CN103823135B - A kind of multifrequency high-speed sensibility that is used for tests intermediate-frequeney point amplitude adjustment method - Google Patents

Abstract

The invention discloses a kind of for multifrequency high-speed sensibility test intermediate-frequeney point amplitude adjustment method, belong to technical field of electromagnetic compatibility measurement.First described method of adjustment obtains detecting information, establishing target matrix; Then set single frequency point signal amplitude, obtain test data; Carry out the process of " getting pulverised " of matrix operation and double level again; Finally carry out degree reduction matrix first trip dimension to judge and amplitude delta feedback; Until the degree reduction matrix dimension obtained after the adjustment of certain amplitude is 0, then complete bin magnitudes adjustment in this test group.Be employed herein matrix operation, the adjustment of multifrequency high-speed sensibility test intermediate-frequeney point amplitude will take into account output power value and the hole coupling current value of each frequency, and matrix operation brings great convenience to data processing.The result matrix of differences of the present invention to matrix operation has carried out double level process of " getting pulverised ", has both met the demand of conducted susceptibility closed loop test, and has brought great convenience to again the adjustment of amplitude.

Description

A kind of multifrequency high-speed sensibility that is used for tests intermediate-frequeney point amplitude adjustment method

Technical field

The invention belongs to technical field of electromagnetic compatibility measurement, relate to a kind of in the test of multifrequency high-speed sensibility, to the method for adjustment of frequency group intermediate-frequeney point amplitude.

Background technology

According to regulation in GJB151A " military equipment and subsystem Electromagnetic Launching and susceptibility require ", GJB152A " military equipment and subsystem Electromagnetic Launching and susceptibility test ", conducted susceptibility test is applicable to be arranged in all kinds of platform or device, on platform or device and the equipment launched of platform or device and subsystem, be applicable to all interconnected cable of equipment or subsystem, comprise feed cable.

The test layouts of multifrequency high-speed sensibility test is as accompanying drawing 1, and testing process is as accompanying drawing 2.In general's mark, the test frequency of the conducted susceptibility test of regulation carries out rationally effective grouping, and signal source single output packet, containing the composite signal of grouping test frequency, is injected test specimen and tested, observation sensitivity phenomenon.This kind of quick test mode of multifrequency, while all test single-frequency points of covering, testing time greatly reduces, and the test duration shortens greatly, and testing efficiency improves greatly.When with composite signal test, when test specimen occurs responsive, then carry out single-frequency point repetition measurement according to sensitive frequency group, finally determine sensitive frequency.

Susceptibility test belongs to closed loop test, comprise that test signal exports, bin magnitudes adjustment, data monitoring and feedback, resident test, these links of sensitivity phenomenon inspecting and recording.The test of multifrequency high-speed sensibility needs to monitor the composite signal comprising multiple frequency, feed back and adjustment, need to make frequency contained by composite signal reach each self calibration power or respective frequency couple current ultimate value simultaneously, its complexity and time loss are much higher than single-frequency point test, even can offset because testing time reduces the test duration reduction brought.Therefore how can carry out data monitoring fast, accurately, obtaining the amplitude adjustment amount of composite signal each test frequency contained, reduce adjustment number of times, is the key that multifrequency high-speed sensibility method of testing improves testing efficiency.

Summary of the invention

The object of the invention is to propose one for multifrequency high-speed sensibility test intermediate-frequeney point amplitude adjustment method.

Adopt the method such as matrix operation, matrix reduction in the present invention, achieve each bin magnitudes in test frequency group quick, accurately adjust, concrete set-up procedure is as follows:

Step one: obtain detecting information, establishing target matrix;

From detecting information, obtain conducted susceptibility and test the target limit value electric current I (dB μ A) chosen, current limit value tolerance ± Δ I(dB μ A); The calibration performance number P of each test frequency ₁... P _m(dBm) (M represents the total frequency number of test), performance number tolerance ± Δ P(dBm); Grouping information m, n (m represents packet count, and n represents frequency number in each test group).

Build the objective matrix OB of each test group _i,

${\mathrm{OB}}_i=\left[\begin{array}{c}{P}_{\mathrm{ij}}\\ I\end{array}\right],$

Wherein, i=1 ~ m is test group # variable, and j=1 ~ n is each test group build-in test frequency number variable.

