The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 30, 2006
Filed:
Sep. 17, 2002
Mimpei Morishita, Fuchu, JP;
Mimpei Morishita, Fuchu, JP;
Toshiba Elevator Kabushiki Kaisha, Tokyo-To, JP;
Abstract
The rotary detector according to this invention comprises a rotary detector unit C, Cwhich detects rotary motion of a rotor; and a rotary calculator unit C, C', C″ comprising a rotation angle detector, which detects the rotation angle of the rotor, and an angle speed detectorwhich detects the angle speed of the rotor, based on the output of the rotary detector unit. The rotary calculator unit comprises a trigonometrical calculator C, C′, C″ which calculates a sine value or a cosine value of the rotation angle detected by the rotary detector; a gain adjuster″ which multiplies the sine value or the cosine value, calculated by the trigonometrical calculator, by a predetermined gain; a multiplierwhich multiplies the output of the gain adjuster by the output of the angle speed detector; and a subtracterwhich subtracts the output of the multiplier from the output of the angle speed detector.