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. 23, 2021
Filed:
Apr. 06, 2018
Canon Kabushiki Kaisha, Tokyo, JP;
Jun Sumioka, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A control apparatus controls driving a vibratory actuator. The control apparatus applies a signal to an electromechanical energy conversion device of a vibrator of the vibratory actuator to excite vibration on the vibrator and cause the vibrator and a driven object contacting the vibrator to move relative to one another by the vibration. If the vibratory actuator decelerates, the control apparatus changes a driving frequency of the signal to a frequency higher than a start-up frequency of the vibratory actuator and a preceding frequency at a deceleration start position. After changing the driving frequency of the signal, the control apparatus controls the signal driving frequency to perform deceleration control and fixes voltage of the signal in a deceleration period in which the vibratory actuator is decelerated.