Data processing: measuring – calibrating – or testing – Calibration or correction system – Speed
Patent
1998-07-20
2000-11-14
Noland, Thomas P.
Data processing: measuring, calibrating, or testing
Calibration or correction system
Speed
180209, 701 20, 701 82, B61F 1300, B61K 1300, G05D 300, G06F 1700
Patent
active
061482692
ABSTRACT:
A method and apparatus for wheel diameter calibration in a vehicle of the type having a plurality of independently powered wheel-axle sets which can be implemented as a forced calibration while the vehicle is in either a tractive effort or an electrical braking mode. The process includes the steps of determining if vehicle tractive effort would be effected if one wheel-axle set were disabled and, if not, selectively disabling one of the wheel-axle sets, calculating vehicle speed from a present value of wheel diameter for the disabled axle and wheel revolutions per unit time, establishing a true value of vehicle speed from an independent measurement, computing the error between calculated vehicle speed and the true value of vehicle speed, and adjusting the present value of wheel diameter so as to minimize the computed speed error.
REFERENCES:
patent: 3715572 (1973-02-01), Bennett
patent: 4243927 (1981-01-01), D'Atre
patent: 4347569 (1982-08-01), Allen et al.
patent: 4896090 (1990-01-01), Balek et al.
patent: 5740547 (1998-04-01), Kull et al.
"Inverter-Induction Motor Drive For Transit Cars," Plunkett, Plette; IEEE Transactions on Industry Applications, vol. 1A-13, Jan./Feb. 1977, pp. 26-37.
Kumar Ajith Kuttannair
Worden Bret Dwayne
Beuss James
Breedlove Jill
General Electric Company
Noland Thomas P.
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