Data processing: measuring – calibrating – or testing – Measurement system – Speed
Reexamination Certificate
2006-05-09
2006-05-09
Hoff, Marc S. (Department: 2857)
Data processing: measuring, calibrating, or testing
Measurement system
Speed
C702S189000
Reexamination Certificate
active
07043395
ABSTRACT:
The method serves for detecting the magnetic flux, the rotor position and/or the rotational speed of the rotor in a single- or multiphase permanent magnet- or -synchronous motor or -generator using the stator voltage equationsin-line-formulae description="In-line Formulae" end="lead"?L·{dot over (i)}α=−R·iα+p·ω·ψmβ+uα Equation (1)in-line-formulae description="In-line Formulae" end="tail"?in-line-formulae description="In-line Formulae" end="lead"?L·{dot over (i)}β=−R·iβ−p·ω·ψmα+uβ Equation (2)in-line-formulae description="In-line Formulae" end="tail"?It is characterized in that with the evaluations one takes into account the energy conditions of the rotor, by which means one may achieve an accuracy which is considerably greater than known methods.
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Grundfos A/S
Hoff Marc S.
Jacox Meckstroth & Jenkins
Kim Paul
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