Control method for stopping train at target point

Details Control method for stopping train at target point Control method for stopping train at target point

1980-07-10

1983-05-24

Groody, James J.

Railway switches and signals

Cab signal or train control

Speed-control systems

246187B, 364426, B61L 308

Patent

active

043846955

ABSTRACT:
An improved method for controlling the rate of deceleration and a point of stopping of a vehicle. Upon passing a first position marker, a first deceleration pattern is produced in an arithmetic circuit for stopping the train at a first predetermined point. Second and third deceleration patterns are produced when the vehicle passes a second position marker. In situations where the first deceleration pattern is a proper one, the vehicle velocity is subsequently conformed to the second deceleration pattern which controls the velocity of the vehicle at a lower deceleration rate than the first deceleration pattern, and stops the vehicle at a predetermined target point. However, in situations where an erroneous first deceleration pattern is produced such that the vehicle velocity is maintained at a higher level than either the first or second deceleration patterns, the velocity of the vehicle is subsequently conformed to the third deceleration pattern which is characterized by a high deceleration rate and will stop the vehicle at the target point.

REFERENCES:
patent: 3921946 (1975-11-01), Norton et al.
patent: 4066230 (1978-01-01), Nohmi et al.
patent: 4142700 (1979-03-01), Ubel
Control Engineering, Ito, Jan. 1961, pp. 90-93.

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