ROTATION ANGLE DETECTOR-EQUIPPED ELECTRIC MOTOR, ELECTRIC MOTOR ROTATION ANGLE DETECTOR, AND METHOD FOR DETECTING ROTATION ANGLE OF ELECTRIC MOTOR EQUIPPED WITH COMMUTATOR

WIPO Patent Application WO/2018/207680

A1

A rotation angle detector (100) for detecting the rotation angle of an electric motor (10) equipped with a commutator (20) includes: a resistance setting unit (37) for setting a resistance value that corresponds to the resistance properties of the electric motor (10); and a rotation information calculation unit (36) for calculating information about the rotation of the electric motor (10) on the basis of the detected voltage value detected by a voltage detection unit (10a), a detected current value detected by a current detection unit (10b), and the set resistance value (Rm) set by the resistance setting unit (37). The resistance setting unit (37) is configured so as to derive an estimated resistance value (R'm) on the basis of the detected voltage value and the detected current value which were detected in a stable state of electric motor (10) rotations, and to update the set resistance value (Rm) using the estimated resistance value (R'm).

JPH05292794	HIGH/LOW SPEED LIMITER OF UNIVERSAL TYPE SERIES EXCITATION MOTOR
JPS58212575	CONTROLLER FOR ELEVATOR
JPS5499918	CONTROLLING OF MOTOR SPEED

MIYAKO IKUYASU (JP)
ABE TSUTOMU (JP)

PCT/JP2018/017395

November 15, 2018

May 01, 2018

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ALPS ELECTRIC CO LTD (JP)

H02P7/06

JP2012240656A	2012-12-10
JP2011087412A	2011-04-28
JP2002127922A	2002-05-09
JP2010130727A	2010-06-10
JP2001186726A	2001-07-06
US20140042944A1	2014-02-13

ITOH, Tadashige et al. (JP)

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