Dr. Johannes Heidenhain Gmbh

Johannes Heidenhain Gmbh

Helmut Huber

Steffen Bielski

Hermann Hofbauer

Erich Strasser

Sebastian Tondorf

Rainer Hagl

Robert Wastlhuber

Siegbert Holstein

Oliver Schenk

Andreas Hager

Horst Gschossmann

Christian Zehentner

Michael Martin

A system for determining a signal running time between a position measuring system and an evaluation unit. The system includes a position measuring system that has a graduation connected to a moving element, a scanning unit that scans the graduation, wherein scanning of the graduation generates signals representative of a position of the moving element and a transceiver means for generating serial data that is transmitted along a data line connected to the transceiver. The system further includes an evaluation unit connected to the data line, the evaluation unit having means for determining a signal running time between the position measuring system and the evaluation unit.

Method for operating a position measuring device

A linear encoder for use with a guide assembly includes a scale ( ), a head ( ) for scanning the scale ( ), and mounting elements ( ) for releasably attaching the scale ( ) to the guide rail ( ) of the guide assembly, with the mounting elements ( ) being arrangeable outside of the mounting surface ( ) of the guide rail ( ) and having stop surfaces ( ) extending perpendicular to the longitudinal direction (X) of the guide rail ( ) for a parallel alignment of the scale ( ) along the guide rail ( ) and encompassing and engaging reference surface ( ) of the guide rail ( ).

Linear encoder and linear guide assembly with the linear encoder

A method and a device for switching between different types of output signals, wherein it is possible to generate at least two different types of output signals by the position measuring system which are transmitted to an evaluating unit. Switching between the different types of output signals takes place by one or several switching signals transmitted by the evaluating unit, which are transmitted over a supply line of the position measuring system.

Method and device for switching between different types of output signals of a position measuring system

Process and measuring system for locating a movable object by monitoring

A device and method for data transmission between a transducer and a processing unit which are coupled by one or several signal transmission lines, to selectively activate at least two different modes of operation of the transducer. The device includes a comparator unit which identifies the respectively activated mode of operation by comparing signals present on at least one signal transmission line with predetermined reference signals.

Device and method for switching between different operating modes of a

A position measuring system to determine the absolute angle position of a rotor of a motor during startup. With this absolute angle position, correct commutation for startup of the motor is provided. During later operation a high-precision incremental angle measurement is possible. For this purpose a switching unit is disposed between a rotary transducer and an evaluation unit, which is driven in such a manner that first the analog signals necessary for the determination of the absolute angle position are input to the evaluation unit and thereafter the analog signals required for incremental angle measurement are input to the evaluation unit. In order to avoid unacceptable incorrect positioning in case of incorrect switching between the first and second modes of operation, all the analog signals have an approximately equal spacing period.

Position measuring system and measuring process

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Garching/Alz, Germany

Helmut Huber