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Actuating device, manufacturing method therefor, and underwater acoustic transducer

A technology of actuating devices and actuators, which is applied in the direction of sound-emitting devices, instruments, and water resources assessment, and can solve problems such as fracture, easy damage, and low bending and torsional strength

Active Publication Date: 2016-12-07
BEIJING SUPERSONIC TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, for those cases where very thin single crystals are used to reduce the driving voltage, these single crystals that are not bonded to each other will be easily damaged due to low bending and torsional strength, and will break under the action of bending and twisting

Method used

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  • Actuating device, manufacturing method therefor, and underwater acoustic transducer
  • Actuating device, manufacturing method therefor, and underwater acoustic transducer
  • Actuating device, manufacturing method therefor, and underwater acoustic transducer

Examples

Experimental program
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Effect test

no. 1 example

[0037] Please refer to Figure 1 to Figure 4 , Shows a schematic structural diagram of an actuation device 100 provided by an embodiment of the present invention. The actuating device 100 includes a first actuator 110 and a support 120, and the support 120 is disposed in the first actuator 110.

[0038] The first actuator 110 includes a plurality of first single crystals 112, and the single crystals are rectangular piezoelectric single crystals in a transverse mode, preferably lead-based relaxor ferroelectric single crystals with ultra-high transverse strain. Including [011] direction polarization, [100] direction drive d 32 Single chip or [011] direction polarization, [0-11] direction driven d 31 Single wafer. The constituent material of the single chip may be a relaxor ferroelectric single crystal, for example: lead zinc niobate-lead titanate (PZN-PT), lead magnesium niobate-lead titanate (PMN-PT), lead magnesium niobate -Lead zirconate titanate (PMN-PZT), lead niobate indium-...

no. 2 example

[0049] Please refer to Figure 5 to Figure 7 It is shown that this embodiment provides an actuating device 100. The actuating device 100 includes a first actuator 110 and a support 120, and the support 120 is disposed in the first actuator 110. The difference from the above-mentioned embodiment is that the supporting member 120 is a single-chip pair 126, and the single-chip pair 126 is disposed in the first actuator 110 for stably supporting the first actuator. 器110.

[0050] The single-chip pair 126 includes two second single-chips 123 arranged oppositely, and the second single-chip 123 is the same as the single-chip provided in the above-mentioned embodiment. Preferably, the two second single-chips of the single-chip pair 126 123 parallel settings. The relative positional relationship between the at least one single-chip pair 126 and the first actuator 110 can be various, including but not limited to the three mentioned in the following embodiments.

[0051] See Figure 5 The r...

no. 3 example

[0057] See Figure 8 , Shows a schematic structural diagram of a hydroacoustic transducer 200 provided in this embodiment. The hydroacoustic transducer 200 includes a front cover 210, a rear mass 220, and the actuation device 100 provided in the foregoing embodiment. The actuation device 100 includes a first connection end and a second connection end that are axially arranged, the front cover 210 is connected to the first connection end of the actuation device 100, and the second connection end of the actuation device 100 is connected to the The rear mass 220 is connected.

[0058] The underwater acoustic transducer 200 refers to the use of the piezoelectric effect of crystals (quartz or potassium sodium tartrate), piezoelectric ceramics (barium titanate and lead zirconate titanate, etc.) or the magnetostrictive effect of iron-nickel alloys. work. The so-called piezoelectric effect is to cut the piezoelectric body into slices in a certain direction, and apply pressure on the pie...

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Abstract

The invention provides an actuating device, a manufacturing method therefor, and an underwater acoustic transducer. The actuating device and the manufacturing method therefor aim at a technical problem of breakage under the action of bending and torsion because an actuator in the prior art employs a longer thin single crystal wafer and the thin single crystal wafer is liable to be damaged because of the low anti-torsion strength. The interior of a first actuator which is formed by a plurality of first single crystal wafers is provided with a supporting part, and the axial length of the supporting part is consistent with the axial length of the first actuator. The anti-torsion strength of the first single crystal wafers of the first actuator is improved through the supporting part, thereby prolonging the service life of the actuating device and the service life of the underwater acoustic transducer employed by the same.

Description

Technical field [0001] The present invention relates to the field of actuation equipment, and in particular, to an actuation device and a manufacturing method thereof, and an underwater acoustic transducer. Background technique [0002] The design frequency based on the longitudinal vibration type composite rod transducer ranges from several kilohertz to tens of kilohertz. It has a wide range of applications, including communication sonar, submarine imaging sonar, active sonar for searching and tracking underwater targets, Monitor the active sonar and sonar weapons of the port channel. [0003] The traditional longitudinal vibration type composite rod transducer is composed of d 33 It is composed of PZT piezoelectric ceramic ring stack (active transduction material), horn-shaped front cover plate and heavy mass rear cover plate. The PZT ceramic rings in the piezoelectric stack are usually connected in parallel, which can reduce the driving voltage of the transducer. The piezoelec...

Claims

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Application Information

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IPC IPC(8): G10K9/122H03H9/205
CPCG10K9/122H03H9/205G10K2200/11B06B1/0607B06B2201/74
Inventor 王志鹏刘国希王鹏辉石花朵
Owner BEIJING SUPERSONIC TECH CO LTD
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