ELECTRICAL ANGLE ACQUISITION SYSTEM, ELECTRICAL ANGLE ACQUISITION METHOD, ELECTRICAL ANGLE ACQUISITION PROGRAM, ELECTRICAL ANGLE ACQUISITION CHARACTERISTIC MEASUREMENT SYSTEM, ELECTRICAL ANGLE ACQUISITION CHARACTERISTIC MEASUREMENT METHOD, AND ELECTRICAL ANGLE ACQUISITION CHARACTERISTIC MEASUREMENT PROGRAM

Title:

Document Type and Number:

WIPO Patent Application WO/2019/093074

Kind Code:

A1

Abstract:

[Problem] To provide a technique for acquiring an accurate electrical angle. [Solution] An electrical angle acquisition system that acquires an electrical angle of a one-phase excitation two-phase output rotation detector on the basis of an excitation signal and an output signal of the rotation detector, the electrical angle acquisition system comprising: an excitation signal acquisition unit that acquires, by Fourier transformation, an excitation frequency component of the excitation signal; an output signal acquisition unit that acquires, by Fourier transformation, an excitation frequency component of the two-phase output signal; a phase relationship acquisition unit that acquires, on the basis of the excitation frequency component of the excitation signal and the excitation frequency component of the two-phase output signal, the relationship of the phases of the excitation signal and the two-phase output signal; an amplitude acquisition unit that acquires, on the basis of the excitation frequency component of the two-phase output signal, the amplitude of the two-phase output signal; and an electrical angle acquisition unit that acquires, on the basis of the relationship of the phases and the amplitude of the two-phase output signal, the electrical angle of the rotation detector.

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Inventors:

AKUTSU KAZUSHI (JP)
IMAEDA HIROSHI (JP)

Application Number:

PCT/JP2018/038316

Publication Date:

May 16, 2019

Filing Date:

October 15, 2018

Export Citation:

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Assignee:

MATSUO IND INC (JP)

International Classes:

G01D5/20

Foreign References:

JP2000055695A	2000-02-25
JP2008139100A	2008-06-19
JP2003344106A	2003-12-03
JP2013061161A	2013-04-04
JP2016138870A	2016-08-04
JP2015004590A	2015-01-08
JP2004279231A	2004-10-07
JP2005208028A	2005-08-04
US20140055129A1	2014-02-27

Attorney, Agent or Firm:

KNOWLEDGE PARTNERS PPC (JP)

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