CN103869163A - Method for measuring mutual radiation impedance of transducer array in non-anechoic tank and system thereof - Google Patents

Abstract

The invention provides a method for measuring mutual radiation impedance of a transducer array in a non-anechoic tank and a system thereof. the method comprises the following steps: Step 101, resonant frequency of each transducer in the air and resonant frequency of each transducer in water are measured; Step 102, Q distribution points are selected in the non-anechoic tank and are used for distributing a transducer pair to be measured; Step 103, the transducer pair to be measured is distributed on some point in the distribution points, resistance and reactance of a first transducer under various working conditions are obtained when the first transducer and a second transducer operate at same-phase resonant frequency of the first transducer in the air and in water and at reversed-phase frequencies of the first transducer in the air and in water; Step 104, the above Step 103 is repeated until resistance and reactance measurement of the above transducer pair to be measured at all Q distribution points are completed; and Step 105, mutual radiation resistance and mutual radiation impedance of the transducers to be measured at each point are obtained so as to obtain Q mutual radiation resistances and mutual radiation impedances, and mean value of the Q mutual radiation resistances or mutual radiation impedances is calculated to be respectively used as mutual radiation resistance and mutual radiation impedance of the final measurement.

Description

A kind of method and system thereof of measurement transducer array mutual radiation impedance in non-anechoic tank,

Technical field

The present invention proposes a kind of method of measurement transducer array mutual radiation impedance in non-anechoic tank,, its objective is in the measurement that is applied to transducer array parameter, in the situation that there is reflective sound wave, measure the mutual radiation impedance between each transducer in array.The present invention has also provided the system of measurement transducer array mutual radiation impedance in non-anechoic tank.

Background technology

The measurement of desirable transducer array mutual radiation impedance should be carried out in free field, and in general, on lake and sea waits the environment of field trial to approach very much free field.But because the preliminary work of field trial is loaded down with trivial details, field condition complexity, performance difficulty, test period is long, expense is high.Transducer array mutual radiation impedance value is the key factor that affects transducer array performance, need in the R&D process of array, will measure, if and such measurement is carried out in outfield, its cost is too high, thereby under prior art condition, the measurement of transducer array mutual radiation impedance completes conventionally in pond.

Anechoic tank, can provide the environment that is similar to free field, but for the not transducer array within noise elimination scope of those frequency of operation, anechoic tank, still cannot provide satisfied measurement environment, and anechoic tank, in this case deteriorates to a common non-anechoic tank.In addition, anechoic tank, cost is very high, is not that all underwater sound research institutions all have the ability to bear, and what they used mostly is non-anechoic tank.Therefore the measurement that, how research can carry out transducer array mutual radiation impedance in non-anechoic tank, is necessary.

Summary of the invention

The object of the invention is to, for overcoming the problems referred to above, the invention provides the method and system of a kind of measurement transducer array mutual radiation impedance.

To achieve these goals, the invention provides the method for a kind of measurement transducer array mutual radiation impedance, the method can be in non-anechoic tank,, the right mutual radiation impedance parameters of transducer of two transducer compositions in measurement performance and the similar piezoelectric ceramic transducer array of parameter in water tank or in sound suppressor pond, and described method comprises:

Step 101) measure the aerial resonance frequency f of each transducer _a, transducer static susceptance value B ₀with the resonance frequency f in water _w;

Step 102) in non-sound suppressor pond, in water tank or in anechoic tank,, select Q to lay a little, for laying transducer pair to be measured;

Step 103) by transducer to be measured to being laid on above-mentioned certain point in laying a little, the first transducer of transducer centering to be measured and the second transducer during with resonance frequency homophase in the first transducer air resonance frequency and water and anti-phase work, are obtained to resistance and the reactance of the first transducer under various working conditions;

Step 104) repetition above-mentioned steps 103) until complete above-mentioned transducer centering the first transducer to be measured in individual resistance and the reactance measurement that lays a place of all Q;

Step 105) according to transducer to be measured to the transducer to be measured of the resistance calculations at premises place to the mutual radiation resistance when the each point, obtain altogether Q radiation resistance mutually; And according to the static susceptance value of any one transducer of transducer to be measured to the reactance at premises place and transducer centering to be measured, calculate transducer to be measured anti-to mutual radiation when the each point, radiation is anti-mutually to obtain altogether Q;

The average of calculating Q mutual radiation resistance is the right mutual radiation resistance of transducer to be measured measuring, and the average of calculating Q mutual radiation impedance is that the right mutual radiation of transducer to be measured measuring resists, and completes the measurement of the right mutual radiation impedance of transducer.

