摘要:
La présente invention propose un convertisseur de tension (1) comprenant un module de commande (2) adapté pour fournir un signal de contrôle (20) et un module de puissance (3) adapté pour recevoir le signal de contrôle (20) et piloter des phases d'un bobinage, un terminal d'alimentation (11) destiné à être connecté à une batterie du véhicule, le convertisseur de tension (1) comprenant également un moyen (4) adapté pour déterminer un courant d'alimentation (Idc) aux bornes du terminal d'alimentation (11) dudit convertisseur de tension, le module de commande (2) comprenant un module de calcul (5) adapté pour établir une consigne de courant (Idc*) en fonction d'une consigne de couple (Torque*), le module de commande (2) comprenant également un module de régulation stator (6) adapté pour générer le signal de contrôle (20) du module de puissance en fonction du courant d'alimentation (Idc) et de la consigne de courant (Idc*).
摘要:
A conveying driving device of the invention includes a first motor (210) which transmits power to a drive shaft (171a) of a roller (171); a second motor (220) which transmits power to the drive shaft along with the first motor at a torque smaller than that of the first motor; and a controller (110) which sets each of drive current setting values of the first motor and the second motor so that a total value of a consumption current of the first motor and the second motor becomes minimal in a steady state in which the roller rotates at a constant setting speed.
摘要:
A method and a circuit arrangement are described by means of which a stepper motor can be operated by an adaptive control across a broad rotational speed range, including standstill, in which the motor is electrically fixed in a specific rotational position and with high precision and running smoothness corresponding to a predefined motor current progression. This is essentially achieved in that the motor is operated in a low rotational speed range, including standstill, using a voltage-controlled or voltage-regulated first operating mode, and in a higher or high rotational speed range using a voltage-controlled second operating mode.
摘要:
Die Erfindung betrifft ein Verfahren zur Ansteuerung eines Schrittmotors, bei dem Statorspulen des Schrittmotors durch eine Steuerelektronik sequentiell derart bestromt werden, dass ein rotierendes elektromagnetisches Feld entsteht, wobei bei der Bestromung einer gegebenen Statorspule der Strom durch deren Windungen durch die Steuerelektronik zunächst auf einen definierten Strom-Sollwert gesteigert wird und, nachdem der Sollwert erreicht ist, der Strom gechoppert wird, indem der von der Steuerlektronik bereitgestellte Stromfluss durch die Windungen wiederholt für eine konstante Zeitspanne abgeschaltet und anschließend ein Chopper-Impuls erfolgt, während dessen der von der Steuerlektronik bereitgestellte Stromfluss wieder eingeschaltet wird, bis der Strom-Sollwert wieder erreicht ist, wobei die Steuerelektronik die durch die Zeitdauer, die benötigt wird, um nach dem Wiedereinschalten des Stromflusses den Strom-Sollwert wieder zu erreichen, definierte Breite jedes Chopper-Impulses mit einer vorgebbaren Referenz-Zeitdauer vergleicht und mit der Bestromung der als nächstes zu bestromenden Statorspule beginnt, sobald die Breite des Chopper-Impulses, erstmals die Referenz-Zeitdauer unterschreitet, bei dem die Referenz-Zeitdauer während der Ansteuerung des Schrittmotors an die Arbeitsbedingungen des Schrittmotors angepasst wird.
摘要:
A magnetic motor is obtained which is free from pass-through current, and which can achieve high output torque, stable rotation and high efficiency. The motor comprises rotors 4, 5 having permanent magnets 12 and rotatably disposed around a rotating axis, a magnetic sensor 25 disposed at a periphery of the rotors and a plurality of electro-magnetic coils 10, and control means which controls electric current to the electro-magnetic coils 10 based on detection of magnetism from the permanent magnets 12 by means of the magnetic sensor 25. The rotor is equidistantly divided in a circumferential direction into a plurality of regions, the number of which is the same as that of the electro-magnetic coils 10. Each region comprises a portion wherein a plurality of permanent magnets 12 are disposed in a circumferential direction and a portion wherein no permanent magnets 12 are disposed. Each permanent magnet is disposed inclined against a radial line extending outwardly from the rotating axis. The current supply control means 30 switches the direction of the electric current to the electro-magnetic coils based on the signal from the magnetic sensor and supplies electric current after a lapse of predetermined time from the detection of magnetism by means of the magnetic sensor.
摘要:
An apparatus for controlling an electric motor (1) comprising a plurality of phase windings (2-4) and a rotor is described. The apparatus comprises a plurality of driving stages (5-7) for driving respective phase windings (2-4) of he motor (1) and means (112) adapted to store the samples (CP) of reference signals (refA-refC); said driving stages (5-7) forcing currents (A-C) in accordance to each one of said reference signals (refA-refC) through a respective phase winding (2-4) of the motor (1). The apparatus comprises means (101-107) adapted to determine subdivision degree intervals (H) of an electric giro and means (108-113, Comp) adapted to compare one of the currents (A-C) flowing through the respective phase windings (2-4) of the motor (1) with at least one of the samples of the respective reference signal (refA-refC) in at least one portion of one of said degree intervals (H) and for each one of said degree intervals (H).