Abstract:
Machine-outil pourvue d'un mecanisme mobile (TBL) entraine par un serve-moteur (MT). Un premier et un deuxieme systemes de commande de position sont prevus, dans le premier systeme un premier detecteur de position (RSV) et un deuxieme detecteur de position (IND) sont connectes en reaction, respectivement La polarite de la difference entre le signal du deuxieme detecteur (FP2) et un signal de commande (CP) est discriminee, et en reponse aux variations dans la polarite, un circuit de rattrapage de jeu (BCP) fournit une valeur de correction correspondant a la quantite de jeu du mecanisme mobile (TBL), au terminal d'entree du premier systeme de commande de position en tant qu'etape suivante pour rattraper le jeu.
Abstract:
A digital motor control positioning system, and method, in which lead screw position (12) is measured by an encoder (26), and the error between that position and the destination is measured (28), either continuously or repetitively, to provide digital, distance-representing control pulses to the motor (14, 16). In the final, settling-in portion of motor movement, it is successively started and stopped to provide incremental distance movements, which preferably are reduced in size as the destination is approached.
Abstract:
To monitor an adjusting movement of an adjuster (4) operated by an electric adjusting drive (2), the time (t) elapsed from the start of the adjusting movement and a characteristic value (I) for the torque of the adjusting drive (2) are detected and compared with stored reference values (tS or IG). Depending on the result of comparison, monitoring signals (S1, S2, S3, S4) are derived therefrom which are imitated in the monitoring signals provided by mechanical transmitters in travel and torque detection.