Above-mentioned steps 101) further comprise:

Step 101-1) obtain the mechanical admittance curves figure in the aerial mechanical admittance curves figure of each transducer and water in transducer array;

Step 101-2) from airborne mechanical admittance curves figure, obtain airborne resonance frequency f _αstatic susceptance value B with transducer ₀, and obtain the resonance frequency f in water in mechanical admittance curves figure from water _w, wherein from mechanical admittance curves figure, read resonant frequency method and be: search the maximum of points of electric lead curve, its corresponding frequency is exactly resonance frequency f _r, if airborne mechanical admittance curves figure, f _rfor airborne resonance frequency f _a; If the mechanical admittance curves figure in water, f _rfor the resonance frequency f in water intaking _w.

Above-mentioned steps 102) further comprise:

In non-anechoic tank,, Q of random selection lays a little;

Or

Select any transducer k in array, calculate the wavelength of its radiative acoustic wave in water, for:

$\mathrm{\λ}=\frac{c_0}{f_w^{\left(k\right)}}$

Wherein, c ₀for the speed of underwater acoustic wave;

In non-anechoic tank,, specify the cube region of a λ × λ × λ, on this cube face and in interior zone, evenly get Q=M ³position is as laying a little, wherein M>=4.

Above-mentioned steps 103) specifically comprise:

To be positioned under the condition of the first transducer u on laying a little and the second transducer v work resistance and reactance according to following method measurement transducer the first transducer u:

A) producing frequency is

signal, be carried in the first transducer u and the second transducer v upper, measure the resistance of the first transducer u

and reactance

B) producing frequency is

signal, be carried in the first transducer u upper, and by 180 ° of the phase changes of this signal, be carried in the second transducer v upper, measure the resistance of the first transducer u

and reactance

C) producing frequency is

signal, be carried in the first transducer u and the second transducer v upper, measure the resistance of the first transducer u

and reactance

D) producing frequency is

signal, be carried in the first transducer u upper, by 180 ° of the phase changes of this signal, be carried in the second transducer v upper, measure the resistance of the first transducer u

and reactance

Wherein,

represent the resonance frequency of the first transducer u in water,

represent the aerial resonance frequency of the first transducer u.

Above-mentioned steps 105) adopt following formula to calculate mutual radiation resistance between the first transducer and the second transducer and radiation is anti-mutually:

Transducer to be measured is at the mutual radiation resistance of each point:

$r_{u,v}^{\left(q\right)}=\frac{R_{u.,v}^{(q,I)}\·\{{\left[R_{u,v}^{(q,\mathrm{II})}\right]}^2+{\left[X_{u,v}^{(q,\mathrm{II})}\right]}^2\}-R_{u,v}^{(q,\mathrm{II})}\·{\left\{\right[R_{u,v}^{(q,I)}]}^2+{\left[X_{u,v}^{(q,I)}\right]}^2\}}{2R_{u,v}^{(q,I)}{R}_{u,v}^{(q,\mathrm{II})}}$

Transducer to be measured is anti-in the mutual radiation of each point:

$x_{u,v}^{\left(q\right)}=\frac{1}{2}\{\frac{X_{u,v}^{(q,\mathrm{III})}[1+B_0^{\left(u\right)}{X}_{u,v}^{(q,\mathrm{III})}]+B_0^{\left(u\right)}{\left[R_{u,v}^{(q,\mathrm{III})}\right]}^2}{{[1+B_0^{\left(u\right)}{X}_{u,v}^{(q,\mathrm{III})}]}^2+{\left[B_0^{\left(u\right)}{R}_{u,v}^{(q,\mathrm{III})}\right]}^2}-\frac{X_{u,v}^{(q,\mathrm{IV})}[1+B_0^{\left(u\right)}{X}_{u,v}^{(q,\mathrm{IV})}]+B_0^{\left(u\right)}{\left[R_{u,v}^{(q,\mathrm{IV})}\right]}^2}{{[1+B_0^{\left(u\right)}{X}_{u,v}^{(q,\mathrm{IV})}]}^2+{\left[B_0^{\left(u\right)}{R}_{u,v}^{(q,\mathrm{IV})}\right]}^2}\}$

