Position measuring device and method for its operation

A technology for measuring instruments and measuring directions, which is applied in the directions of measuring devices, instruments, and electrical devices, and can solve problems such as complex solutions

Active Publication Date: 2018-04-20
DR JOHANNES HEIDENHAIN GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, such solutions are very complex and should therefore be avoided

Method used

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  • Position measuring device and method for its operation
  • Position measuring device and method for its operation
  • Position measuring device and method for its operation

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Embodiment Construction

[0036] exist figure 1 , 2 The basic structure of the position measuring device according to the invention in the form of a rotary generator operating according to the inductive measuring principle is shown in and 4 . A detailed description of such a rotation generator is contained, for example, in DE 197 51 853 A1 to which express reference is made here. At this point, however, it is expressly pointed out that the invention is not limited to this measuring principle.

[0037] according to Figure 4 , the rotation generator has a rotor 1 and a stator 2 . In the described exemplary embodiment, the rotor 1 comprises a shaft 1 . 1 , which is mounted, for example, in a rotationally fixed manner on the motor shaft to be measured. At the shoulder of the shaft 1.1, a code carrier 1.2 in the form of a code disc 1.2 is connected to the Figure 4 The indexing rails 1.21, 1.22, not shown, are fixed in a rotationally fixed manner.

[0038] The stator 2 comprises a housing 2.1, to whi...

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PUM

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Abstract

The invention relates to a position-measuring device with a code carrier and a method for its operation, the position-measuring device having: at least one first indexing track and a second indexing track, wherein the second The indexing track is an incremental indexing track for a first detector assembly that generates a first position signal by probing the first and second indexing tracks in the measuring direction for probing the second indexing track in the measuring direction A second detector assembly for generating a second position signal on a two-index track, a first position processing unit for processing the first position signal into a first absolute position value, and a first position processing unit for processing the second position signal into a second absolute position The value of the second position processing unit, wherein the second position processing unit can be initialized with an absolute auxiliary position value, and the absolute auxiliary position value is sent to the second position processing unit by the first position processing unit.

Description

technical field [0001] The invention relates to a position measuring device according to the invention for determining an absolute position value, which provides two position values ​​which are generated largely independently of each other, and a position measuring device according to the invention for such a position measuring device The corresponding method of operation. Background technique [0002] Position measuring devices mainly include rotation generators (Drehgeber) or angle measuring devices as well as length measuring devices. Rotary generators are frequently used as measuring instruments for electric drives, in particular for determining the absolute angular position of a motor shaft or drive shaft. Length measuring instruments are used, for example, to detect linear movements of tool slides in machine tools. For details regarding the construction of such a position measuring device, reference is made, for example, to the technical book Digitale Laengen-und Win...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B21/00G01D5/12
CPCG01D5/24438G01D5/24476G01D5/2455G06F1/00G06F2201/00G06F2101/00G01B7/30
Inventor J.奥伯豪泽B.施米德J.J.罗森勒纳-埃姆德W.施瓦格T.施维策尔H.迈耶M.O.蒂曼
Owner DR JOHANNES HEIDENHAIN GMBH
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