CN204271930U - Piezoelectric anisotropy tube drive device - Google Patents

Abstract

The utility model is applicable to piezoelectric driving technology field, provide a kind of Piezoelectric anisotropy tube drive device, comprise driver, basal body pipe, also comprise fixed cover and be located at the madial wall of basal body pipe or/and lateral wall and for driving described basal body pipe to produce the piezo tube of axial deformation to make basal body pipe, piezo tube is electrically connected on described driver by least two strands of wires, and described wire comprises metal guide battery core and is coated on the plastic insulation layer of described metal guide battery core.Piezoelectric anisotropy tube drive device provided by the utility model, piezo tube is fixed on basal body pipe skin, internal layer or ectonexine, make basal body pipe produce axial driving force and displacement by driving this piezo tube, have lightweight, structure is simple, easy to make, dynamic driving is effective, bearing capacity is strong, actuating force and displacement can the advantages such as flexible design, the different demands to driving element such as various micro-nano Precise Position System, micro-Active Vibration Control and vibrating isolation system can be met, there is good versatility.

Description

Piezoelectric anisotropy tube drive device

Technical field

The utility model belongs to piezoelectric driving technology field, particularly relates to a kind of Piezoelectric anisotropy tube drive device.

Background technology

Piezoelectric actuator has the features such as fast response time, energy consumption are low, is widely used as the driving element in all kinds of smart material and structure, is specially adapted to be used as the driving element in all kinds of micro-Active Vibration Control and active isolation systems.

Piezoelectric actuator conventional at present mainly contains: piezoelectric patches, piezoelectric pile and some special Piezoelectric Driving structures.Wherein, piezoelectric patches is the simplest class-1 piezoelectric driver, can being made into strip or cylindrical etc. several, usually according to specifically driving requirement, it directly being pasted in corresponding structure, to realize driving requirement; Piezoelectric pile uses more class-1 piezoelectric driver at present, and it forms an independently piezoelectric driving device by being superimposed by multi-disc piezoelectric patches.Piezoelectric actuator of the prior art, actuating force and the displacement of piezoelectric patches driver are more weak, and its application is relevant with concrete structure, and application scenario is limited; There is the deficiencies such as cost of manufacture is high, weight is large, mechanical strength is not good enough in piezoelectric stack driver, is difficult to the needs of satisfied most of micro-Active Vibration Control and active vibration isolation system; Then driveability is single, structure is special for some other special piezoelectric actuator, and versatility is bad, is difficult to the needs meeting all kinds of micro-Active Vibration Control and active vibration isolation system.

Utility model content

The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, provides a kind of Piezoelectric anisotropy tube drive device, and this Piezoelectric anisotropy tube drive device is lightweight, structure is simple, easy to make, dynamic driving is effective and bearing capacity is strong.

The technical solution of the utility model is: a kind of Piezoelectric anisotropy tube drive device, comprise driver, basal body pipe, also comprise fixed cover and be located at the madial wall of described basal body pipe or/and lateral wall and for driving described basal body pipe to produce the piezo tube of axial deformation to make described basal body pipe, described piezo tube is electrically connected on described driver by least two strands of wires, and described wire comprises metal guide battery core and is coated on the plastic insulation layer of described metal guide battery core.

As the further improvement of the technical program, the cross section of described basal body pipe is circular.

As the further improvement of the technical program, described basal body pipe adopts copper, copper alloy, aluminium, aluminium alloy, titanium, titanium alloy or plastic material to make.

As the further improvement of the technical program, described piezo tube is adhered to the inner side of described basal body pipe or/and outside by sticky object.

As the further improvement of the technical program, inside described basal body pipe or outside is bonded with at least two described piezo tube, and each described piezo tube is connected in parallel or is connected in series.

As the further improvement of the technical program, described piezo tube comprises at least two sections of arc piezoelectric segments, and each described arc piezoelectric segments is surrounded and formed described piezo tube, and each described arc piezoelectric segments is adhered to the inner side of described basal body pipe or/and outside.

As the further improvement of the technical program, each described piezo tube comprises four sections of arc piezoelectric segments.

