Method for determining dead zone of valve

Details Method for determining dead zone of valve Method for determining dead zone of valve

E - Fixed Constructions

21

B

E21B 7/02 (2006.01) E21B 44/00 (2006.01) F15B 13/044 (2006.01) F15B 19/00 (2006.01)

Patent

CA 2723610

The invention relates to a method for determining the dead zone of a proportional control valve (8) used for controlling an actuator of a rock drilling device, the method comprising controlling the control valve (8) with an electric P controller (12) and measuring the position of the actuator in a coordinate system representing its movement with a separate position detector. The dead zone is determined by means of a product of the P controller of the control valve (8) and the difference value.

La présente invention concerne un procédé de détermination de la zone morte dune soupape de commande proportionnelle (8) utilisée pour commander un actionneur dun dispositif de forage de roche, le procédé consistant à commander la soupape de commande (8) à laide dun dispositif de commande P électrique (12) et à mesurer la position de lactionneur dans un système de coordonnées qui représente son mouvement avec un détecteur de position séparé. La zone morte est déterminée au moyen dun produit du dispositif de commande P de la soupape de commande (8) et de la valeur de différence.

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