The final measurement mutual radiation resistance of transducer to be measured to correspondence:

$r_{u,v}=\frac{1}{Q}\underset{q=1}{\overset{Q}{\mathrm{\Σ}}}{r}_{u,v}^{\left(q\right)}$

Transducer to be measured is anti-to the mutual radiation of final measurement of correspondence:

$x_{u,v}=\frac{1}{Q}\underset{q=1}{\overset{Q}{\mathrm{\Σ}}}{x}_{u,v}^{\left(q\right)}$

Wherein,

represent the static susceptance value of the first transducer u, what Q represented to arrange lays quantity a little, and any one during to be that Q is individual lay a little of q lays a little,

be the mutual radiation resistance of the first transducer u,

the mutual radiation that is the first transducer u is anti-.

The system of a kind of measurement transducer array mutual radiation impedance is also provided based on said method the present invention, this system can be in non-anechoic tank, the right mutual radiation impedance parameters of transducer of two transducer compositions in measurement performance and the similar piezoelectric ceramic transducer array of parameter, described system comprises: transducer static parameter measurement mechanism, transducer array mutual radiation impedance measurement mechanism, treating apparatus and laying arranges and a mobile device;

Described transducer static parameter measurement mechanism, for measuring the aerial resonance frequency f of each transducer _a, transducer static susceptance value B ₀and resonance frequency f in water _w, and the frequency in each parameter input mutual radiation impedance measurement mechanism setting signal source that side is obtained;

The signal of signal source output given two branch roads by described transducer array mutual radiation impedance measurement mechanism, and wherein the first branch road comprises and is connected in series successively: the first power amplifier, power analyzer and the first transducer array element; The second branch road comprises successively and is connected in series: phase shifter, the second power amplifier and the second transducer; And the first power amplifier is connected with signal source output terminal respectively with phase shifter, and described the first transducer and the second transducer are transducer pair to be measured; Described signal source is for generating respectively the aerial resonance frequency f of the first transducer _αand resonance frequency f in water _w; Described power analyzer is for measuring resistance and the reactance of the first transducer under the first power amplifier driving;

The resistance that described treating apparatus measures according to transducer array mutual radiation impedance measurement mechanism and reactance calculate the mutual radiation resistance of the right measurement of transducer to be measured and measure mutual radiation and resist;

Described some setting and the mobile device of laying, lay a placement transducer pair to be measured, and mobile transducer to be measured is to the position laying a little for setting Q.

Above-mentioned transducer static parameter measurement mechanism tool adopts between electric impedance analyzer and the first transducer and is connected by signal wire, obtains the aerial resonance frequency f of the first transducer _a, transducer static susceptance value B ₀with the resonance frequency f in water _w.

Above-mentioned treating apparatus further comprises:

Storage unit, the resistance and the reactance that in the time that difference lays, obtain for the first transducer array element of depositing transducer array element to be measured;

First processes storage unit, calculates transducer to be measured mutual radiation resistance on respectively laying a little and mutual radiation are resisted and stored for the resistance according to cell stores and reactance;

The second processing unit, for the mutual radiation resistance according to the each point of the first processing unit storage and radiation is anti-mutually obtains the mutual radiation resistance of measurement that transducer array element to be measured is right and measure mutual radiation resisting.

Setting and the mobile device of laying described above:

Lay a setting unit, for selecting Q point to lay position a little;

Mobile detecting unit, for detection of completing transducer to be measured to lay resistance and reactance measurement a little at certain;

Mobile unit, lays measurement a little and completes time shift transducer moving to be measured all the other that lay a little to Q are laid a little when mobile detecting unit connects side to certain.

Above-mentioned the second processing unit adopts following formula to calculate mutual radiation resistance to be measured and measures mutual radiation and resists:

Measure mutual radiation resistance:

$r_{u,v}=\frac{1}{Q}\underset{q=1}{\overset{Q}{\mathrm{\Σ}}}{r}_{u,v}^{\left(q\right)}$

Measure mutual radiation anti-:

$x_{u,v}=\frac{1}{Q}\underset{q=1}{\overset{Q}{\mathrm{\Σ}}}{x}_{u,v}^{\left(q\right)}$

Wherein, Q is the quantity laying a little, and q is that any one during Q lays a little lays a little,

be the mutual radiation resistance of the first transducer u,

the mutual radiation that is the first transducer u is anti-.

