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:
Jan. 30, 2024
Filed:
Nov. 07, 2019
Hitachi High-tech Corporation, Tokyo, JP;
Yasuaki Aoyama, Tokyo, JP;
Hiroyuki Kobayashi, Tokyo, JP;
Satoru Kaneko, Tokyo, JP;
Takeshi Tamakoshi, Tokyo, JP;
Ryosuke Hoshi, Tokyo, JP;
Katsuhiro Kambara, Tokyo, JP;
Hiroshi Watanabe, Tokyo, JP;
Kuniaki Onizawa, Tokyo, JP;
Hitachi High-Tech Corporation, Tokyo, JP;
Abstract
The present invention comprises: an object to be conveyed that has at least one permanent magnet; a magnetic polethat has a corecomprising a second magnetic body and a windingwound around the outer periphery of the core; a drive circuitfor supplying a current to the windingof the magnetic pole; a current detection unitfor detecting the value of the current flowing through the winding; and a computation unitfor estimating the position of the permanent magneton the basis of the current value detected by the current detection unitand controlling the value of the current supplied from the drive circuitto the windingon the basis of information about the estimated position of the permanent magnet