Westinghouse Electric Corporation

Pierre A Zuber

Habib Dadpey

Richard S Rhoton

Robert J DiSilvestro

Norman W May

Mario Rogers

Arum P Sahasrabudhe

Antonia C Merlo

Fernando A Cirillo

A passenger vehicle is provided for movement along a track having an input speed command including ONE and ZERO information components to control the vehicle speed. A first control apparatus including at least a first microprocessor is responsive to the ONE and ZERO information components for providing first and second speed error signals. A second control apparatus including at least a second microprocessor is responsive to the ONE and ZERO information components for providing third and fourth speed error signals the first control apparatus compares the first, second, third and fourth speed error signals for controlling the vehicle and the second control apparatus compares the first, second, third and fourth speed error signals for controlling the vehicle.

Vehicle speed control apparatus and method

A passenger vehicle speed control apparatus and method are operative with a track providing an input speed command having ONEs and ZEROs information components. At least two programmed microprocessors operate with the vehicle and redundantly decode the ONEs and ZEROs input speed command signal components through operation of a fixed frequency filter for each of a plurality of frequency pairs and a variable frequency filter tuned to the frequency of the fixed filter having the highest amplitude signal component for determining a speed command signal to control the movement speed of the vehicle.

The speed of a vehicle is controlled in response to a new speed command lower than a previous speed command such that a safe brake speed profile reference is provided for increasing the average speed of the train in relation to the new speed command and before the new speed command controls the vehicle speed. A sensed vehicle acceleration is compared with a known safe acceleration to determine a speed error and a distance error to establish a critical velocity for the vehicle, which is used to provide an open loop brake control to merge the train speed in relation to a provided safe brake profile before the vehicle speed can again be controlled in relation to the new speed command.

Vehicle brake control apparatus and method

A speed control system for a passenger vehicle provides a predetermined brake mode operation to control the vehicle speed when the vehicle speed plus a determined speed offset responsive to a calculated effort request signal is equal to or greater than a desired program stop speed, and then compares the calculated effort request signal with a predetermined value of the effort request signal to control the vehicle speed in response to the calculated effort request signal.

A passenger vehicle speed control apparatus operative with a track providing an input speed command having ONE and ZERO information components. Two programmed microprocessors operate through dynamic serial link apparatus for comparing a speed command signal from each information component and for comparing a speed error signal from each information component to provide a vital enablement of the vehicle propulsion motor apparatus.

There is disclosed a speed control apparatus and method for a passenger vehicle moving along a track in response to an input command speed, which produces fewer operative changes between the brake mode and the power mode for an improved speed maintaining control of the vehicle.

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Baldwin, PA, United States of America

Pierre A Zuber