As the further improvement of the technical program, described sticky object is insulative glue.

As the further improvement of the technical program, between described basal body pipe and described piezo tube, be provided with concave-convex fit structure.

As the further improvement of the technical program, described piezo tube does not protrude from the two ends of described basal body pipe.

Piezoelectric anisotropy tube drive device provided by the utility model, provide a kind of Piezoelectric anisotropy tube drive device, it is outer that piezo tube is fixed on thin-walled basal body pipe, internal layer or ectonexine, described piezo tube is electrically connected on described driver by least two strands of wires, basal body pipe is made to produce certain actuating force and displacement by driving this piezo tube, thus form an independently piezoelectric actuator, have lightweight, structure is simple, easy to make, dynamic driving effective (amplitude-versus-frequency curve), bearing capacity is strong, actuating force and displacement can the advantages of flexible design, various micro-Active Vibration Control and active vibration isolation system can be met to the different demands of driving element, there is good versatility.

Accompanying drawing explanation

In order to be illustrated more clearly in the technical scheme in the utility model embodiment, be briefly described to the accompanying drawing used required in embodiment below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is the front view of the Piezoelectric anisotropy tube drive device that the utility model embodiment provides;

Fig. 2 is the left view of the Piezoelectric anisotropy tube drive device that the utility model embodiment provides;

Fig. 3 is the front view of the Piezoelectric anisotropy tube drive device that the utility model embodiment provides;

Fig. 4 is the left view of the Piezoelectric anisotropy tube drive device that the utility model embodiment provides;

Fig. 5 is the theory analysis schematic diagram of the Piezoelectric anisotropy tube drive device that the utility model embodiment provides;

Fig. 6 is the amplitude-versus-frequency curve figure of the Piezoelectric anisotropy tube drive device that the utility model embodiment provides;

Fig. 7 is the phase-frequency characteristic curve chart of the Piezoelectric anisotropy tube drive device that the utility model embodiment provides;

Fig. 8 is the amplitude-versus-frequency curve figure of the piezoelectric pile that prior art provides;

Fig. 9 is the phase-frequency characteristic curve chart of the piezoelectric pile that prior art provides.

Embodiment

In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.

It should be noted that, when element is called as " being fixed on " or " being arranged at " another element, it can directly on another element or may there is centering elements simultaneously.When an element is known as " being connected to " another element, it can be directly connected to another element or may there is centering elements simultaneously.

Also it should be noted that, the orientation term such as left and right, upper and lower in the present embodiment, is only relative concept or be reference with the normal operating condition of product each other, and should not be regarded as have restrictive.

As depicted in figs. 1 and 2, a kind of Piezoelectric anisotropy tube drive device that the utility model embodiment provides, comprise driver 300, basal body pipe 100 in a tubular form, also comprise the madial wall that is sheathed on described basal body pipe 100 or/and lateral wall and for driving described basal body pipe 100 with the piezo tube 200 making described basal body pipe 100 produce axial deformation, described piezo tube 200 is electrically connected on described driver 300 by least two strands of wires 400, and described wire 400 comprises metal guide battery core and is coated on the plastic insulation layer of described metal guide battery core.Powered up to piezo tube 200 by driver 300, piezo tube 200 is made to produce corresponding axial deformation, basal body pipe 100 is made to produce certain actuating force and displacement by driving this piezo tube 200, thus form an independently piezoelectric actuator 300, and make use of the support strength of basal body pipe 100, actuating force and displacement stronger, piezo tube 200 stressing conditions is improved, the mechanical strength of device is high, and reduce cost of manufacture, alleviate weight, most of micro-Active Vibration Control and active vibration isolation system can be met to the needs of driving element, applied widely, reliability is high.

Particularly, the cross section of described basal body pipe 100 can in circular etc., and it is convenient to processing, and the cross section of certain basal body pipe 100 also can be rectangular, oval etc., all belongs to protection range of the present utility model.

