Slip/skid discrimination device, brake control system, and slip/skid discrimination method
AssigneeMitsubishi Electric Corporation
InventorsEtsuji Matsuyama, Shumpei Onodera, Naoto Tachibana
Life of this patent
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Abstract
A slip-and-skid determining device includes an axle speed decider, a reference axle speed decider, and a determiner. The axle speed decider decides, for each of a plurality of axles, an axle speed changeable based on a rotational speed of a wheel. The reference axle speed decider decides, based on the axle speed and a physical quantity changeable during travel of a railway vehicle, a reference axle speed in the vehicle. The determiner determines, based on comparison between the axle speed and the reference axle speed, whether any slip or skid of the wheel occurs.
Claims13
A slip-and-skid determining device provided for each of one or more vehicles included in a railway vehicle, comprising:
- axle speed deciding circuitry configured to decide, for each of a plurality of axles in a vehicle of the one or more vehicles, an axle speed changeable in accordance with a rotational speed of a wheel attached to each of the plurality of axles in the vehicle;
- reference axle speed deciding circuitry configured to decide, based on the axle speeds of the plurality of axles in the vehicle and a physical quantity changeable during travel of the railway vehicle, a reference axle speed in the vehicle;
- and
- determining circuitry configured to determine, based on comparison between the axle speed of one of the plurality of axles and the reference axle speed, whether any slip or skid of the wheel of the one of the plurality of axles occurs.
A slip-and-skid determining method performed by a slip-and-skid determining device provided for each of one or more vehicles included in a railway vehicle, comprising:
- deciding, for each of a plurality of axles in a vehicle of the one or more vehicles, an axle speed changeable in accordance with a rotational speed of a wheel attached to each of the plurality of axles in the vehicle;
- deciding a reference axle speed in the vehicle based on the axle speeds of the plurality of axles in the vehicle and a physical quantity changeable during travel of the railway vehicle;
- and
- determining, based on comparison between the axle speed of one of the plurality of axles and the reference axle speed, whether any slip or skid of the wheel of the one of the plurality of axles occurs.
Dependencies are inferred from the claim text.