发明名称 |
ENCODER SIGNAL ANALYSIS SYSTEM FOR HIGH-RESOLUTION POSITION MEASUREMENT |
摘要 |
An apparatus and method for identifying the position of a magnetic shaft are provided. N field sensors are adjacently positioned at fixed locations relative to the shaft's periodic field, corresponding to 180/N relative phase shifts. A table provides N>2 predetermined signal models and a pre-identified position associated with each. An interpolator compares a representation of the N measured sensor signals to at least two predetermined models to generate a correction signal that provides another pre-identified position. The correction signal depends on N sensors for every position of the shaft. The correction signal is used to incrementally choose said another pre-identified position from the table as an approximate position of the shaft in an iterative process to find the minimum correction signal and identify the position. |
申请公布号 |
EP1979704(A4) |
申请公布日期 |
2013.11.13 |
申请号 |
EP20070763227 |
申请日期 |
2007.02.05 |
申请人 |
MOOG INC. |
发明人 |
LINDBERG, PAUL, M.;SCHULTZE, GARY;HOLLINGSWORTH, PHILLIP |
分类号 |
G01B7/14;G01D5/244;H02P6/00 |
主分类号 |
G01B7/14 |
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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