LINEAR MOTOR CONTROL SYSTEM

WIPO Patent Application WO/2018/154895

A1

Provided is a linear motor control system capable of improving driving efficiency and vibration noise characteristics. The linear motor control system is provided with: a device provided with a mover 3 and an armature 2 and relatively reciprocating the mover 3 and the armature 2 in the axial direction, said mover 3 having one end connected to an elastic body 14 and having a permanent magnet 3a, said armature 2 having a winding 6 wound around a magnetic pole 4; and a control device 5 for controlling alternating voltage applied to the winding 6 on the basis of alternating current flowing through the winding 6 and detected by a current detection unit. The control device 5 has a fundamental wave extraction unit 58 and a current control unit 59 (harmonic attenuation unit) and controls the alternating voltage applied to the winding 6 on the basis of the fundamental wave component of the alternating current and harmonic attenuation voltage, said fundamental wave extraction unit 58 separating the alternating current flowing through the winding 6 and detected by the current detection unit into the fundamental wave component and a harmonic component, said current control unit 59 outputting the harmonic attenuation voltage capable of attenuating the harmonic component.

NAGATA SHUHEI (JP)
HATSUSE WATARU (JP)
SUZUKI TAKAHIRO (JP)
KOYAMA MASAKI (JP)

PCT/JP2017/042564

August 30, 2018

November 28, 2017

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HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD (JP)

H02P25/064

JPH0760188A	1995-03-07
JP2004056994A	2004-02-19
JP2001286185A	2001-10-12
JP2015119632A	2015-06-25

POLAIRE I.P.C. (JP)

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