Slipping detector system for vehicles

Details Slipping detector system for vehicles Slipping detector system for vehicles

1979-06-07

1981-11-03

Smith, Jerry

Boots, shoes, and leggings

318 52, G06F 1520, H02P 550

Patent

active

042989400

ABSTRACT:
A railway vehicle has a plurality of motors for driving a plurality of wheels respectively, which motors are controlled to produce the same current to attain the same torque for each motor. These current values are detected respectively and received alternately in time division manner. A current value received is stored until the next current value for the same motor is received. The current value newly received is compared with the immediately previously stored current value for the same motor and the error therebetween is detected. When the current variation for the motor is larger than a predetermined value, the slipping of the wheel driven by that motor is detected. Also a received current value is compared with the current values for the other motors, and if the error is larger than a predetermined value, the slipping of the wheel driven by the motor associated with the received current value is detected.

REFERENCES:
patent: 3737745 (1973-06-01), Chevaugeon et al.
patent: 3898937 (1975-08-01), Johnson
patent: 3982164 (1976-09-01), De Buhr et al.
patent: 4066300 (1978-01-01), Devlin
patent: 4095147 (1978-06-01), Mountz
patent: 4136303 (1979-01-01), Almquist et al.
patent: 4184203 (1980-01-01), Skarvada

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