Compared with prior art, technical advantage of the present invention is:

Technical scheme provided by the invention can substitute outfield experiments or anechoic tank, experiment, in non-free found field, measure the mutual radiation impedance of transducer array, effectively solved while adopting prior art and need to carry out outfield experiments or need to use the high anechoic tank, of cost.

Brief description of the drawings

Fig. 1 is that the present invention measures the aerial static parameter measurement mechanism of each transducer schematic diagram;

Fig. 2 is that the present invention measures the static parameter measurement mechanism schematic diagram of each transducer in water;

Fig. 3 is transducer array mutual radiation impedance measurement mechanism composition frame chart provided by the invention;

Fig. 4 is the mechanical admittance curves figure of certain transducer in the transducer array measuring;

Fig. 5 is the process flow diagram of the method for measurement transducer array provided by the invention mutual radiation impedance.

Embodiment

Below in conjunction with drawings and Examples, the present invention is further described.

The object of the invention is to propose a kind of method and system thereof of measurement transducer array mutual radiation impedance in non-anechoic tank.

The present invention is directed to the problem that in non-anechoic tank,, reflective sound wave impact is measured, proposed a kind of transducer array mutual radiation impedance measuring method.Method of the present invention is applied to the parameter measurement of carrying out transducer array in pond.

Transducer array mutual radiation impedance measuring method of the present invention is applicable to the similar piezoelectric ceramic transducer array of performances and parameters, and its technical scheme is:

For an array being formed by N transducer, resonance frequency in the aerial resonance frequency of each transducer 1 and water and static capacitance value record by electric impedance analyzer (2), transducer u(3) and transducer v(4) (u, v=1,2,3, N, the mutual radiation impedance of u < between is v) by signal source (5), power amplifier 1(6), phase shifter (7), power amplifier 2(8) and power analyzer (9) in non-anechoic tank, (9), realize measurement, comprise the steps:

Step 1, use electric impedance analyzer (2) carry out impedance measurement to each transducer (1) respectively in air He in water, obtain the mechanical admittance curves figure in airborne mechanical admittance curves figure and water.

Step 2, from airborne mechanical admittance curves figure, obtain airborne resonance frequency f _αstatic susceptance value B with transducer ₀, in the mechanical admittance curves figure from water, obtain the resonance frequency f in water _w.

Mechanical admittance curves figure as shown in Figure 4, therefrom reads resonant frequency method and is: search the maximum of points of electric lead curve, its corresponding frequency is exactly resonance frequency f _r.If airborne mechanical admittance curves figure, f _rfor airborne resonance frequency f _a; If the mechanical admittance curves figure in water, f _rfor the resonance frequency f in water intaking _w.

From airborne mechanical admittance curves figure, obtain the static susceptance value of transducer: in aerial mechanical admittance curves figure, read f _athe value B of place's susceptance curve ₀.

For i transducer in array (i=1,2,3 ..., N), its airborne resonance frequency is designated as

resonance frequency in water is designated as

static susceptance value is designated as

Step 3, design transducer array lay a position.Laying a little regioselective principle is: select one group of more laying a little of number, lay while locating work when transducer array is listed in difference, the impact of reflective sound wave pair array performance is different.Can be used but not limited to following scheme:

Scheme one, select Q to lay point (Q >=60) at random in non-anechoic tank.

Scheme two, select any transducer k in array, calculate the wavelength of its radiative acoustic wave in water, for:

$\mathrm{\&lambda;}=\frac{c_0}{f_w^{\left(k\right)}}$

Wherein, c ₀for the speed of underwater acoustic wave.In non-anechoic tank,, specify the cube region of a λ × λ × λ, on this cube face and in interior zone, evenly get Q=M ³position (M>=4) is as laying a little.

Step 4, on all Q lay a little, by following method, transducer array is measured:

1. the modes of emplacement, by transducer array during according to its work lays, array center be q lay point (q=1,2,3 ..., Q).