Or; also can in two sheathed middle sandwicheds of basal body pipe 100 piezo tube 200 described at least one; the i.e. inner side of piezo tube 200 and the outer side bonds of one of them basal body pipe 100; the outside of piezo tube 200 and the interior side bonds of another basal body pipe 100, also belong to protection range of the present utility model.Understandably, can also above-mentioned two basal body pipes 100 and being arranged on the basis of the piezo tube 200 between two basal body pipes 100, continue at the sheathed piezo tube 200 in inner side or outside and basal body pipe 100, its quantity and the number of plies can set according to actual conditions.Such as, basal body pipe 100 is provided with at least three, each basal body pipe 100 vary in size and height can be equal, each basal body pipe 100 is sheathed successively, can be embedded with piezo tube 200 between adjacent basal body pipe 100.Or, basal body pipe 100 is provided with at least two, each basal body pipe 100 vary in size and height can be equal, each basal body pipe 100 is sheathed successively, piezo tube 200 can be embedded with between adjacent basal body pipe 100, the inner side of the basal body pipe 100 of innermost layer also can be bonded with piezo tube 200, and outermost basal body pipe 100 also can be provided with piezo tube 200.

Particularly, described basal body pipe 100 can adopt copper, copper alloy, aluminium, aluminium alloy or plastic or other material to make, and in the present embodiment, basal body pipe 100 adopts copper product to make, and basal body pipe 100 can be copper pipe, its excellent performance and cost is low.

Particularly, described piezo tube 200 is adhered to the inner side of described basal body pipe 100 or/and outside by sticky object, and this connected mode is reliable.In embody rule, described sticky object can be insulative glue etc., forms adhesive linkage after its solidification.Understandably, piezo tube 200 is also fixedly connected with by alternate manner or takes shape in madial wall, the lateral wall of described basal body pipe 100.

Particularly, inside described basal body pipe 100 or outside can be bonded with the piezo tube 200 be connected in parallel described at least two, to improve actuating force.

Concrete, the end of piezo tube 200 does not protrude from the end of basal body pipe 100.

Particularly, as shown in Figure 3 and Figure 4, described piezo tube 200 comprises at least two sections of arc piezoelectric segments 210, and each described arc piezoelectric segments 210 is surrounded and formed described piezo tube 200, each described arc piezoelectric segments 210 is adhered to the inner side of described basal body pipe 100 or/and outside, so that assembling.

In the present embodiment, each described piezo tube 200 comprises four sections of arc piezoelectric segments 210.The method of the quartering can be adopted, whole piezo tube 200 is divided into the quartering, then is pasted on the outer surface of basal body pipe 100, be conducive to processing and fabricating, facilitate piezo tube 200 to paste; Decrease radial deformation circumferentially, improve driving element functional reliability; This symmetrical sticking structure does not affect Piezoelectric anisotropy pipe axial driving force and displacement.

In embody rule, concave-convex fit structure can be provided with between described basal body pipe 100 and described piezo tube 200, such as, bulge-structure has been wholely set in the inner side of piezo tube 200, correspondingly be provided with the sunk structure mated with bulge-structure at the sidewall of basal body pipe 100, to improve the reliability of device further.Bulge-structure can in the form of a ring or bulk etc., and the sidewall of basal body pipe 100 is correspondingly provided with annular groove, depression etc., and bulge-structure can insert in sunk structure.

Particularly, described piezo tube 200 does not protrude from the two ends of described basal body pipe 100.

During concrete manufacture, first piezo tube 200 along the circumferential direction can be cut into quarter, be then pasted on the outer surface of basal body pipe 100 or/and inner surface with insulating cement.So on each basal body pipe 100, paste four piezo tube 200 at regular intervals, and complete the making of a copper-Piezoelectric anisotropy pipe driver.

Basal body pipe 100 outer surface is pasted on by piezo tube 200 driving element is cut into the quartering, because PZT piezoelectric fragility is larger, due to the existence of d32 strain effect, make to produce stretch/shrink strain at circumferencial direction, if keep circumference overall structure, then under additional action of alternative electric field, piezo tube 200 may be made to produce and radial expand and reduce distortion, long-term work then may cause piezo tube 200 to drive the inefficacy of function and cracked.Therefore, the design adopts the method for the quartering, whole piezo tube 200 is divided into the quartering, then is pasted on copper pipe outer surface.The advantage of the method has:

(1) be conducive to processing and fabricating, facilitate piezo tube 200 to paste;

(2) decrease radial deformation circumferentially, improve driving element functional reliability;

(3) this symmetrical sticking structure does not affect matrix-Piezoelectric anisotropy pipe axial driving force and displacement.

