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:
Mar. 19, 2013
Filed:
Jun. 11, 2007
Mitsuyuki Taniguchi, Gotenba, JP;
Hirofumi Kukuchi, Fujiyoshida, JP;
Tadayoshi Matsuo, Yamanashi, JP;
Mitsuyuki Taniguchi, Gotenba, JP;
Hirofumi Kukuchi, Fujiyoshida, JP;
Tadayoshi Matsuo, Yamanashi, JP;
Fanuc Ltd., Yamanashi, JP;
Abstract
An amplitude calculation apparatus or an amplitude calculation program of an output signal of an encoder dividing a resurge waveform into a predetermined number of angle areas, presetting and storing coefficient α of the A-phase and the coefficient β of the B-phase corresponding to the divided angle areas, the coefficients being set so that αA+βB approximates the radius of the theoretical resurge waveform, calculating the radius of the resurge waveform as αA+βB, and making the calculated radius the amplitude of the output signal of the encoder or converting a phase angle θ of a quadrant n to a phase angle θ' of the quadrant 1, and calculating the radius of the resurge waveform as α|A|+β|B|, whereby the circuit size of the apparatus for calculating the resurge radius from the output of the encoder is reduced and the processing time by software for calculating the resurge radius is shortened.