摘要:
L'invention concerne un procédé de détection du blocage d'un moteur pas à pas triphasé présentant trois bobines, caractérisé en ce que le moteur pas à pas ayant ses bobines connectées en mode étoile, avec une borne commune (P), il met en oeuvre une détection d'un dit blocage du rotor du moteur (M), en alimentant électriquement deux desdites bobines (A, B) de manière à ce qu'elles soient parcourues par un courant, et en mesurant la tension à une borne d'extrémité de la troisième bobine (C). Une comparaison de la tension mesurée est effectuée avec au moins un seuil donné.
摘要:
An apparatus including a rotary knob (14) coupled to the shaft of the rotor of a stepper motor having first and second stator windings, in quadrature, each winding having a grounded center tap to provide first and second winding portions for each winding. One pair of first winding portions is used for providing pulse inputs to a microprocessor (20) on rotation of the knob, in either direction, via a pulse control system (22), the microprocessor providing command signals to a braking control system (24). On command of the processor, a force or torque is applied to the rotor, by means of energization of the other pair of winding portions, the force being in opposition to the direction of rotation of the knob. Under control of the microprocessor, the force may be intermittently applied to simulate a mechanical detent arrangement, or be a constant force for braking.
摘要:
An apparatus including a rotary knob (14) coupled to the shaft of the rotor of a stepper motor having first and second stator windings, in quadrature, each winding having a grounded center tap to provide first and second winding portions for each winding. One pair of first winding portions is used for providing pulse inputs to a microprocessor (20) on rotation of the knob, in either direction, via a pulse control system (22), the microprocessor providing command signals to a braking control system (24). On command of the processor, a force or torque is applied to the rotor, by means of energization of the other pair of winding portions, the force being in opposition to the direction of rotation of the knob. Under control of the microprocessor, the force may be intermittently applied to simulate a mechanical detent arrangement, or be a constant force for braking.