Below the Piezoelectric anisotropy tube drive device that the utility model embodiment provides is analyzed, theoretical according to linear strain, carry out theory deduction and analysis to the static drive performance of matrix-Piezoelectric anisotropy pipe driver, this static drive performance mainly comprises actuating force and dependent variable.

As shown in Figure 5, owing to being paste with alite paste between piezo tube 200 and thin-walled basal body pipe 100, alite paste forms adhesive linkage 300, therefore tensile deformation (compression situation is similar) can be produced when the voltage effect of piezoelectric drive element excited target, thus under shearing force Q effect, thin-walled basal body pipe 100 stretcher strain can be caused.Compression stress suffered by piezoelectric drive element is P _p, tensile force suffered by thin-walled basal body pipe 100 is P _m.

By Fig. 5:

$\left\{\begin{array}{c}{P}_P=Q_P\\ P_M=Q_M\end{array}\right.---\left(1\right)$

Adhered layer strain transfer efficiency eta _εrefer to thin-walled basal body pipe 100 because of axial strain caused by piezoelectric drive element effect and piezoelectric drive element itself produce the ratio of axial strain amount, its mathematic(al) representation is:

${\mathrm{\η}}_{\mathrm{\ϵ}}=\frac{{\mathrm{\ϵ}}_M}{{\mathrm{\ϵ}}_P}---\left(2\right)$

Wherein, ε _mfor the axial strain amount that thin-walled basal body pipe 100 produces; ε _pthe line shaft produced for piezo tube 200 is to dependent variable; And 0< η _ε≤ 1.

Adhered layer shear stress transmission efficiency η _qrefer to shear stress between adhered layer 300 and thin-walled basal body pipe 100 contact-making surface and the ratio of shear stress between adhered layer 300 and piezoelectric drive element contact-making surface, its mathematic(al) representation is:

${\mathrm{\&eta;}}_Q=\frac{Q_M}{Q_P}---\left(3\right)$

Wherein, Q _mfor the shear stress between adhered layer 300 and thin-walled basal body pipe 100 contact-making surface; Q _pfor the shear stress between adhered layer 300 and piezoelectric drive element contact-making surface; 0< η _q≤ 1.

Theoretical according to linear strain, the static mechanical of thin-walled basal body pipe 100 closes and is:

${\mathrm{\&epsiv;}}_M=\frac{{\mathrm{\&sigma;}}_M}{E_M}=\frac{P_M}{A_M{E}_M}---\left(4\right)$

Wherein, σ _mfor the axial stress of thin-walled basal body pipe 100; E _mfor the modulus of elasticity of thin-walled basal body pipe 100; A _mfor the sectional area of thin-walled basal body pipe 100.

According to piezoelectric equations, when extrinsic motivated voltage makes piezo tube 200 produce axial tension distortion, the axial overall strain amount ε of piezo tube 200 _pfor:

${\mathrm{\&epsiv;}}_P={\mathrm{\&epsiv;}}_{\mathrm{\&sigma;}}+{\mathrm{\&epsiv;}}_E=d_{31}\frac{U}{t}-s_{11}^E\frac{P_P}{A_P}---\left(5\right)$

Wherein, U is the extrinsic motivated voltage of piezo tube 200; T is the thickness of piezo tube 200; d ₃₁for 200 piezoelectric moduluses of piezo tube; for piezo tube 200 elastic compliant coefficient; A _pfor the sectional area of piezo tube 200.

