Siemens Aktiengesellschaft

Albrecht Donat

Ralf Schweigert

Hubert Schierling

Jörg Zapf

Günter Schwesig

Gerhard Heinemann

Stefan Stegmeier

Andreas Kuhn

Eric Baudelot

Axel Ganster

Kurt Göpfrich

Erik Weisbrod

Franziska Lambrecht

Markus Lasch

Rolf-Jürgen Steinigeweg

Hubert Baueregger

Bernhard Foecking

Rolf Florschütz

Various embodiments of the teachings herein include an electronic module comprising: a circuit carrier with an electrically conductive thick film with a thickness of at least 0.5 millimeter; and a plurality of thermally conductive elements connected to one another by a thermally conductive material. The thermally conductive elements have a base area with rotational symmetry.

Electronic module, method for producing an electronic module, and industrial plant

A drive unit for a machine, in particular a machine-tool, robot and the like, is described. The drive unit has several components, and each component has at least one associated component-specific function, and a uniform communication module that forms an interface with the other components. The interfaces of the various components can be connected by logical point-to-point connections or via a bus. Each component is designated with a particular type, and the communication between the components uses a type-specific communication protocol. A least one of the components is a hierarchically superior component.

Drive unit and method for using the drive unit to control a machine tool

A drive system, includes a motor having a neutral terminal, a converter, which has a voltage intermediate circuit and is electrically connected to the motor, a switching device, and a holding brake, which is mechanically connected to the motor. The holding brake has a first terminal, which is connected to the neutral terminal of the motor, and a second terminal, which is connected with a negative busbar of the voltage intermediate circuit via the switching device.

Drive system

An inverter includes a mains system side freewheeling pulse converter and a load-side freewheeling pulse converter, which are electrically connected on the DC side via a DC intermediate circuit. The mains system side and load-side freewheeling pulse converters each include switchable current valves in form of semiconductor switches that are made of silicon carbide with a high blocking voltage. The inverter can operate at higher voltages and frequencies, without affecting the load rating.

Inverter with a line-side and load-side freewheeling pulse converter using SiC switching elements

For the safe evaluation of sensor signals, singular further processing is permitted by producing a redundancy signal in accordance with a prescribed algorithm when the sensor signals are actually generated. The redundant single-channel nature is made possible by virtue of safety-conforming data processing and data transmission being carried out on a single channel by virtue of a downstream processing device deriving dual-channel signals therefrom, by reversing the algorithm, and testing them for plausibility by reciprocal result comparison.

Method and apparatus for safe single-channel evaluation of sensor signals

Method and apparatus for detecting low rotational speeds using a resolver

To detect amplitude deviations and/or offset deviations in two sinusoidal signals (S1, S2), electrically staggered from each other by 90.degree., both signals (S1, S2) are evaluated by way of threshold stages (K11, K12, K21, K22). The zero passages of the one signal (S1, S2) each indicate trigger time points (1.sub.up, 1.sub.down, 2.sub.up, 2.sub.down) for the amplitude of the other signal (S2, S1) in each instance. The output signals (X1, X2, A, A, B, B) of the threshold stages (K11, K12, K21, K22) are analyzed in the a regulating mechanism. Regulation can take place in accordance with the errors detected.

Circuit and method for detecting an amplitude and offset deviation of

A linear, path or angle dependent signal sequence (E) is formed from two path or angle dependent signals (A, B) of equal amplitude and period having an electrical phase offset to each other of 90.degree. and being generated by an incremental transmitter (GS), in that the transmitter signals (A,B) are rectified and an output signal is formed in a converter (U1), which [output signal] corresponds to the quotient of the respectively smaller absolute value (.vertline.A.vertline. or .vertline.B.vertline.) of the signals (A or B) to the sum (.vertline.A.vertline.+.vertline.B.vertline.) of the absolute values (.vertline.A.vertline., .vertline.B.vertline.) of both signals (A, B). The respective, precise position is detected from this signal sequence by means of a digital convervison.

Growing community of inventors

Dachsbach, Germany

Albrecht Donat