Step 2: setting single frequency point signal amplitude, obtains test data;

For the test of each grouping, $A_i^k=\left[A_{\mathrm{ij}}^k\right]=[A_{i1}^k,A_{i2}^k,...,A_{\mathrm{in}}^k],$ After representing kth time amplitude adjustment, the signal source output amplitude setting value of n frequency in i-th group, couple current value on the cable that after amplitude of testing subsequently adjusts, in test group, single-frequency point is corresponding and the output power of power amplifier, after kth time amplitude adjustment, obtain amplitude measurement value matrix $T_i^k=\left[\begin{array}{ccc}{P}_{i1}^k& ......& P_{\mathrm{in}}^k\\ I_{i1}^k& ......& I_{\mathrm{in}}^k\end{array}\right].$ Wherein, ..., after representing kth time amplitude adjustment, the output power of 1 ~ n test frequency in the i-th test group; ..., after representing kth time amplitude adjustment, the couple current value of 1 ~ n test frequency in the i-th test group.

In group, single frequency point signal amplitude initial value is (A is a less definite value, will as the amplitude output valve after i-th group of the 0th amplitude adjustment.

Step 3: process that matrix operation and double level " get pulverised ";

By amplitude measurement value matrix with objective matrix OB _icarry out matrix operation, obtain the matrix of differences of k amplitude adjusted amplitude measured value matrix and objective matrix

$\mathrm{\Δ}{T}_i^k={\mathrm{OB}}_i-T_i^k=\left[\begin{array}{ccc}{P}_{i1}& ......& P_{\mathrm{in}}\\ I& ......& I\end{array}\right]-\left[\begin{array}{ccc}{P}_{i1}^k& ......& P_{\mathrm{in}}^k\\ I_{i1}^k& ......& I_{\mathrm{in}}^k\end{array}\right]=\left[\begin{array}{ccc}\mathrm{\Δ}{P}_{i1}^k& ......& {\mathrm{\ΔP}}_{\mathrm{in}}^k\\ \mathrm{\Δ}{I}_{i1}^k& ......& \mathrm{\Δ}{I}_{\mathrm{in}}^k\end{array}\right]=\left[\begin{array}{c}\mathrm{\Δ}{P}_{\mathrm{ij}}^k\\ \mathrm{\Δ}{I}_{\mathrm{ij}}^k\end{array}\right].$

After completing matrix operation, for matrix of differences in element carry out double level " get pulverised " process, namely judge or in whether have element to set user respective objects value range of tolerable variance in, if or in have element in corresponding power value tolerance or current limit value range of tolerable variance, then set middle corresponding element is 0, otherwise retains constant.So just obtain degree reduction matrix compared to degree reduction matrix may neutral element be there is in the first row.

Step 4: degree reduction matrix first trip dimension judges and amplitude delta feedback;

Get degree reduction matrix the first row be designated as judge whether middle element is all 0, if be all zero, then terminates amplitude adjustment, (the amplitude output valve of the i-th test group after kth time amplitude adjustment) is the range value of the signal of each frequency in required test group; If be not all 0, then by obtain corresponding signal amplitude increment (derivation relation is between the two determined by link parameter, because link parameter is all dB form, input and output amplitude and enlargement factor or attenuation coefficient are all converted to the plus-minus between dB, therefore the increment of input and output is unaffected is linear relationship), then during amplitude adjustment next time, in signal source, the amplitude set value of each frequency is return step 2 subsequently, carry out kth+1 amplitude adjustment, until the degree reduction matrix dimension obtained after the adjustment of certain amplitude is 0, then complete bin magnitudes adjustment in this test group.

After the adjustment of this test group signal amplitude, the sensitivity of test specimen just can be observed to have responded, just export next test group after observational record result, test, until all test groups are completed.

Be employed herein matrix operation, the adjustment of multifrequency high-speed sensibility test intermediate-frequeney point amplitude will take into account output power value and the hole coupling current value of each frequency, and matrix operation brings great convenience to data processing.The result matrix of differences of the present invention to matrix operation carried out double level " get pulverised " process, depression of order is carried out to matrix of differences.Double level " gets pulverised " and had both met the demand of conducted susceptibility closed loop test, and degree reduction matrix brings great convenience to again the adjustment of amplitude.The inventive method can realize the rapid adjustment of multifrequency high-speed sensibility test intermediate-frequeney point amplitude.

