimated wheel speed for generating an adjusted estimated wheel speed signal used as an input for controlling a wheel speed of at least one of the desired wheel set and the other wheel sets of the locomotive; and substituting the adjusted estimated wheel speed signal for a measured wheel speed signal provided to a locomotive wheel speed control system.
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19. A method for controlling a wheel speed of a locomotive comprising:
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determining estimated wheel speeds for at least some wheel sets of a locomotive responsive to respective operating parameters of motors powering the wheel sets; generating a first wheel speed control signal based on the estimated wheel speeds; generating a second wheel speed control signal based on measured wheel speeds of at least some of the wheel sets; using at least one of the first and second wheel speed control signals as an input for controlling a wheel speed of at least one wheel set of the locomotive. - View Dependent Claims (20, 21, 22)
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23. A method for controlling a wheel speed of a locomotive comprising:
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determining an estimated wheel speed for a wheel set of a locomotive having a malfunctioning speed sensor responsive to a locomotive operating parameter; using speed sensor sensed wheel speeds of other wheel sets of the locomotive having functioning speed sensors to generate a wheel speed adjustment parameter; and ignoring the estimated wheel speed when generating the wheel speed adjustment parameter.
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Specification