Controllers 1 Elastic waves 1 Electric traction 1 Field-oriented control 1 Machine vibrations 1 Proportional resonant controllers 1 Railroads 1 Rails 1 Railway traction 1 Railway traction drive 1 Railway traction drives 1 Slip control 1 Slip-stick phenomenon 1 Stick-slip Torsional vibration 1 Traction (friction) 1 Traction control 1 Traction drive 1 Vehicle wheels 1 Vibration suppression 1 Wheelsets 1 field-oriented control 1 proportional-resonant controller 1 slip control 1 slip-stick phenomenon 1 torsional vibrations 1