Siemens Aktiengesellschaft

Siemens Aktiengesselschaft

Siemen Ag

Elmar Schaefers

Dietmar Stoiber

Jens Hamann

Uwe Ladra

Raimund Kram

Peter Wagner

Bernd Quaschner

Wilhelm Westermeyer

Markus Stephan Haschka

Hartmut Linke

Theo Reichel

Hans-Peter Troendle

Torsten Schuer

Georg Wiegaertner

A device for damping vibrations of a machine, in particular for damping vibrations of a machine tool, wherein the device includes a first linear motor primary part, a pendulum mass, mounted via at least one supporting sheet-metal assembly provide a relative motion of the pendulum mass along the first linear motor primary part, a first linear motor secondary part fastened to the pendulum mass such that the pendulum mass is actuated via the first linear motor primary part to dampen vibrations of the machine, a second linear motor primary part, and a second linear motor secondary part fastened to the pendulum mass such that the pendulum mass is additionally actuated via the second linear motor primary part to dampen vibrations of the machine so as to achieve an especially compact device that makes it possible to dampen vibrations of machines, in particular machine tools, effectively and without maintenance.

Damping of vibrations of a machine

A method for operating a technical system, an apparatus and method for determining a movement profile, control apparatus and the actual technical system that includes at least one drive to move at least one axis, wherein at least one optimized movement profile of the axis is calculated with the aid of an optimization method that calculates an optimized movement profile with reference to preset points of a movement profile and/or preset regions of the movement profile, where for simplified and particularly understandable use, the optimization method includes physical boundary conditions from the start of the optimization method, where the use and initialization of the technical system by the user is made more understandable, for example, and where the optimized movement profile is used to control the at least one drive of the technical system.

Method for operating a technical system, control apparatus, computer program product and the technical system

The PDTfiltering element (PDT) and a Cauer filter (C) are employed for use in control tasks of automation engineering, in particular for a filter connected downstream of a rotational speed controller. For tasks in control engineering, these have the advantage of a higher level of robustness, since a large frequency range is filtered, and a substantially smaller phase drop than conventional lowpass filters (PDT). Consequently, by comparison with the known prior art a loss in dynamics is substantially minimized with these phase-saving lowpass filters, and an optimum is achieved in robustness and dynamics.

Phase-saving lowpass filters for drive control in conjunction with a high level of control dynamics

In an injection-molding machine, the rapid traversing over long distances takes place with the aid of linear drives (L , L ), the &ldquo;rotor&rdquo; (H , H ) which is a component part of the machine construction.

Surface-pressure generating device in an injection-molding machine

A critical resonant frequency (f ) of the axes of a moving machine element is damped as effectively as possible with the aid of a jerk limitation. Good damping in the case of a desired frequency is achieved when the longest possible time (TrLim) which can be traveled with a maximum permissible jerk (rLim) is selected such that 1/TrLim coincides with the lowest natural frequency (f ) of the participating axes. This finding is implemented by adapting the path dynamics such that the TrLim&equals;aMax/rLim yielded by the prescribed dynamics limiting values is varied by reducing the maximum jerk (rLim) to achieve good damping results for the lowest natural frequency (f ) of the participating axes.

Jerk-limitation with adaptation of the path dynamics

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Nuremberg, Germany

Elmar Schaefers