Process for regulating or controlling an injection moulding...

B - Operations – Transporting – 29 – C

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B29C 45/77 (2006.01) B29C 45/76 (2006.01)

Patent

CA 2225065

In a regulation- or control process speed steps are predetermined for the displacement of a movement unit and a reference-speed-curve determined out of it. Means for calculation detect out of it a reference-curve of the path (s) over time for determination of a position reference variable for the speed regulation or -control. At the time (t l) determined for the modification position (s i) for switching between contiguous speed steps, the speed of the drive motor (44) is maintained until the comparison means determines, that the movement unit has reached the modification position. When the modification position (s i) has been reached, the reference position value curve is triggered (Fig. 9) at the switching time.

L'invention concerne un procédé de régulation ou de commande dans lequel sont définies des vitesses relatives au mouvement d'une unité cinématique, à partir desquelles est déterminée une courbe théorique de vitesse. Sur cette base, des organes de calcul déterminent une courbe théorique course(s)/temps pour établir une grandeur de guidage de position en vue de la régulation ou de la commande de vitesse. Au moment (ti) fixé pour la position de changement (si) en vue de la commutation entre des vitesses voisines, la vitesse du moteur d'entraînement (44) est maintenue jusqu'à ce que des organes de comparaison constatent que l'unité cinématique a atteint la position de changement. Lorsque cette position de changement (si) est atteinte, la courbe des valeurs théoriques de position est asservie au moment fixé pour la commutation.

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