Accompanying drawing explanation

Fig. 1 is multifrequency high-speed sensibility test connection layout in prior art;

Fig. 2 is multifrequency high-speed sensibility test test flow chart in prior art;

Fig. 3 is for multifrequency high-speed sensibility test intermediate-frequeney point group amplitude adjustment process flow diagram in the present invention.

Embodiment

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

Multifrequency high-speed sensibility testing process (see accompanying drawing 2) of the prior art, first detecting information is filled in by user, carry out single-frequency calibration, acquisition frequency divides into groups, then single group test signal produces and injects, amplitude adjustment is carried out in test signal monitoring, acquisition amplitude adjustment amount, until the interior all frequencies of single group reach calibrate power or current limit value, finally records sensitivity phenomenon; And start next frequency group until all frequency groups are completed, obtain test result.The amplitude adjustment member that the present invention is directed to each frequency in above-mentioned multifrequency high-speed sensibility method of testing intermediate-frequeney point group is improved, and provides a kind of fast and effectively for the method for adjustment of multifrequency high-speed sensibility test intermediate-frequeney point amplitude.In conjunction with the process flow diagram (see accompanying drawing 3) of the inventive method, the implementation step of concrete bin magnitudes adjustment is as follows:

Step one: obtain detecting information, establishing target matrix;

From detecting information, obtain conducted susceptibility and test the target limit value electric current I (dB μ A) chosen, current limit value tolerance ± Δ I(dB μ A); The calibration performance number P of each test frequency ₁... P _m(dBm) (M represents that test is always counted), performance number tolerance ± Δ P(dBm); Grouping information m, n (m represents packet count, and n represents each group frequency number).

Build the objective matrix OB of each test group _i,

${\mathrm{OB}}_i=\left[\begin{array}{c}{P}_{\mathrm{ij}}\\ I\end{array}\right],$ (i=1 ~ m tests group # variable, each group test frequency number variable of j=1 ~ n)

For the first test group, objective matrix is ${\mathrm{OB}}_1=\left[\begin{array}{ccc}{P}_{11}& ......& P_{1n}\\ I& ......& I\end{array}\right].$

Step 2: setting single frequency point signal amplitude, obtains test data;

For the test of each test group, $A_i^k=\left[A_{\mathrm{ij}}^k\right]=[A_{i1}^k,A_{i2}^k,...,A_{\mathrm{in}}^k],$ After representing kth time adjustment, the signal source output amplitude setting value of n frequency in i-th test group, couple current value on the cable that after amplitude of testing subsequently adjusts, in this test group, single-frequency point is corresponding and the output power of power amplifier, after kth time amplitude adjustment, obtain amplitude measurement value matrix:

$T_i^k=\left[\begin{array}{ccc}{P}_{i1}^k& ......& P_{\mathrm{in}}^k\\ I_{i1}^k& ......& I_{\mathrm{in}}^k\end{array}\right].$

In test group, single frequency point signal initial value is (A is a less definite value, will as the amplitude output valve of the i-th test group the 0th adjustment.

Step 3: process that matrix operation and double level " get pulverised ";

By measured value matrix with objective matrix OB _icarry out matrix operation, obtain the matrix of differences of the rear measured value of k adjustment and desired value

$\mathrm{\Δ}{T}_i^k={\mathrm{OB}}_i-T_i^k=\left[\begin{array}{ccc}{P}_{i1}& ......& P_{\mathrm{in}}\\ I& ......& I\end{array}\right]-\left[\begin{array}{ccc}{P}_{i1}^k& ......& P_{\mathrm{in}}^k\\ I_{i1}^k& ......& I_{\mathrm{in}}^k\end{array}\right]=\left[\begin{array}{ccc}\mathrm{\Δ}{P}_{i1}^k& ......& {\mathrm{\ΔP}}_{\mathrm{in}}^k\\ \mathrm{\Δ}{I}_{i1}^k& ......& \mathrm{\Δ}{I}_{\mathrm{in}}^k\end{array}\right]=\left[\begin{array}{c}\mathrm{\Δ}{P}_{\mathrm{ij}}^k\\ \mathrm{\Δ}{I}_{\mathrm{ij}}^k\end{array}\right].$

After completing matrix operation, for in element carry out double level " get pulverised " process, namely judge or in whether have element to set user respective objects value tolerance (comprising current limit value tolerance and performance number tolerance) scope in, if or in have element within the scope of respective tolerances, then setting is corresponding be 0, or setting corresponding matrix element be 0, otherwise retain constant.So just obtain degree reduction matrix compared to matrix may neutral element be there is in the first row.

