Control system for a mine winder

Details Control system for a mine winder Control system for a mine winder

B - Operations, Transporting

66

D

B66D 1/48 (2006.01) B66B 1/30 (2006.01) B66B 1/44 (2006.01) B66B 7/06 (2006.01)

Patent

CA 2051523

The invention provides a control system for an electric motor arranged to drive a rope drum of a mine winder or a hoist system which includes a conveyance supported by a rope and which forms an oscillating system. The control system comprises a load sensor which monitors the load in the rope and a rope length sensor which monitors the length of rope paid out from the rope drum. The motor control unit is responsive to signals from the sensor and calculates setpoints for speed, acceleration and jerk of the oscillating system. The control unit generates a control signal which is related to a natural oscillation mode of the oscillating system so as to prevent the excitation of oscillations in the system, and controls a motor drive in accordance with the control signal.

L'invention a trait à un système de commande d'un moteur électrique actionnant le tambour de câble d'un treuil d'extraction ou d'un système de levage. Le système comprend un transporteur supporté par un câble et constitue un système oscillant. Le système de commande comprend un détecteur de charge surveillant la charge supportée par le câble, et un détecteur de longueur de câble surveillant la longueur de câble fournie par le tambour de câble. Le dispositif de commande du moteur réagit aux signaux provenant des détecteurs et calcule des points déterminés relativement à la vitesse, à l'accélération et aux à-coups du système oscillant. Le dispositif de commande génère un signal de commande ayant rapport à un mode d'oscillation libre du système oscillant, pour empêcher la stimulation des oscillations du système, et commande le moteur en réponse au signal de commande.

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