Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Railway vehicle
Reexamination Certificate
2005-12-27
2005-12-27
Louis-Jacques, Jacques H. (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Railway vehicle
C701S019000, C701S204000, C701S205000, C701S096000, C246S18200B, C246S1820AB, C104S299000, C104S300000, C104S301000
Reexamination Certificate
active
06980894
ABSTRACT:
The present invention provides methods for preventing low train voltages and managing interference, thereby improving the efficiency, reliability, and passenger comfort associated with commuter trains. An algorithm implementing neural network technology is used to predict low voltages before they occur. Once voltages are predicted, then multiple trains can be controlled to prevent low voltage events. Further, algorithms for managing inference are presented in the present invention. Different types of interference problems are addressed in the present invention such as “Interference During Acceleration”, “Interference Near Station Stops”, and “Interference During Delay Recovery.” Managing such interference avoids unnecessary brake/acceleration cycles during acceleration, immediately before station stops, and after substantial delays. Algorithms are demonstrated to avoid oscillatory brake/acceleration cycles due to interference and to smooth the trajectories of closely following trains. This is achieved by maintaining sufficient following distances to avoid unnecessary braking/accelerating. These methods generate smooth train trajectories, making for a more comfortable ride, and improve train motor reliability by avoiding unnecessary mode-changes between propulsion and braking. These algorithms can also have a favorable impact on traction power system requirements and energy consumption.
REFERENCES:
patent: 3575594 (1971-04-01), Elcan
patent: 3835950 (1974-09-01), Asano et al.
patent: 4150417 (1979-04-01), Darrow et al.
patent: 4235402 (1980-11-01), Matty et al.
patent: 5065963 (1991-11-01), Usui et al.
patent: 5293632 (1994-03-01), Novakovich et al.
patent: 5340062 (1994-08-01), Heggestad
patent: 5346163 (1994-09-01), Momma et al.
patent: 5366183 (1994-11-01), Gill
patent: 5390880 (1995-02-01), Fukawa et al.
patent: 5452870 (1995-09-01), Heggestad
patent: 5487516 (1996-01-01), Murata et al.
patent: 5623413 (1997-04-01), Matheson et al.
patent: 5647562 (1997-07-01), Lumbis et al.
patent: 5738311 (1998-04-01), Fernandez
patent: 5813635 (1998-09-01), Fernandez
patent: 5828979 (1998-10-01), Polivka et al.
patent: 5890682 (1999-04-01), Welk
patent: 5936517 (1999-08-01), Yeh
patent: 5947423 (1999-09-01), Clifton et al.
patent: 6125311 (2000-09-01), Lo
patent: 6135396 (2000-10-01), Whitfield et al.
patent: 6144901 (2000-11-01), Nickles et al.
patent: 6154735 (2000-11-01), Crone
patent: 6179252 (2001-01-01), Roop et al.
S.P. Gordon et al., “Coordinated Train Control and Energy Management Control Strategies”, IEEE, Apr., 1998, pp. 165-176.
Evans John A.
Gordon Susanna P.
Louis-Jacques Jacques H.
Pillsbury Winthrop Shaw & Pittman LLP
San Francisco Bay Area Rapid Transit
LandOfFree
Method of managing interference during delay recovery on a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of managing interference during delay recovery on a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of managing interference during delay recovery on a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3490310