By (2)-(5) formula, obtaining the static drive performance of matrix-Piezoelectric anisotropy pipe driver when consideration adhered layer 300 affects is:

$\left\{\begin{array}{c}{P}_M=\left(\frac{d_{31}}{t}U\right)/(\frac{1}{{\mathrm{\&eta;}}_{\mathrm{\&epsiv;}}{A}_M{E}_M}+\frac{s_{11}^E}{{\mathrm{\&eta;}}_Q{A}_P})\\ {\mathrm{\&epsiv;}}_M=\left(\frac{d_{31}}{t}U\right)/(\frac{1}{{\mathrm{\&eta;}}_{\mathrm{\&epsiv;}}}+\frac{s_{11}^E{A}_M}{{\mathrm{\&eta;}}_Q{A}_P}{E}_M)\end{array}\right.---\left(6\right)$

Relative to piezo tube 200 and thin-walled basal body pipe 100 thickness, adhered layer 300 thickness is usually very little, can ignore, i.e. η _εand η _qcan be taken as 1, then the static drive performance of matrix-Piezoelectric anisotropy pipe driver is:

$\left\{\begin{array}{c}{P}_M=\left(\frac{d_{31}}{t}U\right)/(\frac{1}{A_M{E}_M}+\frac{s_{11}^E}{A_P})\\ {\mathrm{\&epsiv;}}_M=\left(\frac{d_{31}}{t}U\right)/(1+\frac{s_{11}^E{A}_M}{A_P}{E}_M)\end{array}\right.---\left(7\right)$

From (7) formula, thin-walled basal body pipe 100 axial driving force and axial strain and thin-walled basal body pipe 100 modulus of elasticity, sectional area, piezoelectric element piezoelectric strain constant, thickness, sectional area, elastic compliant coefficient, and the relating to parameters such as driving voltage.Analysis shows, based on existing basis material (as aluminium, copper, plastics etc.) and common PZT piezoelectric, through the design of certain geometry, axial driving force and the strain of the matrix obtained-Piezoelectric anisotropy pipe driver can reach 100N and 10 under the effect of 200V driving voltage ^-5magnitude, reaches medium actuating force and strain requirement, can meet all kinds of micro-vibration active vibration isolation system to the demand of piezoelectric drive element.

When specific design matrix-Piezoelectric anisotropy pipe driver, by selecting suitable basis material and designing suitable physical dimension to meet the requirement to driver axial driving force and displacement.

Finite element proof procedure is with reference to as follows:

Below for aluminium and PZT-5 piezoelectric, verify by the validity of Finite Element Method to above-mentioned static drive performance theory deduction formulae discovery result.Table 1 is basis material and performance parameters of piezoelectric materials, and table 2 is matrix-Piezoelectric anisotropy pipe driver geometric parameter.

Table 1 basis material and performance parameters of piezoelectric materials (static calculation)

Table 2 matrix-Piezoelectric anisotropy pipe driver geometric parameter

The driving voltage U be applied in piezo tube 200 is 200V, and now according to the parameters in (7) formula and table 1,2, the actuating force calculated and dependent variable are:

$\left\{\begin{array}{c}{P}_M=\left(\frac{d_{31}}{t}U\right)/(\frac{1}{A_M{E}_M}+\frac{s_{11}^E}{A_P})=123.8\left(N\right)\\ {\mathrm{\&epsiv;}}_M=\left(\frac{d_{31}}{t}U\right)/(1+\frac{s_{11}^E{A}_M}{A_P}{E}_M)=0.912\&times;{10}^{-5}\end{array}\right.$

Utilize ANSYS finite element analysis software, the static drive performance of matrix-Piezoelectric anisotropy pipe driver is analyzed.

In the power-electric coupling field finite element analysis of matrix-Piezoelectric anisotropy pipe driver, the performance parameter of required basis material and piezoelectric is shown in Table 3.

Table 3 basis material and performance parameters of piezoelectric materials (finite element analysis)

Can be found out by analysis result, under piezoelectric element effect, thin-walled basal body pipe 100 is axially producing stretcher strain.

By result of finite element, obtaining the axial maximum displacement Dmax of piezo tube 200 is

DMax＝0.37×10 ^-6(m)

Then piezo tube 200 axial strain amount ε is:

$\mathrm{\&epsiv;}=\frac{\mathrm{DMax}}{L_P}=\frac{0.37\&times;{10}^{-6}\left(m\right)}{0.04\left(m\right)}=0.925\&times;{10}^{-5}$

By relatively finding out, the calculated results and Finite Element Method result of calculation, at the same order of magnitude, effectively can meet the design needs of matrix-Piezoelectric anisotropy pipe driver, thus demonstrate the correctness of this static drive performance theory deduction formula.