Example: suppose that i-th group after kth time amplitude adjustment, within the scope of ± Δ P, within the scope of ± Δ I, then $\mathrm{\Δ}{\mathrm{RET}}_i^k=\left[\begin{array}{cccccc}0& \mathrm{\Δ}{P}_{i2}^k& 0& ......& 0& 0\\ \mathrm{\Δ}{I}_{i1}^k& \mathrm{\Δ}{I}_{i2}^k& \mathrm{\Δ}{I}_{i3}^k& ......& \mathrm{\Δ}{I}_{i(n-1)}^k& \mathrm{\Δ}{I}_{\mathrm{in}}^k\end{array}\right],$ Then in the first row, occur 40.

Step 4: degree reduction matrix first trip dimension judges and amplitude delta feedback;

Get matrix the first row be designated as judge whether middle element is all 0, if be all zero, then terminates adjustment, be the range value of the signal of each frequency in required test group; If be not all 0, then by obtain corresponding signal amplitude increment then during amplitude adjustment next time, in signal source, the amplitude set value of each frequency is enter step 2 subsequently, carry out kth+1 amplitude adjustment, until the degree reduction matrix dimension obtained after the adjustment of certain amplitude is 0, then complete bin magnitudes adjustment in this test group.

In this test group after signal amplitude adjustment, the sensitivity of test specimen just can be observed to have responded, just export next frequency test group after observational record result, test, until the test group of all frequencies is completed.

Due to the non-linear effects of testing apparatus and test specimen, the test result after amplitude adjustment may have slight deviations, but all in allowed limits, substantially there will not be the unexpected increase of couple current, exceed in the tolerance range of test specimen.Use this method, generally just can complete the amplitude adjustment of multifrequency point through 2 ~ 3 amplitude adjustment.

embodiment

In certain test, select a certain electronic equipment common cable to be test specimen, 10kHz ~ 30MHz carries out conducted susceptibility test, and in this frequency range, stepping is 5%.Select current limit value 5, power amplifier selects AR power amplifier, model 150A400, injection probe 9142, and calibration connects as Fig. 1, through previous calibration and after optimizing grouping, obtains grouping sheet.From grouping sheet, choose the 5th group adjust, the frequency group of selection is as follows.

	1st frequency	2nd frequency	3rd frequency	4th frequency	5th frequency	6th frequency	7th frequency
								Frequency (kHz)	2785.96	22704.67	12040.77	227.05	146.36	37.34	12.76
Calibration power (dBm)	45	44.3	44.1	36.4	33.8	29.1	28.5
								Limiting current (dB μ A)	115	115	115	115	115	115	115

Step one: obtain detecting information, establishing target matrix;

The target current ultimate value of this conducted susceptibility test is 115dB μ A, and current limit value tolerance is ± 1dB μ A; In test group, as above table the second is capable for the calibration power of each frequency, and performance number tolerance is ± 1dBm, has 7 single-frequency points in each group.

Establishing target matrix is ${\mathrm{OB}}_5=\left[\begin{array}{ccc}{P}_{51}& ......& P_{57}\\ I& ......& I\end{array}\right]=\left[\begin{array}{ccccccc}45& 44.3& 44.1& 36.4& 33.8& 29.1& 28.5\\ 115& 115& 115& 115& 115& 115& 115\end{array}\right]$

Step 2: setting single frequency point signal amplitude, obtains test data;

Single frequency point signal initial value in setting group in monitoring group, the output power of each frequency and hole coupling current value, obtain measured value $T_5^0=\left[\begin{array}{ccc}{P}_{51}^0& ......& P_{57}^0\\ I_{51}^0& ......& I_{57}^0\end{array}\right]=\left[\begin{array}{ccccccc}26.6& 25.9& 26.4& 20.4& 18.8& 16.1& 15.3\\ 35.4& 36.5& 37.8& 42& 25.3& 23.6& 13.6\end{array}\right].$

