摘要:
A control system for individually controlling power from a single voltage source to a plurality of motors is described. A chopper circuit, in conjunction with the control system, generates drive-pulses, which operates the IGBT switching devices to sequentially provide pulses to each motor.
摘要:
A method for determining slippage of at least one wheel of at least one vehicle having a motor and a processor that communicates velocity commands to the motor for varying a velocity of the vehicle is presented. The method includes determining an actual velocity of the vehicle over regular intervals; comparing, over regular intervals, the actual velocity of the vehicle to the expected velocity from the magnitude of the velocity commands to determine whether there is slip of the wheel of the vehicle; and reducing the magnitude of the velocity commands to equal approximately the actual velocity of the vehicle where there is slip of the wheel. A system and circuit carrying out the method are also presented.
摘要:
A method for determining slippage of at least one wheel of at least one vehicle having a motor and a processor that communicates velocity commands to the motor for varying a velocity of the vehicle is presented. The method includes determining an actual velocity of the vehicle over regular intervals; comparing, over regular intervals, the actual velocity of the vehicle to the expected velocity from the magnitude of the velocity commands to determine whether there is slip of the wheel of the vehicle; and reducing the magnitude of the velocity commands to equal approximately the actual velocity of the vehicle where there is slip of the wheel. A system and circuit carrying out the method are also presented.
摘要:
Ce dispositif de contrôle de l'adhérence d'une motrice d'un convoi ferroviaire électrique comprend un étage (18) de pilotage de l'alimentation du moteur de la motrice et un étage (20) de contrôle d'adhérence proprement dit délivrant à l'étage de pilotage (18) un signal de consigne élaboré à partir d'au moins une caractéristique de fonctionnement du moteur de manière à maîtriser le glissement des roues de la motrice. Il comporte en outre des moyens d'élaboration d'un signal (C_Corr) d'activation du dispositif de contrôle et des moyens (27) pour injecter le signal d'activation (C-Corr) dans le signal de consigne (Cons) de manière à lui faire délivrer un signal de consigne modifié.
摘要:
Die Erfindung betrifft ein Schleuderschutz-Verfahren zur Regelung der Antriebsdrehzahl eines Fahrzeugs während eines Schleuderzustandes, bei dem vorgeschlagen wird, zum optimierten und schnellen Ausregeln der Antriebsdrehzahl auf eine vorgegebene Solldrehzahl (N S ) bei Erkennen einer Störung des Kraftschlusses dem vorgegebenen Solldrehzahl-Signal (N S ) eine dynamische Regelung zur Bildung eines aktuellen Drehzahlsollwerts (N SOLL ) zu überlagern, welche insbesondere nach Beseitigung der Kraftschlusstörung den aktuellen Drehzahlsollwert (N SOLL ) entlang einer Exponentialfunktion auf die Solldrehzahl (N S ) ausregelt, wobei der aktuelle Drehzahlsollwert bei Beendigung der Störung (N E ; N R ) den Ausgangspunkt und die vorgegebene Solldrehzahl (N S ) die Asymptote der Exponentialfunktion bilden. Tritt während des Anfahrens über die Exponentialfunktion erneut ein Schleudern auf, so wird der aktuelle Drehzahlsollwert (N SOLL ) entlang einer Motor-Ab-Rampe abgesenkt, bis das Schleudern beendet ist und die vorgegebene Solldrehzahl (N S ; N S2 ) wieder über die E-Funktion angefahren. Der Vorgang wiederholt sich so lange bis die vorgegebene Solldrehzahl (N S ) erreicht ist.
摘要:
In order to minimize a calculation load and surely obtain a maximum adhesion torque, estimated adhesion torques are always stored, an maximum value is obtained from the stored plural estimated adhesion torques immediately before slip/ skid is detected when detecting the slip/ skid, and the maximum value is set as a maximum adhesion torque. The maximum adhesion torque immediately before the slip/ skid is detected is compared with a value of the estimated adhesion torque when the slip/ skid is detected. When the calculated value exceeds a threshold value, it is determined as a condition where an adhesion coefficient drastically drops, and a suppression/return ratio of the torque is switched to a lower value than that under a condition where the adhesion coefficient does not drastically drop. The value of the torque at the time of suppression or return is set to a smaller value to surely suppress the slip/ skid.
摘要:
In order to minimize a calculation load and surely obtain a maximum adhesion torque, estimated adhesion torques are always stored, an maximum value is obtained from the stored plural estimated adhesion torques immediately before slip/ skid is detected when detecting the slip/ skid, and the maximum value is set as a maximum adhesion torque. The maximum adhesion torque immediately before the slip/ skid is detected is compared with a value of the estimated adhesion torque when the slip/ skid is detected. When the calculated value exceeds a threshold value, it is determined as a condition where an adhesion coefficient drastically drops, and a suppression/return ratio of the torque is switched to a lower value than that under a condition where the adhesion coefficient does not drastically drop. The value of the torque at the time of suppression or return is set to a smaller value to surely suppress the slip/ skid.