Structural design

Various micro-vibration active control system mainly has moderate actuating force and displacement to the performance requirement of piezoelectric actuator, in order to meet above-mentioned requirements; the copper that thin-walled basal body pipe 100 adopts modulus of elasticity less makes, piezo tube 200 makes of common PZT-5.

Table 4 copper and PZT-5 performance parameters of piezoelectric materials

Table 5 copper-Piezoelectric anisotropy pipe driver geometric parameter

Below copper-Piezoelectric anisotropy pipe driver axial displacement and axial driving force are calculated.

(1) axial driving force

When considering that adhered layer 300 affects, the axial driving force P of this copper-Piezoelectric anisotropy pipe driver _mand the functional relation between driving voltage U is provided by (6) formula.According to performance parameter and the physical dimension of the copper in table 4,5 and PZT-5 piezoelectric, get ess-strain transmission efficiency is η simultaneously _ε=0.9, η _q=0.9, then as external drive voltage U=200 (V), the axial driving force P of this copper-Piezoelectric anisotropy pipe driver _mresult of calculation be

$P_M=[d_{31}/[t(\frac{1}{{\mathrm{\&eta;}}_{\mathrm{\&epsiv;}}{A}_M{E}_M}+\frac{s_{11}^E}{{\mathrm{\&eta;}}_Q{A}_P})\left]\right]U=22.354\left(N\right)$

(2) axial displacement

Equally, when considering that adhered layer 300 affects, the axial strain ε of this copper-Piezoelectric anisotropy pipe driver _mand the functional relation between driving voltage U is also provided by (6) formula.According to performance parameter and the physical dimension of the copper in table 4,5 and PZT-5 piezoelectric, get ess-strain transmission efficiency is η simultaneously _ε=0.9, η _q=0.9, then as external drive voltage U=200 (V), the axial strain ε of this copper-Piezoelectric anisotropy pipe driver _mresult of calculation be

${\mathrm{\&epsiv;}}_M=[d_{31}/[t(\frac{1}{{\mathrm{\&eta;}}_{\mathrm{\&epsiv;}}}+\frac{s_{11}^E{A}_M}{{\mathrm{\&eta;}}_Q{A}_P}{E}_M)\left]\right]U=3.252\&times;{10}^{-5}$

That is, the axial displacement Δ L of copper-Piezoelectric anisotropy pipe driver _mfor

ΔL _M＝Nε _ML _P

Wherein, N represents adopted parallel piezoelectric pipe 200 quantity.

Designed copper-Piezoelectric anisotropy pipe driver in 4 piezo tube 200 axially in parallel, then its axial displacement Δ L _mfor

ΔL _M＝4×ε _ML _p＝2.6(μm)

Above-mentioned result of calculation shows, actuating force and the displacement of this copper-Piezoelectric anisotropy pipe driver all reach medium driveability, can meet all kinds of micro-vibration active vibration isolation system to the basic demand of driving element.

The Frequency Response curve of piezoelectric actuator effectively can reflect its dynamic driving performance.To pass through the test to Frequency Response curve below, check its dynamic driving performance, the frequency response curve surveyed as shown in Figure 6,7.The Piezoelectric anisotropy tube drive device provided by the present embodiment compares with the test result analysis of piezoelectric stack driver in prior art (Fig. 8, Fig. 9) control channel frequency response curve, can as drawn a conclusion:

(1) piezoelectric stack driver, copper-Piezoelectric anisotropy pipe driver all have driving effect, and its driving effect strengthens along with the increase of exciting signal frequency;

(2) from amplitude-versus-frequency curve and phase-frequency characteristic curve relatively, piezoelectric stack driver dynamic driving effect is slightly worse than copper-Piezoelectric anisotropy pipe driver, is mainly manifested in low frequency driving performance and phase difference;

(3) from phase-frequency characteristic curve relatively, piezoelectric stack driver phase-frequency characteristic is between 110 to 180 degree, and copper-Piezoelectric anisotropy pipe driver phase-frequency characteristic is positioned between-20 ± 10 degree, and copper-Piezoelectric anisotropy pipe driver has more stable phase-frequency characteristic.