Step 3: process that matrix operation and double level " get pulverised ";

By matrix with OB ₅carry out matrix operation, obtain the matrix of differences of the rear measured value of 0 adjustment and desired value

$\begin{array}{c}\mathrm{\Δ}{T}_5^0={\mathrm{OB}}_5-T_5^0\\ =\left[\begin{array}{ccc}{P}_{51}& ......& P_{57}\\ I& ......& I\end{array}\right]-\left[\begin{array}{ccc}{P}_{51}^0& ......& P_{57}^0\\ I_{51}^0& ......& I_{57}^0\end{array}\right]=\left[\begin{array}{ccc}\mathrm{\Δ}{P}_{51}^0& ......& \mathrm{\Δ}{P}_{57}^0\\ \mathrm{\Δ}{I}_{51}^k& ......& \mathrm{\Δ}{I}_{57}^k\end{array}\right]=\left[\begin{array}{c}\mathrm{\Δ}{P}_{5j}^0\\ \mathrm{\Δ}{I}_{5j}^k\end{array}\right]\\ =\left[\begin{array}{ccccccc}45& 44.3& 44.1& 36.4& 33.8& 29.1& 28.5\\ 115& 115& 115& 115& 115& 115& 115\end{array}\right]-\left[\begin{array}{ccccccc}26.6& 25.9& 26.4& 20.4& 18.8& 16.1& 15.3\\ 35.4& 36.5& 37.8& 42& 25.3& 23.6& 13.6\end{array}\right]\\ =\left[\begin{array}{ccccccc}18.4& 18.4& 17.7& 16& 15& 13& 13.2\\ 79.6& 78.5& 77.2& 73& 89.7& 91.4& 101.4\end{array}\right]\end{array}$

$\left[\mathrm{\Δ}{P}_{5j}^0\right]=\left[\begin{array}{ccccccc}18.4& 18.4& 17.7& 16& 15& 13& 13.2\end{array}\right]$

$\left[\mathrm{\Δ}{I}_{5j}^0\right]=\left[\begin{array}{ccccccc}79.6& 78.5& 77.2& 73& 89.7& 91.4& 101.4\end{array}\right]$

Matrix operation results shows, or in all element-free within the scope of corresponding tolerance ± 1dBm or ± 1dB μ A, middle element all remains unchanged, then

Step 4: degree reduction matrix first trip dimension judges and amplitude delta feedback;

Get matrix the first row be designated as $\mathrm{\Δ}{\mathrm{REPT}}_5^0=\left[\begin{array}{ccccccc}18.4& 18.4& 17.7& 16& 15& 13& 13.5\end{array}\right],$ Visible element be not zero entirely, then will be reacted on signal source amplitude delta, $\mathrm{\Δ}{A}_5^1=\left[\begin{array}{ccccccc}18.4& 18.4& 17.7& 16& 15& 13& 13.2\end{array}\right],$ Then:

$\begin{array}{c}{A}_5^1=A_5^0+\mathrm{\Δ}{A}_5^1\\ =\left[\begin{array}{ccccccc}-30& -30& -30& -30& -30& -30& -30\end{array}\right]+\left[\begin{array}{ccccccc}18.4& 18.4& 17.7& 16& 15& 13& 13.2\end{array}\right]\\ =\left[\begin{array}{ccccccc}-11.6& -11.6& -12.3& -14& -15& -17& -16.8\end{array}\right]\end{array}$

With carry out the range value in setting signal source, in monitoring group again, the output power of each frequency and hole coupling current value, obtain measured value $T_5^1=\left[\begin{array}{ccc}{P}_{51}^1& ......& P_{57}^1\\ I_{51}^1& ......& I_{57}^1\end{array}\right]=\left[\begin{array}{ccccccc}44.3& 44.6& 43.8& 34.9& 34.2& 30.2& 27.9\\ 68.8& 76.9& 65.2& 62.8& 57.6& 49.7& 53.1\end{array}\right].$

