System and method for controlling a positioning device, in...

G - Physics – 05 – B

Patent

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G05B 19/23 (2006.01) G01D 5/244 (2006.01)

Patent

CA 2387397

The invention relates to a system in order to control a positioning device, in particular positioning devices for tool machines, whereby said system comprises an incremental position measuring device with an output signal having a sin.phi.1, sin (.phi.1 .plusmn. p) form and a control unit which converts an output signal into a control signal and thereby control said positioning device. Means are provided for adding in a correction angle .phi.2 to the output signal. Said means are placed between the positioning device and the control unit such that the output signal obtained has the form of a sin (.phi.1 .plusmn. .phi.2), sin (.phi.1 .plusmn. .phi.2 .plusmn. p) prior to conversion to a control signal in the control unit.

L'invention concerne un système pour commander une unité de positionnement, notamment des mécanismes de commande dans des machines-outils, ledit système comportant un dispositif de mesure de position incrémentale, dont les signaux de sortie présentent la forme suivante sin.phi.¿1?, sin (.phi.¿1? .plusmn. p), et une unité de commande convertissant les signaux de sortie en signaux de commande et commandant par conséquent une unité de positionnement. Ce système comprend des moyens qui servent à ajouter un angle de correction .phi.¿2? aux signaux de sortie et qui sont placés entre le dispositif de mesure de position et l'unité de commande de façon à permettre l'obtention de signaux de sortie de forme sin (.phi.¿1? .plusmn. .phi.¿2?), sin (.phi.¿1? .plusmn. .phi.¿2? .plusmn. p) avant qu'ils ne soient convertis en signaux de commande par l'unité de commande.

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