Dr. Johannes Heidenhain Gmbh

Johannes Heidenhain Gmbh

Rudolf Mittmann

Erich Strasser

Sebastian Tondorf

Hermann Hofbauer

Jan Braasch

Ingo Joachimsthaler

Sebastian Tonfdorf

A position-measuring device includes a measuring transducer configured to carry out a position measurement. The position-measuring device has at least one memory having stored parameter data defining an active configuration under which the position-measuring device is operable. The at least one memory further has data and instructions useable to activate at least one further configuration under which the position-measuring device is operable.

Position-measuring device

A position measuring arrangement that includes an arrangement of scanning elements for scanning an absolute code and a selection system for selecting scanning signals from the arrangement of scanning elements by a first method of selection and a second method of selection different from the first method of selection. The position measuring arrangement further includes a decoding device for forming a first absolute measured position value from the scanning signals selected by the selection system when the first method of selection is applied to the selection system and a second absolute measured position value from the scanning signals selected by the selection system when the second method of selection is applied.

Position measuring arrangement

A position measuring device including a code having a first code element and a second code element arranged one behind the other in a measuring direction, wherein each of the first and second code elements includes a first partial area and a second partial area, which are complementary to each other and are arranged sequentially in the measuring direction. A scanning device including a plurality of detector elements that scan the first and second code elements and for forming a first scanning signal within the first partial area of the first code element and a second scanning signal within the second partial area of the first code element. An evaluation unit including a comparison device, which compares the first scanning signal with the second scanning signal and forms binary information for the first code element as a function of the comparison.

Position measuring device

A position measuring device having a scanning element assigned to a periodic measuring graduation, the scanning element moves relative to the measuring graduation so as to scan the measuring graduation and generates a first analog signal and a second analog signal that is phase shifted relative to the first analog signal. A module that forms a measured position value, wherein the first and second analog signals are present at the module, and a code word defines a position that is present at an output of the module. An output module that digitally outputs the code word over a data channel and a conversion device that converts the first analog signal and the second analog signal into multi-digit amplitude-proportional code words, wherein the code words are also available at the output module for outputting on the data channel and is digitally transmitted by the output module over the data channel.

Position measuring device and a method for operating a position measuring device

A procedure for determining an absolute position of an object, which includes scanning a code pattern from a series of code patterns, wherein each code pattern of said series of code patterns unambiguously defines one absolute position and comprises a plurality of code elements. Forming a code word with a plurality of bits by the scanning the code pattern. Checking the plurality of bits of the code word for reliability, and if one of said plurality of bits fails to attain predetermined criteria, it is assigned an error code. Predetermining a series of bit strings, with one absolute position being unambiguously assigned to each one of the series of bit strings. Comparing the bits of the code word with the predetermined series of bit strings, and if a match of all of the bits of the code word and the predetermined series of bits strings occurs, assigning a corresponding absolute position to the code word, and upon comparison for a match, any bits assigned an error code are not taken into account.

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Tacherting, Germany

Rudolf Mittmann