发明名称 |
SCALE- UND READHEAD-SYSTEM |
摘要 |
A method of calibrating a scale measurement apparatus. A scale has scale markings arranged to form an incremental pattern and at least one scale mark. A readhead has an incremental detector means which produces an output signal and a scale mark detector means for producing a signal having a zero crossing. The readhead is moved relative to the scale. The output from the incremental detector is used to determine a predetermined phase in the output signal and the value of the signal from the scale mark detector corresponding to the predetermined phase in the output signal from the incremental detector on either side of the zero crossing is determined. These values are used to define the width of the scale mark pulse. |
申请公布号 |
DE602006019765(D1) |
申请公布日期 |
2011.03.03 |
申请号 |
DE20066019765T |
申请日期 |
2006.11.06 |
申请人 |
RENISHAW PLC, WOTTON-UNDER-EDGE |
发明人 |
HOWLEY, COLIN KEITH |
分类号 |
G01D5/36;G01D5/347 |
主分类号 |
G01D5/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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