Method and device for a smooth and timely deceleration or stop i

Details Method and device for a smooth and timely deceleration or stop i Method and device for a smooth and timely deceleration or stop i

1994-02-07

1995-12-12

Le, Mark T.

Railway switches and signals

Cab signal or train control

Speed-control systems

246 62, 246 72, 246 81, 246 87, 246182A, 246182R, 104292, 104300, B61L 100

Patent

active

054742676

ABSTRACT:
A method and device for effecting a fast but smooth deceleration or stopping of trains controlled under the automatic train control (ATC) system. Under ATC, a permitted maximum velocity is provided as an "ATC condition" to activate the brake system of the train if that velocity is exceeded. When it is necessary to alter the velocity of a train, a control center specifies a feeder section to have the ATC condition to be altered. Next, a substation corresponding to the specified feeder section is provided with notice about the alteration of the ATC condition. The notice includes the impending reduction of velocity. In response, the substation decelerates the train without using the ATC brake system provided on the train. When the train has been sufficiently slowed down such that the alteration of the ATC condition will not result in activation of the ATC brake system, the alteration of the ATC condition is then effected.

REFERENCES:
patent: 4459668 (1984-07-01), Inoue et al.
patent: 4495578 (1985-01-01), Sibley et al.
patent: 4556941 (1985-12-01), Zuber
patent: 4562543 (1985-12-01), Zuber et al.
patent: 4578754 (1986-03-01), Sahasrabudhe et al.
patent: 5239472 (1993-08-01), Long et al.

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