Boots – shoes – and leggings
Patent
1994-10-11
1997-03-11
Teska, Kevin J.
Boots, shoes, and leggings
318 52, 318 66, 318 71, 180197, B61C 1508, H02P 550
Patent
active
056108192
ABSTRACT:
A traction enhancing system detects and corrects wheel slip and enhances wheel traction in a railroad locomotive having a plurality of wheel pairs for engaging a pair of rails and a traction motor operatively associated with each wheel pair. The locomotive includes an electrical source responsive to an applied level of excitation and is operatively coupled to the traction motors for controlling the power applied thereto. The traction enhancing system includes a plurality of current measuring devices adapted to measure current drawn by each traction motor, and a plurality of voltage measuring devices adapted to measure a voltage of each traction motor. A computer receives the current and voltage measurements and is configured to detect wheel slip between the wheel pairs and the rails by calculating a change in the current and voltage measured over a predetermined period of time. The change in current and voltage over time is compared to predetermined values and a reduction factor representative of the severity of the wheel slip is determined. The computer then reduces the level of excitation to the electrical source by an amount proportional to the reduction factor to eliminate the wheel slip. Power is then reapplied to the electrical source according to an S-shaped curve so that wheel slip does not reoccur.
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Durlin David L.
Mann Scott K.
G&G Locotronics, Inc.
Nguyen Tan
Teska Kevin J.
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