2., specify two transducers---transducer u(3) and transducer v(4) (u, v=1,2,3 ... N, u < v), power amplifier 1(6) connect transducer u(3), power amplifier 2(8) connect transducer v(4), power amplifier 1(6) and power amplifier 2(8) enlargement factor equates, and except transducer u(3) and transducer v(4) in array other each transducers all do not work.In following four kinds of situations, use power analyzer (9) measurement transducer u(3) impedance:

Situation I, signal source (5) produce frequency and are

signal, phase shifter (7) does not change signal phase, utilizes power analyzer (9) to measure transducer u(3) resistance

and reactance

(u, v represents two transducers, q represents to lay a little, I represents different signal parameter facilities, lower same).

Situation II, signal source (5) produce frequency and are

signal, phase shifter (7) changes 180 ° of signal phases, utilizes power analyzer (9) to measure transducer u(3) resistance

and reactance

Situation III, signal source (5) produce frequency and are

signal, phase shifter (7) does not change signal phase, utilizes power analyzer (9) to measure transducer u(3) resistance

and reactance

Situation IV, signal source (5) produce frequency and are

signal, phase shifter (7) changes 180 ° of signal phases, utilizes power analyzer (9) to measure transducer u(3) resistance and reactance

3., on each lays a little, according to 2. measuring all transducers to combination.

4., according to 1.-3. measure all situations about laying a little.

Step 5, calculate each and lay a little each to the interaction between transducer.Radiation resistance is mutually:

$r_{u,v}^{\left(q\right)}=\frac{R_{u.,v}^{(q,I)}\&CenterDot;\{{\left[R_{u,v}^{(q,\mathrm{II})}\right]}^2+{\left[X_{u,v}^{(q,\mathrm{II})}\right]}^2\}-R_{u,v}^{(q,\mathrm{II})}\&CenterDot;{\left\{\right[R_{u,v}^{(q,I)}]}^2+{\left[X_{u,v}^{(q,I)}\right]}^2\}}{2R_{u,v}^{(q,I)}{R}_{u,v}^{(q,\mathrm{II})}}$

Mutual radiation resists:

$x_{u,v}^{\left(q\right)}=\frac{1}{2}\{\frac{X_{u,v}^{(q,\mathrm{III})}[1+B_0^{\left(u\right)}{X}_{u,v}^{(q,\mathrm{III})}]+B_0^{\left(u\right)}{\left[R_{u,v}^{(q,\mathrm{III})}\right]}^2}{{[1+B_0^{\left(u\right)}{X}_{u,v}^{(q,\mathrm{III})}]}^2+{\left[B_0^{\left(u\right)}{R}_{u,v}^{(q,\mathrm{III})}\right]}^2}-\frac{X_{u,v}^{(q,\mathrm{IV})}[1+B_0^{\left(u\right)}{X}_{u,v}^{(q,\mathrm{IV})}]+B_0^{\left(u\right)}{\left[R_{u,v}^{(q,\mathrm{IV})}\right]}^2}{{[1+B_0^{\left(u\right)}{X}_{u,v}^{(q,\mathrm{IV})}]}^2+{\left[B_0^{\left(u\right)}{R}_{u,v}^{(q,\mathrm{IV})}\right]}^2}\}$

Wherein, u, v=1,2,3 ..., N, u < v, q=1,2,3 ..., Q.

Step 6, calculate each to the mutual radiation resistance between transducer:

$r_{u,v}=\frac{1}{Q}\underset{q=1}{\overset{Q}{\mathrm{\&Sigma;}}}{r}_{u,v}^{\left(q\right)}$

Radiation is anti-mutually:

$x_{u,v}=\frac{1}{Q}\underset{q=1}{\overset{Q}{\mathrm{\&Sigma;}}}{x}_{u,v}^{\left(q\right)}$

Wherein, u, v=1,2,3 ..., N, u < v.

R _u,vand x _u,vbe transducer u(3) and transducer v(4) between mutual radiation resistance and mutually radiation anti-(u, v=1,2,3 ..., N, u < is v).

The system that the method for above-mentioned measurement transducer array mutual radiation impedance in non-anechoic tank, adopts is transducer array mutual radiation impedance measuring system in non-anechoic tank.This system comprises: transducer static parameter measure portion and transducer array mutual radiation impedance measure portion.

Transducer static parameter measure portion comprises electric impedance analyzer (2), and is connected by signal wire between parameter transducer (1) to be measured.

