Title:
Drive
Document Type and Number:
Japanese Patent JP6011193
Kind Code:
B2
Abstract:
The present invention provides a driving apparatus capable of suppressing the operation noise. A driving apparatus comprises a piezoelectric element expanding and contracting in accordance with a driving signal; a supporting shaft connected to said piezoelectric element; a movable body frictionally engaged with said supporting shaft and capable of moving along said supporting shaft; and a driving portion applying said driving signal including a first driving signal which moves said movable body towards a first direction to said piezoelectric element, wherein said driving portion can repeatedly apply said first driving signal against said piezoelectric element by taking a first time in between, and said first driving signal comprises a main driving waveform group which moves said movable body to said first direction, and a sub driving waveform group which is placed after said main driving waveform group by having a second rest time shorter than said first time in between.
Inventors:
Teru Suzuki
Masaru Uno
Imi Kazutomo
Yoshiaki Haga
Masaru Uno
Imi Kazutomo
Yoshiaki Haga
Application Number:
JP2012208675A
Publication Date:
October 19, 2016
Filing Date:
September 21, 2012
Export Citation:
Assignee:
tdk Corporation
International Classes:
H02N2/06; H01L41/083
Domestic Patent References:
| JP2009148062A | ||||
| JP7170763A | ||||
| JP2004056951A | ||||
| JP2001268951A | ||||
| JP2009089517A | ||||
| JP2000023474A | ||||
| JP2008211920A |
Attorney, Agent or Firm:
Maeda/Suzuki International Patent Corporation
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