Title:
PIEZOELECTRIC ACTUATOR AND LOW FREQUENCY UNDERWATER PROJECTOR
Document Type and Number:
WIPO Patent Application WO/2018/041241
Kind Code:
A1
Abstract:
Provided are a piezoelectric actuator (100) and a low frequency underwater projector (200), comprising a first level connector (110), a second level connector (120) disposed opposite to the first level connector (110), a set of first piezoelectric material columns (130), a set of second piezoelectric material columns (140), and a set of third piezoelectric material columns (150). The set of first piezoelectric material columns (130) is connected between the first level connector (110) and the second level connector (120). With excitation at an appropriate voltage, the net extending or contraction displacement of the piezoelectric actuator (100) is almost equal to the sum of the displacements of the set of first piezoelectric material columns (130), the set of second piezoelectric material columns (140), and the set of third piezoelectric material columns (150). The axial displacements of the piezoelectric materials can be superimposed and increased, thus the sound power capacity of the low frequency underwater projector (200) using the piezoelectric actuator (100) as a driving mechanism is increased. The piezoelectric actuator (100) and the low frequency underwater projector (200) provided in the embodiments of the present invention improve the problem of the limited sound power capacity of the existing low frequency underwater projectors.
Inventors:
WANG PENGHUI (CN)
LIU GUOXI (CN)
WANG ZHIPENG (CN)
SHI HUADUO (CN)
LIU GUOXI (CN)
WANG ZHIPENG (CN)
SHI HUADUO (CN)
Application Number:
PCT/CN2017/100095
Publication Date:
March 08, 2018
Filing Date:
August 31, 2017
Export Citation:
Assignee:
BEIJING SUPERSONIC TECH CO LTD (CN)
International Classes:
G10K9/122; H01L41/083
Domestic Patent References:
| WO2001050811A1 | 2001-07-12 |
Foreign References:
| CN106205583A | 2016-12-07 | |||
| CN206134236U | 2017-04-26 | |||
| CN102136268A | 2011-07-27 | |||
| CN102071927A | 2011-05-25 | |||
| CN103646642A | 2014-03-19 | |||
| US5508976A | 1996-04-16 | |||
| CN201610798548A | 2016-08-31 | |||
| CN102136268A | 2011-07-27 |
Other References:
See also references of EP 3507794A4
Attorney, Agent or Firm:
CHOFN INTELLECTUAL PROPERTY (CN)
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