Title:
駆動装置
Document Type and Number:
Japanese Patent JP4224946
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a driver which can suppress disorder of a displacement of an electromechanical transducer and suppress electromagnetic noise. SOLUTION: The driver comprises the electromechanical transducer, a drive friction element fixed to one end in the expanding direction of the electromechanical transducer, an engagement element engaged with the drive friction element by a frictional force, and a drive circuit which applies a drive voltage to the electromechanical transducer for moving an engagement member. The drive circuit applies a drive voltage to the electromechanical transducer, so as to have a displacement Xp of the electromechanical transducer expressed by a equation Xp=-Xpo sin(2π.fdt)+sin(2π.2fdt)/b} (1).
Inventors:
Ryuichi Yoshida
Application Number:
JP2001021606A
Publication Date:
February 18, 2009
Filing Date:
January 30, 2001
Export Citation:
Assignee:
Konica Minolta Holdings Co., Ltd.
International Classes:
H01L41/083; H02N2/00
Domestic Patent References:
| JP200050657A | ||||
| JP2000287466A |
Attorney, Agent or Firm:
Aoyama Aoi
Akira Ito
Toshinori Yamamoto
Akira Ito
Toshinori Yamamoto