Siemens Aktiengesellschaft

Christoph Nolting

Dirk Scheibner

Jürgen Zettner

Günter Schwesig

Roland Finkler

Jürgen Schimmer

Hans-Georg Köpken

Andreas Kuhn

Jürgen Böhling

Paul Dünisch

Markus Schwaben

Juergen Mueller

In a method for controlling a dynamoelectric machine, in particular a dynamoelectric rotary machine, an ambient air pressure of the dynamoelectric machine is ascertained by determining an altitude and/or by measuring the ambient air pressure, and a power output of the dynamoelectric machine is adapted as a function of the ambient air pressure to counteract an air pressure which drops as installation altitude rises and an associated deterioration of cooling properties, and to ensure a sufficient cooling of the machine.

Method and system for controlling a dynamoelectric machine

A device for monitoring a shaft coupling coupling a first shaft to a second shaft includes an optical unit comprising a receiving element which is designed to receive an electromagnetic radiation in a form of light, and an error notification element designed for arrangement on and/or within the first shaft and on and/or within the second shaft. The error notification element is designed to notify when the first shaft runs asynchronously with respect to the second shaft.

Device for monitoring a shaft coupling coupling a first shaft to a second shaft

A device for monitoring a shaft coupling coupling a first shaft to a second shaft includes an optical unit having a receiving element to receive electromagnetic radiation. A modifying unit modifies a radiant energy impinging on the receiving element as the first shaft runs asynchronously with respect to the second shaft. The modifying unit includes a holographic optical component designed for arrangement on and/or within the first shaft, and a diaphragm designed for arrangement on and/or within the second shaft and including radially arranged slots and radially arranged filled regions in an at least substantially regular sequence. The diaphragm includes an at least substantially centrally arranged opening. The holographic optical component is designed for illumination or irradiation with the electromagnetic radiation and generates a pattern having radially arranged areas with a first radiant energy and radially arranged areas with a second radiant energy in an at least substantially regular sequence.

A low-wear sensor with little structural outlay to detect a combined linear and rotational movement, such as in a print roller (). In one embodiment, a PLCD (Permanent Magnetic Linear contactless Displacement) sensor includes a magnet () which can be rotated about a longitudinally extended coil (). A ring magnet is particularly suitable for this. The linear position of the ring magnet can be determined independently of its rotational movement () by means of the voltage induced in coils (). Detection of the linear position is contactless and thus wear-free.

Position sensor and corresponding method for detecting the position of a rotating element

A rotary motion detector includes an electrically conducting induction element formed essentially as a hollow cylinder and rotatable about a rotation axis. An excitation assembly applies an inhomogeneous magnetic field and induces an eddy current in the induction element, when the induction element rotates about the rotation axis. A sensor assembly detects a measurement signal that depends on the eddy current. The excitation assembly and the sensor assembly are both arranged radially inside the induction element.

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Höchstadt/Aisch, Germany

Christoph Nolting