Railway switches and signals – Cab signal or train control – Speed-control systems
Patent
1974-07-17
1976-03-30
Blix, Trygve M.
Railway switches and signals
Cab signal or train control
Speed-control systems
104 26A, B61B 100
Patent
active
039469735
ABSTRACT:
A control algorithm developed for the master, intermediate, and group retarders of a classification yard enables control of the speed of car cuts in the switching area to achieve predetermined constant running times between the hump and the entrance into the assigned bowl track. Said another way, the retarders are controlled to maintain the same time spacing between cut centers, while moving through the switching area, as established by the humping rate. This reduces the number of misroutes due to catch-up with a preceding cut yet allows a constant humping speed. Various cut parameters, cut speeds, and curve and tangent track rolling resistances of each cut are measured and used as needed in determining the required exit for the cuts from the retarders. A different control algorithm for the tangent point regarders, one located in each bowl track, controls the speed of cuts assigned to that storage track, in accord with entry speed, cut parameters, track conditions, etc., in a manner to assure positive coupling, within a predetermined safe coupling speed range, to previously stored cars. In the preferred embodiment, a process control digital computer determines the required exit speeds and executes the tangent point retarder speed control using the developed algorithms.
REFERENCES:
patent: 3175082 (1965-03-01), Mishelevich
patent: 3268725 (1966-08-01), Auer
patent: 3283146 (1966-11-01), Berti
patent: 3844514 (1974-10-01), DiPaola
Railway Age, July 22, 1957, "Only Velac is Fully Automatic".
Railway Age, July 22, 1957, "Classification Yard System".
Railway Signalling and Communications, Sept., 1957, "Automation Yard Control".
Budway Raymond J.
McGlumphy George F.
Blix Trygve M.
Eisenzopf Reinhard J.
McIntire, Jr. R. W.
Westinghouse Air Brake Company
Williamson, Jr. A. G.
LandOfFree
Retarder control system for automatic railroad classification ya does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Retarder control system for automatic railroad classification ya, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Retarder control system for automatic railroad classification ya will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-516714