Transducer array mutual radiation impedance measure portion comprises signal source (5), power amplifier 1(6), phase shifter (7), power amplifier 2(8) and power analyzer (9).The output port of signal source (5) is by signal wire and power amplifier 1(6) input port be connected with the input port of phase shifter (7); Power amplifier 1(6) output port by signal wire and transducer u(3) be connected, middle access power analyzer (9); The output port of phase shifter (7) is by signal wire and power amplifier 2(8) input port be connected; Power amplifier 2(8) output port by signal wire and transducer v(4) be connected.

Electric impedance analyzer (2) can the mechanical admittance curves of measurement transducer within the scope of certain frequency, for the impedance operator of measurement transducer.

Signal source (5) is for generating the signal of assigned frequency.

Phase shifter (7) is for according to the requirement of measuring method, do not change or reverse signal source (5) generate the phase place of signal.

Power amplifier 1(6) and power amplifier 2(8) for amplifying signal.

Power analyzer (9) is for measuring power amplifier 1(6) drive under transducer u(3) resistance and reactance.

In a word, the method for a kind of measurement transducer array mutual radiation impedance in non-anechoic tank, of the present invention is: in array, the resonance frequency of each transducer and static susceptance value are measured by electric impedance analyzer; In array each to transducer the mutual radiation impedance in resonance frequency measured by signal source, power amplifier 1, phase shifter, power amplifier 2 and power analyzer.In non-anechoic tank, of the present invention, transducer array mutual radiation impedance measuring system comprises signal source, power amplifier 1, phase shifter, power amplifier 2 and power analyzer, signal source is connected with phase shifter with power amplifier 1 by signal wire, phase shifter is connected with power amplifier 2 by signal wire, power amplifier 1 is connected by signal wire transducer to be measured respectively with power amplifier 2, access power analyser between power amplifier 1 and corresponding transducer.

It is to be noted, the foregoing is only the preferred embodiment of the present invention in the high speed transmission technology implementation method of polycaryon processor access data of magnetic disk array, not be used for limiting practical range of the present invention, the technician with professional knowledge base can realize the present invention by above embodiment, therefore every according to any variation of making within the spirit and principles in the present invention, amendment and improvement, all covered by the scope of the claims of the present invention.

Claims (10)

1. the method for measurement transducer array mutual radiation impedance, the method can be in non-anechoic tank,, the right mutual radiation impedance parameters of transducer of two transducer compositions in measurement performance and the similar piezoelectric ceramic transducer array of parameter in water tank or in sound suppressor pond, and described method comprises:

Step 101) measure the aerial resonance frequency f of each transducer _a, transducer static susceptance value B ₀with the resonance frequency f in water _w;

Step 102) in non-sound suppressor pond, in water tank or in anechoic tank,, select Q to lay a little, for laying transducer pair to be measured;

Step 103) by transducer to be measured to being laid on above-mentioned certain point in laying a little, the first transducer of transducer centering to be measured and the second transducer during with resonance frequency homophase in the first transducer air resonance frequency and water and anti-phase work, are obtained to resistance and the reactance of the first transducer under various working conditions;

Step 104) repeat above-mentioned steps 103) until the first transducer that completes above-mentioned transducer centering to be measured all Q resistance and the reactance measurements that lay a place;

Step 105) according to transducer to be measured to the transducer to be measured of the resistance calculations at premises place to the mutual radiation resistance when the each point, obtain altogether Q radiation resistance mutually; And according to the static susceptance value of any one transducer of transducer to be measured to the reactance at premises place and transducer centering to be measured, calculate transducer to be measured anti-to mutual radiation when the each point, radiation is anti-mutually to obtain altogether Q;

The average of calculating Q mutual radiation resistance is the right mutual radiation resistance of transducer to be measured measuring, and the average of calculating Q mutual radiation impedance is that the right mutual radiation of transducer to be measured measuring resists, and completes the measurement of the right mutual radiation impedance of transducer.

2. the method for measurement transducer array according to claim 1 mutual radiation impedance, is characterized in that, described step 101) further comprise:

Step 101-1) obtain the mechanical admittance curves figure in the aerial mechanical admittance curves figure of each transducer and water in transducer array;

Step 101-2) from airborne mechanical admittance curves figure, obtain airborne resonance frequency f _αstatic susceptance value B with transducer ₀, and obtain the resonance frequency f in water in mechanical admittance curves figure from water _w, wherein from mechanical admittance curves figure, read resonant frequency method and be: search the maximum of points of electric lead curve, its corresponding frequency is exactly resonance frequency f _r, if airborne mechanical admittance curves figure, f _rfor airborne resonance frequency f _a; If the mechanical admittance curves figure in water, f _rfor the resonance frequency f in water intaking _w.

