Mannesmann Aktiengesellschaft

Wolfgang Bauspiess

Wolf-Dieter Goedecke

Jorg Niederstadt

Bernhard Moosmann

Jurgen Fischer

Reinhard Klein

Volker Langguth

Horst Rothele

The present invention relates to a drive of the fluid or electric type having a device for controlling an element for transmitting a driving force to a reciprocating or otherwise moveable or displaceable element and an arrangement for damping the driving force at at least one end of the element's travel. The driving force element is at least single-acting, and the drive may also include mechanical shock absorbers and sensors arranged in the area of the ends of travel. In order to achieve an especially soft striking or contact at the end of travel position of the driving force element, the control device includes a counter-pulse module which, via a pre-positioning sensor associated with at least one movement direction, causes a chronologically settable changeover from a previously flowed-through or activated first switching element associated with a first end of travel position to a previously unactivated second switching element associated with a second end of travel position.

Drive of the fluid or electric type with a control

Disclosed is a process for operating a pressure-operated positioning tool or gripping and clamping tool and a tool itself, in which the position of at least one adjusting member is determined and the valve-actuated supply of pressure medium to the adjusting member is regulated depending on position. To take into account the elasticity of the contact elements in the target position and to exert influence after the target position has been reached in a process and in a tool of the generic type, the regulating of the valve-actuated supply of pressure medium is not only effected in a position-dependent manner, but also takes into account the pressure of the pressure medium.

Pressure-operated positioning tool or gripping and clamping tool and

In a method for the adaptive automatic control of position-adjustable drives, optimized parameters are determined from the drive motion, wherein the optimized parameters are stored with corrected parameters entered into data memory storage. In order to avoid in a method of this kind, involving a reduction of the cycle times, an overshooting in the target position, even in case of non-cyclical positioning sequences, a drive distance, determinant for an operational course, is determined between its stop points and is subdivided into calculated, consecutively numbered distance zones or angle zones and these numbers of system zones or numbers of angle zones are stored in a data memory storage. With the aid of the thus determined distance zones or angle zones, the values describing the drive motions are determined and are sub-divided in each case into a consecutively numbered zone system and are stored in a data memory storage. A data address is calculated from the number of a zone of a first zone system and from the number of a zone of at least a second zone system. An automatic control parameter field for the drive motion, stored in a data memory storage, is addressed with the calculated data address. The addressed parameters are entered for the adjustment value determination into the automatic control system.

Method of adaptive control of position-adjustable drives in which drive

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Villingen, Germany

Wolfgang Bauspiess