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:
Nov. 21, 2017
Filed:
Jul. 11, 2016
Applicant:
Canon Kabushiki Kaisha, Tokyo, JP;
Inventor:
Hiromitsu Morita, Sakado, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 7/02 (2006.01); G03B 13/34 (2006.01); G02B 7/04 (2006.01); H02N 2/14 (2006.01);
U.S. Cl.
CPC ...
G03B 13/34 (2013.01); G02B 7/04 (2013.01); H02N 2/14 (2013.01);
Abstract
When stopping a vibration type actuator at a final target stopping position, driving frequency and phase difference of AC signals input to a piezoelectric element are set in accordance with a first deviation obtained from a command position sequentially determined and a relative position of a vibrating member and driven element, and also pulse duty is adjusted in accordance with a second deviation obtained from a final target stopping position and the relative position.