Abstract:
A force control system (50, 300) for actuation of a test object (54, 304) includes a force actuator (52, 356) that is coupled to and applies a force on the test object (54, 304). A velocity signal generator (124, 310) is in a feedback configuration relative to the force actuator and generates a velocity signal (150, 324) that is indicative of the velocity of the test object (54, 304). A controller (62, 302) is coupled to the force actuator (52, 356) and to the velocity signal generator (124, 310) and generates a desired applied force signal (130, 380) in response to the velocity signal (150, 324).
Abstract:
A apparatus processes an object (19), such as a semi-conductor wafer at accurately controlled positions. The object (19) is supported by a working platform (12) that is moveable along a path. A suspension actuator part (14) attached to the working platform (12), contains a soft magnetic core (24) with poles facing the surface of a soft magnetic element (34) on the support structure along the path and a winding (20) for application of a current to generate a magnetic field that runs through the core (24) via the poles and returns via the soft magnetic element (34). A sensor (17) senses a measured position of the suspension actuator part (14) relative to the position reference element (16). A control circuit comprises an outer control circuit (40) and an inner control circuit (42). The outer control circuit (40) receives a sensing result and determines force set point information to regulate the measured position of the actuator part (14) to a required value. The inner control circuit (42) receives the force set point information and controls the current to realize a force between the actuator part (14) and the support structure (10) according to the force set point information.
Abstract:
Die Erfindung betrifft eine numerisch gesteuerte Werkzeugmaschine (10) mit mindestens fünf angetriebenen Maschinenachsen zur Positionierung und Orientierung eines Werkzeugs (18) der Werkzeugmaschine (10) relativ zu einem durch das Werkzeug (18) zu bearbeitenden Werkstück (16) und einem von einer Steuerung zur Einstellung der Maschinenachsenpositionen und einer gegebenenfalls vorhandenen Steuerung oder Regelung eines Hauptantriebs separaten geschlossenen Regelkreis, welcher einen unabhängig von den Maschinenachsen und dem gegebenenfalls vorhandenen Hauptantrieb betätigbaren Aktuator (24) zum Bewegen des Werkzeugs (18) relativ zu dem Werkstück (16) und einen Sensor (38) zum Erfassen des Istwerts einer bearbeitungsrelevanten Regelgröße umfasst und dazu dient, die Regelgröße durch Betätigung des Aktuators (24) auf einen vorgegebenen Sollwert zu regeln. Die Erfindung betrifft auch ein Verfahren zur Bearbeitung eines Werkstücks (16) mittels eines Werkzeugs (18) einer numerisch gesteuerten Werkzeugmaschine (10).
Abstract:
A system for maintaining a desired sealing force is provided, which incorporates a closed loop control system. The system includes a platen (18), which has a surface for making contact with one or more items to be sealed, a motor (14) for producing a linear movement, a linkage (20) coupled to the platen (18) and the motor (14) for transferring the linear movement produced by the motor (14) to the platen (18), and a transducer (22) coupled between the linkage (20) and the platen (18) for measuring the force applied to the platen (18) via the linkage (20) through the linear movement of the motor (14) and producing a signal representative of the force measured. A motor controller (12) produces a motor control signal, which is supplied to the motor (14) for controlling the same. The motor control signal is used to control the linear movement produced by the motor (14). The motor controller (12) further receives the feedback signal from the transducer (22), and correspondingly adjusts the value of the control signal used to control the magnitude of the linear movement.
Abstract:
L'invention concerne un procédé et un dispositif de réglage d'un système mécanique actionné (ROB), dans lequel on met en œuvre une commande en boucle fermée du système mécanique actionné par rapport à une grandeur physique délivrée par au moins un capteur (CAP). Suivant l'invention, au cours d'une première étape d'identification, on sélectionne selon un premier réglage du contrôleur (CONT2) une première fonction de transfert PID, au cours d'une deuxième étape, on détermine une deuxième fonction (G) de transfert, donnant la valeur mesurée (Fm) en fonction de la grandeur (ΔXd) de déplacement ayant été calculée au cours de la première étape, au cours d'une troisième étape, on sélectionne selon un deuxième réglage du contrôleur (CONT2) une loi de commande du deuxième contrôleur (CONT2), déterminée à partir au moins de la deuxième fonction (G) de transfert pour donner la grandeur (ΔXd) de déplacement présente sur la deuxième sortie (S2).
Abstract:
A force control system (50, 300) for actuation of a test object (54, 304) includes a force actuator (52, 356) that is coupled to and applies a force on the test object (54, 304). A velocity signal generator (124, 310) is in a feedback configuration relative to the force actuator and generates a velocity signal (150, 324) that is indicative of the velocity of the test object (54, 304). A controller (62, 302) is coupled to the force actuator (52, 356) and to the velocity signal generator (124, 310) and generates a desired applied force signal (130, 380) in response to the velocity signal (150, 324).
Abstract:
A apparatus processes an object (19), such as a semi-conductor wafer at accurately controlled positions. The object (19) is supported by a working platform (12) that is moveable along a path. A suspension actuator part (14) attached to the working platform (12), contains a soft magnetic core (24) with poles facing the surface of a soft magnetic element (34) on the support structure along the path and a winding (20) for application of a current to generate a magnetic field that runs through the core (24) via the poles and returns via the soft magnetic element (34). A sensor (17) senses a measured position of the suspension actuator part (14) relative to the position reference element (16). A control circuit comprises an outer control circuit (40) and an inner control circuit (42). The outer control circuit (40) receives a sensing result and determines force set point information to regulate the measured position of the actuator part (14) to a required value. The inner control circuit (42) receives the force set point information and controls the current to realize a force between the actuator part (14) and the support structure (10) according to the force set point information.
Abstract:
A system for controlling motion of machine tools and industrial robots. From the specification of a part to be cut or a path to be followed by a machine tool or robot, the system calculates for each axis, for each incremental step along the path, a position command (69), a time delay between successive position commands, and, optionally, a force command (68) based on a prediction of predicted resistive forces. Calculations are specified for precisely controlling velocity, acceleration, and jerk. The generated data is stored in a memory device and subsequently directed to the machine tool or robot.