The Piezoelectric anisotropy tube drive device that the utility model embodiment provides, provide a kind of Piezoelectric anisotropy tube drive device (matrix-Piezoelectric anisotropy pipe), can meet all kinds of micro-Active Vibration Control and active vibration isolation system to piezoelectric actuator lightweight, bearing capacity strong, actuating force and the large demand of displacement.

As shown in Figure 1, it is formed primarily of at least one thin-walled basal body pipe 100 and one or more pieces piezo tube 200 basic structure of this Piezoelectric anisotropy tube drive device.Wherein, piezo tube 200 is pasted onto thin-walled basal body pipe 100 skin, internal layer or ectonexine and all pastes, and makes thin-walled basal body pipe 100 produce certain actuating force and displacement by driving this piezo tube 200, thus forms an independently piezoelectric actuator.

This Piezoelectric anisotropy tube drive device have lightweight, structure is simple, easy to make, dynamic driving is effective (amplitude-versus-frequency curve), bearing capacity is strong, actuating force and displacement can the features of flexible design.By selecting different basis materials or the different designs to its geometry, just the various piezoelectric actuator with different driving performance can be obtained, thus meet various micro-Active Vibration Control and active vibration isolation system to the different demands of driving element, there is good versatility.The utility model embodiment provides Piezoelectric anisotropy tube drive device to be not only widely used in all kinds of micro-Active Vibration Control and active vibration isolation system, can also be applied in all kinds of Micro-displacement Driving system, have broad application prospects.

The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace or improvement etc., all should be included within protection range of the present utility model.

Claims (10)

1. a Piezoelectric anisotropy tube drive device, it is characterized in that, comprise driver, basal body pipe, also comprise fixed cover and be located at the madial wall of described basal body pipe or/and lateral wall and for driving described basal body pipe to produce the piezo tube of axial deformation to make described basal body pipe, described piezo tube is electrically connected on described driver by least two strands of wires, and described wire comprises metal guide battery core and is coated on the plastic insulation layer of described metal guide battery core.

2. Piezoelectric anisotropy tube drive device as claimed in claim 1, it is characterized in that, the cross section of described basal body pipe is circular.

3. Piezoelectric anisotropy tube drive device as claimed in claim 1, is characterized in that, described basal body pipe adopts copper, copper alloy, aluminium, aluminium alloy, titanium, titanium alloy or plastic material to make.

4. Piezoelectric anisotropy tube drive device as claimed in claim 1, it is characterized in that, described piezo tube is adhered to the inner side of described basal body pipe or/and outside by sticky object.

5. Piezoelectric anisotropy tube drive device as claimed in claim 1, it is characterized in that, inside described basal body pipe or outside is bonded with at least two described piezo tube, and each described piezo tube is connected in parallel or is connected in series.

6. the Piezoelectric anisotropy tube drive device according to any one of claim 1 to 5, it is characterized in that, described piezo tube comprises at least two sections of arc piezoelectric segments, and each described arc piezoelectric segments is surrounded and formed described piezo tube, and each described arc piezoelectric segments is adhered to the inner side of described basal body pipe or/and outside.

7. Piezoelectric anisotropy tube drive device as claimed in claim 6, it is characterized in that, each described piezo tube comprises four sections of arc piezoelectric segments.

8. Piezoelectric anisotropy tube drive device as claimed in claim 4, it is characterized in that, described sticky object is insulative glue.

9. the Piezoelectric anisotropy tube drive device according to any one of claim 1 to 5, is characterized in that, is provided with concave-convex fit structure between described basal body pipe and described piezo tube.

10. the Piezoelectric anisotropy tube drive device according to any one of claim 1 to 5, is characterized in that, described piezo tube does not protrude from the two ends of described basal body pipe.