发明名称 |
Interpolation device for scale arrangement. |
摘要 |
<p>An interpolation device for an scale arrangement receives sine wave and cosine wave signals indicative of a measuring data from the scale arrangement and calculates a DC offset value, an amplitude coefficient and an amount of a phase drift on the basis of the received signals. The interpolation device outputs a correct angle signal upon removing a DC offset, a gain level error, a gain unbalance and a phase drift from received signals. Therefore, the interpolation device realizes a mechanical structure of the scale arrangement to be simple. <IMAGE></p> |
申请公布号 |
EP0599175(A1) |
申请公布日期 |
1994.06.01 |
申请号 |
EP19930118447 |
申请日期 |
1993.11.15 |
申请人 |
SONY MAGNESCALE, INC. |
发明人 |
ISHIMOTO, SHIGERU;MATUYAMA, YASUHIKO;MAEJIMA, HIDEO |
分类号 |
G01D5/245;G01D5/244;(IPC1-7):G01D5/244;G01D18/00 |
主分类号 |
G01D5/245 |
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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