Regulation and guidance system for a plasma gun_

H - Electricity – 05 – H

Patent

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H05H 1/36 (2006.01)

Patent

CA 2237706

L'invention porte sur un système de commande d'un pistolet à plasma (1) aux caractéristiques suivantes : moyen (34) de stocker une courbe de la tension d'arc du pistolet, appelée courbe de tension optimale, en fonction de l'énergie électrique réelle fournie au pistolet, -moyen de contrôler une régulation de l'alimentation du pistolet et de son fonctionnement : conformément aux premières conditions de fonctionnement de la rampe, de sorte que l'énergie d'alimentation réelle atteigne une valeur connue comme valeur d'alimentation de référence, avec une tension d'arc qui s'accroît, à l'intérieur d'une certaine marge d'erreur, en même temps que la tension optimale, conformément aux secondes conditions de fonctionnement, appelées conditions permanentes de fonctionnement, dans le but de stabiliser la tension d'alimentation réelle autour de la valeur de référence, la tension d'arc étant égale, à l'intérieur d'une marge d'erreur donnée, à la tension optimale.

The invention relates to a system for the control of a plasma torch (1) having: - means (34) for storing a curve of the arc voltage of the torch, called the optimum voltage curve, as a function of the real electric power supplied to the torch, - means for controlling a regulation of the power of the torch and functioning: in accordance with first operating conditions, called ramp operating conditions, so that the real power reaches a value known as the reference power value, with an arc voltage which evolves, to within a margln of error, with the optimum voltage, according to second operating conditions, called permanent operating conditions, in order to stabilize the real power around the reference value, with an arc voltage equal, to within a margin of error, to the optimum voltage.

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