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.

Date of Patent:
Jul. 20, 2021

Filed:

Oct. 06, 2017
Applicant:

Rohm Co., Ltd., Kyoto, JP;

Inventors:

Jun Maede, Kyoto, JP;

Akihito Saito, Kyoto, JP;

Yoshihiro Sekimoto, Kyoto, JP;

Assignee:

ROHM CO., LTD., Kyoto, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 7/02 (2021.01); G02B 7/08 (2021.01); G01J 1/04 (2006.01); G01D 5/14 (2006.01); G01D 3/036 (2006.01); G01K 13/00 (2021.01); H02K 11/22 (2016.01); H02K 11/215 (2016.01);
U.S. Cl.
CPC ...
G02B 7/028 (2013.01); G01D 3/036 (2013.01); G01D 3/0365 (2013.01); G01D 5/145 (2013.01); G01J 1/0403 (2013.01); G01K 13/00 (2013.01); G02B 7/08 (2013.01); H02K 11/215 (2016.01); H02K 11/22 (2016.01);
Abstract

A position detection unit generates a position detection value Pthat indicates the position of a control target. A temperature detection unit generates a temperature detection value that indicates the temperature. A correction unit corrects the position detection value P. A controller generates a control instruction value Ssuch that the position detection value Psubjected to the correction matches a position instruction value Pthat indicates the target position of the control target. A driver unit applies a driving signal that corresponds to the control instruction value Sto an actuator. The correction unit corrects the position detection value Psuch that the relation between the position detection value Pand the actual position exhibits linearity that is uniform independent of the temperature.


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