Coded data generation or conversion – Phase or time of phase change – Synchro or resolver signal
Reexamination Certificate
2008-02-25
2009-06-02
JeanPierre, Peguy (Department: 2819)
Coded data generation or conversion
Phase or time of phase change
Synchro or resolver signal
C702S085000
Reexamination Certificate
active
07541951
ABSTRACT:
A tracking loop type digital angle converter that operates so that a deviation between input and output angles always becomes zero by feeding back the output angle to the input angle, wherein in order to eliminate a case where a control deviation decreases an angle error between the input and output angles is in the vicinity of 180°, i.e., where response becomes low, there are provided a detected signal sign judging section (41) that judges signs of rotation detection signals to determine a quadrant where the input angle exists, and an output angle correcting section (42) for comparing an angle region of the output angle and the quadrant of the input angle to detect a state where the angle error is excessive, judging that the control response is low and carrying out a process for compensating the output angle.
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EP Extended Search Report, Jul. 16, 2008.
Gallagher & Lathrop
Japan Aviation Electronics Industry Limited
Jean-Pierre Peguy
Lathrop, Esq. David N.
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