Invention Grant
- Patent Title: Position measuring device
- Patent Title (中): 位置测量装置
-
Application No.: US12989691Application Date: 2009-03-24
-
Publication No.: US08570621B2Publication Date: 2013-10-29
- Inventor: Jan Braasch , Wolfgang Holzapfel , Ulrich Benner , Gabriele Ehgartner , Robert Bernhard , Elmar Mayer , Martin Seichter
- Applicant: Jan Braasch , Wolfgang Holzapfel , Ulrich Benner , Gabriele Ehgartner , Robert Bernhard , Elmar Mayer , Martin Seichter
- Applicant Address: DE Traunreut
- Assignee: Dr. Johannes Heidenhain GmbH
- Current Assignee: Dr. Johannes Heidenhain GmbH
- Current Assignee Address: DE Traunreut
- Agency: Brinks Hofer Gilson & Lione
- Priority: DE102008022027 20080502
- International Application: PCT/EP2009/053437 WO 20090324
- International Announcement: WO2009/132901 WO 20091105
- Main IPC: H04N1/04
- IPC: H04N1/04

Abstract:
A position measuring device including a code having a sequence of code elements of equal width B that is disposed in a measurement direction and includes a first property and a second property. The sequence of codes elements includes a first set of code elements having the first property and a second set of code elements having the second property, wherein the first and second sets of code elements are each being disposed aperiodically. The position measuring device further including a scanning unit having a plurality of detectors for scanning the code and obtaining scanning signals, wherein a code word defining an absolute position is defined from the scanning signals. The position measuring device including an arrangement for forming an incremental signal from the scanning signals, wherein the arrangement includes a converter device and a collection device arranged downstream of the converter device and wherein the collection device forms respective intermittently periodic partial signals from the scanning signals derived from scanning positions in a spacing matrix.
Public/Granted literature
- US20110261422A1 POSITION MEASURING DEVICE Public/Granted day:2011-10-27
Information query