3. the method for measurement transducer array according to claim 1 mutual radiation impedance, is characterized in that, described step 102) further comprise:

In non-anechoic tank,, Q of random selection lays a little;

Or

Select any transducer k in array, calculate the wavelength of its radiative acoustic wave in water, for:

$\mathrm{\&lambda;}=\frac{c_0}{f_w^{\left(k\right)}}$

Wherein, c ₀for the speed of underwater acoustic wave;

In non-anechoic tank,, specify the cube region of a λ × λ × λ, on this cube face and in interior zone, evenly get Q=M ³position is as laying a little, wherein M>=4.

4. the method for measurement transducer array according to claim 1 mutual radiation impedance, is characterized in that, described step 103) specifically comprise:

To be positioned under the condition of the first transducer u on laying a little and the second transducer v work resistance and reactance according to following method measurement transducer the first transducer u:

A) producing frequency is signal, be carried in the first transducer u and the second transducer v upper, measure the resistance of the first transducer u

and reactance

B) producing frequency is signal, be carried in the first transducer u upper, and by 180 ° of the phase changes of this signal, be carried in the second transducer v upper, measure the resistance of the first transducer u

and reactance

C) producing frequency is signal, be carried in the first transducer u and the second transducer v upper, measure the resistance of the first transducer u

and reactance

D) producing frequency is

signal, be carried in the first transducer u upper, by 180 ° of the phase changes of this signal, be carried in the second transducer v upper, measure the resistance of the first transducer u

and reactance

Wherein,

represent the resonance frequency of the first transducer u in water,

represent the aerial resonance frequency of the first transducer u.

5. the method for measurement transducer array according to claim 1 mutual radiation impedance, is characterized in that, described step 105) adopt following formula to calculate mutual radiation resistance between the first transducer and the second transducer and radiation is anti-mutually:

Transducer to be measured is at the mutual radiation resistance of each point:

$r_{u,v}^{\left(q\right)}=\frac{R_{u.,v}^{(q,I)}\&CenterDot;\{{\left[R_{u,v}^{(q,\mathrm{II})}\right]}^2+{\left[X_{u,v}^{(q,\mathrm{II})}\right]}^2\}-R_{u,v}^{(q,\mathrm{II})}\&CenterDot;{\left\{\right[R_{u,v}^{(q,I)}]}^2+{\left[X_{u,v}^{(q,I)}\right]}^2\}}{2R_{u,v}^{(q,I)}{R}_{u,v}^{(q,\mathrm{II})}}$

Transducer to be measured is anti-in the mutual radiation of each point:

$x_{u,v}^{\left(q\right)}=\frac{1}{2}\{\frac{X_{u,v}^{(q,\mathrm{III})}[1+B_0^{\left(u\right)}{X}_{u,v}^{(q,\mathrm{III})}]+B_0^{\left(u\right)}{\left[R_{u,v}^{(q,\mathrm{III})}\right]}^2}{{[1+B_0^{\left(u\right)}{X}_{u,v}^{(q,\mathrm{III})}]}^2+{\left[B_0^{\left(u\right)}{R}_{u,v}^{(q,\mathrm{III})}\right]}^2}-\frac{X_{u,v}^{(q,\mathrm{IV})}[1+B_0^{\left(u\right)}{X}_{u,v}^{(q,\mathrm{IV})}]+B_0^{\left(u\right)}{\left[R_{u,v}^{(q,\mathrm{IV})}\right]}^2}{{[1+B_0^{\left(u\right)}{X}_{u,v}^{(q,\mathrm{IV})}]}^2+{\left[B_0^{\left(u\right)}{R}_{u,v}^{(q,\mathrm{IV})}\right]}^2}\}$

The final measurement mutual radiation resistance of transducer to be measured to correspondence:

$r_{u,v}=\frac{1}{Q}\underset{q=1}{\overset{Q}{\mathrm{\&Sigma;}}}{r}_{u,v}^{\left(q\right)}$

Transducer to be measured is anti-to the mutual radiation of final measurement of correspondence:

$x_{u,v}=\frac{1}{Q}\underset{q=1}{\overset{Q}{\mathrm{\&Sigma;}}}{x}_{u,v}^{\left(q\right)}$

Wherein,

represent the static susceptance value of the first transducer u, what Q represented to arrange lays quantity a little, and any one during to be that Q is individual lay a little of q lays a little, be the mutual radiation resistance of the first transducer u,

the mutual radiation that is the first transducer u is anti-.

