Data processing: measuring – calibrating – or testing – Measurement system – Speed
Reexamination Certificate
2006-05-30
2006-05-30
Barlow, John (Department: 2863)
Data processing: measuring, calibrating, or testing
Measurement system
Speed
C702S148000
Reexamination Certificate
active
07054783
ABSTRACT:
The rotary detector according to this invention comprises a rotary detector unit C1, C1′which detects rotary motion of a rotor; and a rotary calculator unit C2, C2′, C2″ comprising a rotation angle detector, which detects the rotation angle of the rotor, and an angle speed detector47which detects the angle speed of the rotor, based on the output of the rotary detector unit. The rotary calculator unit comprises a trigonometrical calculator C3, C3′, C3″ which calculates a sine value or a cosine value of the rotation angle detected by the rotary detector; a gain adjuster57, 57′, 57″ which multiplies the sine value or the cosine value, calculated by the trigonometrical calculator, by a predetermined gain; a multiplier59, 59′which multiplies the output of the gain adjuster by the output of the angle speed detector; and a subtracter61, 61′which subtracts the output of the multiplier from the output of the angle speed detector.
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patent: 5760359 (1998-06-01), Nakano et al.
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Barlow John
Moffat Jonathan
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Toshiba Elevator Kabushiki Kaisha
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