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:
Apr. 04, 2023
Filed:
Jul. 06, 2020
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Hiromitsu Morita, Ageo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02N 2/00 (2006.01); G03B 13/34 (2021.01); H02N 2/14 (2006.01); H02N 2/06 (2006.01); G03B 3/10 (2021.01);
U.S. Cl.
CPC ...
H02N 2/001 (2013.01); G03B 3/10 (2013.01); G03B 13/34 (2013.01); H02N 2/06 (2013.01); H02N 2/14 (2013.01);
Abstract
A controller is capable of reducing time required to stop a control target at a target stop position as a final stop position. The controller drives a vibration element including a piezoelectric element by an AC signal to thereby move a contact body, in contact with the vibration element, relative to the vibration element. The controller controls a pulse duty cycle of a signal converted to the AC signal based on a difference between a target stop position, which is a final stop position of the contact body, and a current position of the contact body, and an actual speed of the contact body.