发明授权
- 专利标题: Position-measuring device and method for transmitting information concerning movement
- 专利标题(中): 位置测量装置和传送关于运动的信息的方法
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申请号: US12184424申请日: 2008-08-01
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公开(公告)号: US07925462B2公开(公告)日: 2011-04-12
- 发明人: Marc Oliver Tiemann
- 申请人: Marc Oliver Tiemann
- 申请人地址: DE Traunreut
- 专利权人: Dr. Johannes Heidenhain GmbH
- 当前专利权人: Dr. Johannes Heidenhain GmbH
- 当前专利权人地址: DE Traunreut
- 代理机构: Kenyon & Kenyon LLP
- 优先权: DE102007036542 20070802
- 主分类号: G01P21/00
- IPC分类号: G01P21/00
摘要:
In a position-measuring device and a method for transmitting movement information from a position-measuring device to sequential electronics, the position-measuring device includes a position-measuring unit, a movement-measuring unit, an arithmetic logic unit and an interface unit. Position values of two objects in a measuring direction are measurable by the position-measuring unit. The movement-measuring unit is used to ascertain a movement value of the two objects. The position values and the movement value are supplied to the arithmetic logic unit which ascertains movement information in the form of a correction value that is suitable for calculating the movement value in sequential electronics from an instantaneous position value, at least one previous position value, a controller cycle time that indicates the time interval between the measurements of position values, and the correction value. The data-word length of the correction value is substantially less than the data-word length of the movement value.
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