6. the system of measurement transducer array mutual radiation impedance, this system can be in non-anechoic tank, the right mutual radiation impedance parameters of transducer of two transducer compositions in measurement performance and the similar piezoelectric ceramic transducer array of parameter, described system comprises: transducer static parameter measurement mechanism, transducer array mutual radiation impedance measurement mechanism, treating apparatus and laying arranges and a mobile device;

Described transducer static parameter measurement mechanism, for measuring the aerial resonance frequency f of each transducer _a, transducer static susceptance value B ₀and resonance frequency f in water _w, and the frequency in each parameter input mutual radiation impedance measurement mechanism setting signal source that side is obtained;

The signal of signal source output given two branch roads by described transducer array mutual radiation impedance measurement mechanism, and wherein the first branch road comprises and is connected in series successively: the first power amplifier, power analyzer and the first transducer array element; The second branch road comprises successively and is connected in series: phase shifter, the second power amplifier and the second transducer; And the first power amplifier is connected with signal source output terminal respectively with phase shifter, and described the first transducer and the second transducer are transducer pair to be measured; Described signal source is for generating respectively the aerial resonance frequency f of the first transducer _aand resonance frequency f in water _w; Described power analyzer is for measuring resistance and the reactance of the first transducer under the first power amplifier driving;

The resistance that described treating apparatus measures according to transducer array mutual radiation impedance measurement mechanism and reactance calculate the mutual radiation resistance of the right measurement of transducer to be measured and measure mutual radiation and resist;

Described some setting and the mobile device of laying, lay a placement transducer pair to be measured, and mobile transducer to be measured is to the position laying a little for setting Q.

7. the system of measurement transducer array according to claim 6 mutual radiation impedance, it is characterized in that, described transducer static parameter measurement mechanism tool adopts between electric impedance analyzer and the first transducer and is connected by signal wire, obtains the aerial resonance frequency f of the first transducer _a, transducer static susceptance value B ₀with the resonance frequency f in water _w.

8. the system of measurement transducer array according to claim 6 mutual radiation impedance, is characterized in that, described treating apparatus further comprises:

Storage unit, the resistance and the reactance that in the time that difference lays, obtain for the first transducer array element of depositing transducer array element to be measured;

First processes storage unit, calculates transducer to be measured mutual radiation resistance on respectively laying a little and mutual radiation are resisted and stored for the resistance according to cell stores and reactance;

The second processing unit, for the mutual radiation resistance according to the each point of the first processing unit storage and radiation is anti-mutually obtains the mutual radiation resistance of measurement that transducer array element to be measured is right and measure mutual radiation resisting.

9. the system of measurement transducer array according to claim 8 mutual radiation impedance, is characterized in that, described some setting and the mobile device of laying:

Lay a setting unit, for selecting Q point to lay position a little;

Mobile detecting unit, for detection of completing transducer to be measured to lay resistance and reactance measurement a little at certain;

Mobile unit, lays measurement a little and completes time shift transducer moving to be measured all the other that lay a little to Q are laid a little when mobile detecting unit connects side to certain.

10. the system of measurement transducer array according to claim 8 mutual radiation impedance, is characterized in that, described the second processing unit adopts following formula to calculate mutual radiation resistance to be measured and measures mutual radiation and resists:

Measure mutual radiation resistance:

$r_{u,v}=\frac{1}{Q}\underset{q=1}{\overset{Q}{\mathrm{\&Sigma;}}}{r}_{u,v}^{\left(q\right)}$

Measure mutual radiation anti-:

$x_{u,v}=\frac{1}{Q}\underset{q=1}{\overset{Q}{\mathrm{\&Sigma;}}}{x}_{u,v}^{\left(q\right)}$

Wherein, Q is the quantity laying a little, and q is that any one during Q lays a little lays a little, be the mutual radiation resistance of the first transducer u,

the mutual radiation that is the first transducer u is anti-.

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