Electricity: motive power systems – Positional servo systems – Digital or numerical systems
Reexamination Certificate
2008-03-24
2010-12-28
Ro, Bentsu (Department: 2837)
Electricity: motive power systems
Positional servo systems
Digital or numerical systems
C318S661000, C318S400040, C318S400390, C318S599000
Reexamination Certificate
active
07859215
ABSTRACT:
A motor controller includes a reference signal generator; an A/D converter performing A/D conversion of the cosine and the sine signals outputted from a resolver; a first amplitude calculator calculating cosine and sine signal amplitudes based on twice-A/D converted cosine and sine signals respectively; a second amplitude calculator calculating averages of the cosine and the sine signals, and that calculates the amplitude of the cosine signal from a difference between the cosine signal average and a latest A/D converted cosine signal, and that calculates the amplitude of the sine signal from a difference between the sine signal average and a latest A/D converted sine signal; a synthesizer synthesizing the cosine and sine signal amplitudes obtained by the first and the second amplitude calculators respectively; a rotational angle calculator calculating a rotational angle based on the synthesized cosine and sine signal amplitudes; and a PWM controller.
REFERENCES:
patent: 5189353 (1993-02-01), Ezuka
patent: 5455498 (1995-10-01), Kakimoto et al.
patent: 6278388 (2001-08-01), Kushihara
patent: 6389373 (2002-05-01), Ohya
patent: 6931918 (2005-08-01), Herb
patent: 6948382 (2005-09-01), Sakai et al.
patent: 6972700 (2005-12-01), Kanekawa et al.
patent: 7009535 (2006-03-01), Kanekawa et al.
patent: 7047145 (2006-05-01), Ishizuka et al.
patent: 7135860 (2006-11-01), Miya et al.
patent: 7154404 (2006-12-01), Sato
patent: 7157906 (2007-01-01), Miya
patent: 7298109 (2007-11-01), Sakamaki et al.
patent: 7301333 (2007-11-01), Kuwahara
patent: 7343254 (2008-03-01), Otsuka et al.
patent: 7664619 (2010-02-01), Kameya et al.
patent: 2005-210839 (2005-08-01), None
Maekawa Sari
Nagai Kazunobu
Kabushiki Kaisha Toshiba
Paul Anthony M
Pearne & Gordon LLP
Ro Bentsu
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