Siemens Aktiengesellschaft

Georg Schlatterer

Markus Knorr

Roland Finkler

Carsten Spindler

Guido Stöppler

Joachim Scharnagl

Herbert Pommer

Christian Müssenberger

Stephan Fretzschner

Dominik Schury

A motor apparatus includes a motor having a first active part and a second active part, the first active part having a plurality of separately controllable windings, a control unit comprising a processing unit and for each of one or more of the windings a motor module, wherein the motor module has a power converter. The motor apparatus further has and a sensor device constructed to supply a position signal indicative of a position of the first active part relative to the second active part, wherein one of the motor modules is a master module, which receives the position signal directly from the sensor device as the only one of the motor modules, and transmits an item of position information corresponding to the position signal to the processing unit, and wherein another one of the motor modules is a slave module, which receives directly from the processing unit a single item of information regarding the position of the first active part relative to the second active part and controls the one or more windings as a function of the single item of information.

Motor apparatus having separate winding systems and master module

A measurement system for finding the position of a primary part of a linear motor with respect to a secondary part includes an absolute value measurement system for recording a first reference position of the primary part with respect to the secondary part, and an incremental measurement system for recording a fine position of the secondary part relative to the first reference position recorded by the absolute measurement system. The absolute value measurement system includes at least one RFID reader and at least one first RFID tag which is identifiable by the RFID reader, with the first RFID tag intended to identify the first reference position.

Position transmitter system

The aim of the invention is to improve the precision of measuring leakage field sensitive sensors on electric machines. According to the invention, the electric machine comprises a sensor device () which is sensitive to magnetic leakage fields mounted on one of the two active parts () or in a defined relative position in relation to the active parts. A magnetic screening device is arranged between the sensor device () and one of the two active parts (). Also, the magnetic leakage fields no longer have an influence on the sensor device such that measuring precision is increased.

Electric machine comprising a screened leakage-field-sensitive sensor

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Zahling, Germany

Georg Schlatterer