摘要:
Procédé pour détecter et calculer un écart de positionnement (1) d'un outil (2) entre,
. une position souhaitée prédéterminée de cet outil (2) sur au moins un axe orienté prédéterminé (W) situé dans un espace référentiel prédéterminé (3) dans lequel l'outil (2) décrit une trajectoire prédéterminée (4), cette position souhaitée étant dite première position (5), et . une position effective dudit outil (2) sur l'axe orienté prédéterminé (W), cette position effective étant dite deuxième position (6), l'outil (2) étant associé à un dispositif d'actionnement (7), pour être déplacé de manière cyclique sur la trajectoire déterminée (4), depuis une position de départ, dite troisième position (8) prédéterminée sur l'axe orienté prédéterminé (W), et ce, à une vitesse dont la valeur est une fonction prédéterminée du temps F(t), ce procédé étant caractérisé en ce que pour détecter et calculer un écart de positionnement (1) d'un outil (2)
on calcule la valeur de l'écart de temps moyen (EM) qui existe entre la durée théorique (D1) du trajet de l'outil (2) et la durée effective (D2) du trajet de l'outil (2) et, on exploite cette valeur de l'écart de temps moyen (EM) pour déterminer la valeur d'un écart de position moyen (EP) de l'outil (2) par rapport à la première position (5), on exploite la valeur de l'écart de position moyen (EP) pour influencer le fonctionnement du dispositif d'actionnement (7) de l'outil (2) et corriger des paramètres définissant au moins, la première position (5) de l'outil au moins sur l'axe orienté prédéterminé (W) dans l'espace référentiel (3).
摘要:
An anomaly detecting method in a servo system that is capable of quickly detecting the occurrence of an anomaly even in a low revolution range is disclosed. A simulator (14) finds a position feedback (PAS) by integrating a speed instruction (Vcs) which is equal to the product of a position loop gain (PG) and an estimated position deflection (Ers) that is obtained by subtracting the position feedback (PAS) from a movement instruction (Mc) while the servo control for the servo motor is executed by the digital servo control units (11 to 13) according to a torque instruction (Tc) calculated based on the speed feedback (VA) and a speed instruction (Vc) that corresponds to a practical position deviation (Er). An extraordinary error detecting unit (15) compares a predetermined value (As) with the error (Er - Ers) between the practical position deviation and an estimated position deviation. In case any anomaly has occurred, the practical position deviation increases but there is no substantial change in the estimated position deviation generated by the simulator that approximately carries out normal servo control, whereby a difference between them reaches a predetermined value that indicates the occurrence of an anomaly and alarm is set off.
摘要:
An anomaly detecting method in a servo system that is capable of quickly detecting the occurrence of an anomaly even in a low revolution range is disclosed. A simulator (14) finds a position feedback (PAS) by integrating a speed instruction (Vcs) which is equal to the product of a position loop gain (PG) and an estimated position deflection (Ers) that is obtained by subtracting the position feedback (PAS) from a movement instruction (Mc) while the servo control for the servo motor is executed by the digital servo control units (11 to 13) according to a torque instruction (Tc) calculated based on the speed feedback (VA) and a speed instruction (Vc) that corresponds to a practical position deviation (Er). An extraordinary error detecting unit (15) compares a predetermined value (As) with the error (Er - Ers) between the practical position deviation and an estimated position deviation. In case any anomaly has occurred, the practical position deviation increases but there is no substantial change in the estimated position deviation generated by the simulator that approximately carries out normal servo control, whereby a difference between them reaches a predetermined value that indicates the occurrence of an anomaly and alarm is set off.
摘要:
Providing self compensation as when external forces influence on the controlled object, as when turning wheel chair seats (S), and comprising at least two sets of control providing position signals each composed of at least two positioning controlling signals: a. having one of these sets, at 2-dimensional position control, comprising at least two with the object associated position locating signal components (a1, a2), and b. another of these signal sets comprising at least two signal components (b1, b2) for the movable object hereto corresponding, the aimed object position, if reached with the aimed moving velocity, locating and of the aimed velocity size dependent signal components (b1, b2), whereby to attain self compensation: c. a coupling device with at least two sets of coupling providing members (c1 and OUT=IN, c2 and OUT=IN) is provided substantially to substitute: d. respectively one of the at least two individual signal sets that is associated with the at least two with the object position assiociated position locating signal components (e1, e2) with e. the corresponding respective of the at least two to the object hereto corresponding, the aimed object position, if reached with the aimed moving velocity, locating and thus of the aimed velocity size dependent signal components (d1, d2 based upon and in illustrated embodiment identical with a1, a2).
摘要:
Providing self compensation as when external forces influence on the controlled object, as when turning wheel chair seats (S), and comprising at least two sets of control providing position signals each composed of at least two positioning controlling signals:
a. having one of these sets, at 2-dimensional position control, comprising at least two with the object associated position locating signal components (a1, a2), and b. another of these signal sets comprising at least two signal components (b1, b2) for the movable object hereto corresponding, the aimed object position, if reached with the aimed moving velocity, locating and of the aimed velocity size dependent signal components (b1, b2), whereby to attain self compensation: c. a coupling device with at least two sets of coupling providing members (c1 and OUT=IN, c2 and OUT=IN) is provided substantially to substitute: d. respectively one of the at least two individual signal sets that is associated with the at least two with the object position assiociated position locating signal components (e1, e2) with e. the corresponding respective of the at least two to the object hereto corresponding, the aimed object position, if reached with the aimed moving velocity, locating and thus of the aimed velocity size dependent signal components (d1, d2 based upon and in illustrated embodiment identical with a1, a2).