PLANAR MOTOR

To provide a planar motor capable of specifying the position of a needle by using multiple coils for imparting thrust to the needle.SOLUTION: A planar motor 10 includes a needle 20 having a first magnetic substance 22 and a second magnetic substance 23, a stator 30 having a principal surface 31a fac...

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Bibliographic Details
Main Authors AOKI SAKI, NISHIMORI TAISUKE, AKIYAMA TOSHIHIRO, WAKABAYASHI SHUNICHI
Format Patent
LanguageEnglish
Japanese
Published 31.10.2019
Subjects
CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
DYNAMO-ELECTRIC MACHINES
ELECTRICITY
GENERATION
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Summary:To provide a planar motor capable of specifying the position of a needle by using multiple coils for imparting thrust to the needle.SOLUTION: A planar motor 10 includes a needle 20 having a first magnetic substance 22 and a second magnetic substance 23, a stator 30 having a principal surface 31a facing the needle 20, and multiple coils 33 arranged along the principal surface 31a, and a control section 50 for controlling the current supplied to the multiple coils 33. The control section 50 supplies at least some of the multiple coils 33 with a current for position detection of the needle 20, and specifies the position of the needle 20 by detecting a change in the current for position detection occurring due to approach of the second magnetic substance 23 to at least some coils.SELECTED DRAWING: Figure 1 【課題】可動子に推力を与えるための複数のコイルを用いて可動子の位置を特定することができる平面モータを提供する。【解決手段】平面モータ１０は、第一磁性体２２及び第二磁性体２３を有する可動子２０と、可動子２０と対向する主面３１ａ、及び、主面３１ａに沿って配置される複数のコイル３３を有する固定子３０と、複数のコイル３３に供給される電流を制御する制御部５０とを備える。制御部５０は、複数のコイル３３の少なくとも一部のコイルに可動子２０の位置検出用の電流を供給し、少なくとも一部のコイルに第二磁性体２３が近づくことによって生じる位置検出用の電流の変化を検出することにより、可動子２０の位置を特定する。【選択図】図１
Bibliography:Application Number: JP20180084586