Slip-limiting control for rail vehicles

Details Slip-limiting control for rail vehicles Slip-limiting control for rail vehicles

B - Operations, Transporting

60

L

341/74

B60L 3/10 (2006.01)

Patent

CA 1230944

ABSTRACT A method for slip-limiting control on a rail vehicle and slip-limiting control device. For controlling or limiting slip, it is necessary to determine the actual speed of the rail vehicle. This presents problems in traction vehicles such as, for example, locomotives which only have driving wheels and no running wheels, especially if all driving wheels slip simultaneously. For the accurate determi- nation of the vehicle speed, the traction motor current for the associated motor is reduced for a short period, of about 3 seconds, at the driving wheel which is rearmost in the direction of motion, by means of a slip-reduction signal which is supplied to a slip-limiting controller which also reduces the speed of this driving wheel so that this wheel no longer slips and its peripheral wheel speed is equal to the vehicle speed. During a presettable long- term period of about 25 seconds, all slip-limiting controllers of the rail vehicle are preset with a speed reference signal (Vref) having a slight rise in speed so that the peripheral wheel speed of the driving wheel is somewhat greater than the vehicle speed but not great enough for the wheels to spin. A jolt detector is provided for initializing this measure.

463412

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