发明名称 |
METHOD FOR DETECTION AND COMPENSATION OF EDDY CURRENTS |
摘要 |
A distortion compensation method includes determining an undisturbed phase for at least one of a first position indication signal and a second position indication signal. The method includes determining an undisturbed ratio that relates the amplitude of the first position indication signal at a first frequency to the amplitude of the second position indication signal at a second frequency. The method also includes determining a disturbed amplitude of the position indication signal and adjusting a position indication based on the disturbed amplitude and phase, the undisturbed amplitude ratio, and the undisturbed phase. The method further comprises determining a relationship between the eddy current phase of the first position indication signal and the second position indication signal. |
申请公布号 |
WO2004091391(A1) |
申请公布日期 |
2004.10.28 |
申请号 |
WO2004CA00587 |
申请日期 |
2004.04.19 |
申请人 |
NORTHERN DIGITAL INC.;NIEMINEN, JOHN M.;KIRSCH, STEFAN R. |
发明人 |
NIEMINEN, JOHN M.;KIRSCH, STEFAN R. |
分类号 |
A61B5/06;G01N27/90;G01R33/565 |
主分类号 |
A61B5/06 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|