Siemens Aktiengesellschaft

Siemens Energy Global Gmbh & Co. Kg

Siemens Healthcare Gmbh

Clemens Jungkunz

Siegbert Steidl

Markus Vester

Rainer Alfred Kuth

Klaus Huber

Sebastian Martius

Rodrigo Alonso Alvarez Valenzuela

Dietrich Wohld

Achim Degenhardt

Sebastian Semmler

Martin Niemann

Kilian Dallmer-Zerbe

Andre Berghs

Martin Nisznansky

Hans-Peter Troendle

Georg Weihrich

Andreas Lorenz

Herbert Muller

Gunter Wagner

Ulrich Zahner

Klaus Berger

Peter Drucke

Anton Stribersky

Bernhard Rath

Werner Niemeyer-Stein

A power converter contains at least one phase module which has a plurality of modules which are electrically connected in series. Each module has a first electrical module connection, a second electrical module connection, a first electronic switching element, a second electronic switching element and an electrical energy storage device. The phase module is assigned at least one controllable voltage source which is suitable for generating a compensation voltage in response to a corresponding actuation, the compensation voltage has a time profile such that it reduces an error voltage generated by the switching of the first electronic switching elements and the second electronic switching elements of the module.

Power converter reducing an error voltage generated by switching electronic switching elements

A method for controlling a signal with a plurality of independent components is provided. The signal is fed as an input signal via an input path to a control path that supplies an output signal. The output signal is fed via an output path to a control apparatus controlling the input signal. A coupling signal is determined in a coupling determination apparatus. On the basis of the coupling signal, the independent components are decoupled in a decoupling apparatus, as a result of which, a decoupled output signal is generated. Components of the decoupled output signal are decoupled from the components of the input signal. The decoupled output signal is fed as a control variable to the control apparatus. The control apparatus controls each independent component separately on the basis of a desired signal with a diagonal controller and outputs the input signal as a manipulated variable.

Method and device for controlling a signal with a plurality of independent components

In a method and system for navigating an endoscopy capsule in a patient, wherein the endoscopy capsule includes a camera, a first image of an object in the interior of the patient is obtained with the camera, in which a re-identifiable structural feature of the object is identified. Successive images of the interior of the patient are then automatically obtained with the camera, and the endoscopy capsule is controlled, for each image, so that the position of the structural feature remains unchanged in the individual images while the image scale is intentionally enlarged or reduced.

Method and device for navigating an endoscopic capsule

Process and device for regulating the earth-related inclination of

To suppress the influence of roll eccentricities on a feedback control of a rolling-stock thickness in the thickness control, it is generally known to provide an insensitive dead zone for signal fluctuations caused by the roll eccentricities, and for the zone width of this insensitive dead zone to be varied relative to the magnitude of the signal fluctuations. To prevent actual thickness fluctuation in the rolling stock from leading to a widening of the dead zone, it is provided for the signal fluctuations drawn upon to vary the zone width (x) to be filtered by one or more band-pass filters (26, 27), whose mid-frequencies correspond to the fundamental frequency (.omega.) and, in some instances, to the first or further harmonic component frequencies (2.omega.) of the roll eccentricities (.DELTA.R).

Method for suppressing the influence of roll eccentricities on a control

In a previous process, the influence of roll eccentricities on the output thickness of the rolled material in a roll stand is suppressed by simulating the output signal of an oscillator and supplying this value to a position or thickness control for the roll stand, where the frequency of the output signal is set according to the roll rotation speed. In the process according to the invention, the amplitude and phase of the output signal are set so that the exit thickness of the rolled material is measured with a measuring delay in relation to the thickness reduction in the roll gap. A difference signal is generated from the delayed roll screw-down signal and a measured thickness signal multiplied by the sum of one and the quotient of the rigidity of the rolled material and the roll stand. The output signal of the oscillator is corrected according to the difference between the output signal and the difference signal. The output signal is phase shifted by the amount of measurement delay for a forward slip.

Process for suppressing the influence of roll eccentricities

A signal which is dependent solely on the disturbance variable is selected by means of a filter and fed to a disturbance detector. This disturbance detector simulates the steady and alternating component (sine component) of the selected signal, as well as a signal (cosine component) phase-leading by 90.degree. with the latter signal. The correction signal required to exactly compensate for the disturbance variable is determined from the sine and cosine component of the periodic disturbance signal component by means of frequency-controlled function generators and a complex phasor calculation.

Method and device for eliminating the effect of periodic disturbance

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Erlangen, Germany

Clemens Jungkunz