$\begin{array}{c}\mathrm{\Δ}{T}_5^1={\mathrm{OB}}_5-T_5^1\\ =\left[\begin{array}{ccccccc}45& 44.3& 44.1& 36.4& 33.8& 29.4& 28.5\\ 115& 115& 115& 115& 115& 115& 115\end{array}\right]\\ =\left[\begin{array}{ccccccc}0.7& -0.3& 0.3& 1.5& -0.4& -1.1& 0.6\\ 46.2& 38.1& 49.8& 52.2& 57.4& 65.3& 61.9\end{array}\right]\end{array}-\left[\begin{array}{ccccccc}44.3& 44.6& 43.8& 34.9& 34.2& 30.2& 27.9\\ 68.8& 76.9& 65.2& 62.8& 57.6& 49.7& 53.1\end{array}\right]$

Matrix operation results shows, in have 5 elements within the scope of corresponding tolerance ± 1dBm, then will middle corresponding element is set as 0, and all the other remain unchanged.

$\mathrm{\Δ}{\mathrm{RET}}_5^1=\left[\begin{array}{ccccccc}0& 0& 0& 1.5& 0& -1.1& 0\\ 46.2& 38.1& 49.8& 52.2& 57.4& 65.3& 61.9\end{array}\right]$

$\mathrm{\Δ}{\mathrm{REPT}}_5^1=\left[\begin{array}{ccccccc}0& 0& 0& 1.5& 0& -1.1& 0\end{array}\right]$

$\mathrm{\Δ}{A}_5^2=\left[\begin{array}{ccccccc}0& 0& 0& 1.5& 0& -1.1& 0\end{array}\right],$ Then:

$\begin{array}{c}{A}_5^2=A_5^1+\mathrm{\Δ}{A}_5^2\\ =\left[\begin{array}{ccccccc}-11.6& -11.6& -12.3& -14& -15& -17& -16.8\end{array}\right]+\left[\begin{array}{ccccccc}0& 0& 0& 1.5& 0& -1.1& 0\end{array}\right]\\ =\begin{array}{}\end{array}\left[\begin{array}{ccccccc}-11.6& -11.6& -12.3& -12.5& -15& -18.1& -16.8\end{array}\right]\end{array}$

Subsequently, only to need in monitoring group the 4th, the 6th, the output power of totally two points and hole coupling current value.

$T_5^2=\left[\begin{array}{ccc}{P}_{51}^2& ......& P_{57}^2\\ I_{51}^2& ......& I_{57}^2\end{array}\right]=\left[\begin{array}{ccccccc}44.3& 44.6& 43.8& 35.8& 34.2& 29.4& 27.9\\ 68.8& 76.9& 65.2& 67.8& 57.6& 47.9& 53.1\end{array}\right]$

$\begin{array}{c}\mathrm{\Δ}{T}_5^2={\mathrm{OB}}_5-T_5^2\\ =\left[\begin{array}{ccccccc}45& 44.3& 44.1& 36.4& 33.8& 29.1& 28.5\\ 115& 115& 115& 115& 115& 115& 115\end{array}\right]\\ =\left[\begin{array}{ccccccc}0.7& -0.3& 0.3& 0.6& -0.4& -0.3& 0.6\\ 46.2& 38.1& 49.8& 47.2& 57.4& 67.1& 61.9\end{array}\right]\end{array}-\left[\begin{array}{ccccccc}44.3& 44.6& 43.8& 35.8& 34.2& 29.4& 27.9\\ 68.8& 76.9& 65.2& 67.8& 57.6& 47.9& 53.1\end{array}\right]$

Matrix operation results shows, in have 7 elements all within the scope of the tolerance ± 1dBm of equipment, then will middle corresponding element is all set as 0.

$\mathrm{\Δ}{\mathrm{RET}}_5^2=\left[\begin{array}{ccccccc}0& 0& 0& 0& 0& 0& 0\\ 46.2& 38.1& 49.8& 47.2& 57.4& 67.1& 61.9\end{array}\right]$

$\mathrm{\Δ}{\mathrm{REPT}}_5^1=\left[\begin{array}{ccccccc}0& 0& 0& 0& 0& 0& 0\end{array}\right]$

The then test data of the 5th group, after 2 amplitude adjustment, the output power value of whole 7 test frequencies all reaches the requirement of calibration performance number.In test group, the test amplitude of single-frequency point reaches the conditional request of test.

Generally, can be that the output power value of frequency reaches requirement in test, for the reasonable cable of coupling ability, also may be that couple current value first reaches standard-required, if the hole coupling current value of a certain frequency reaches requirement, the power difference of correspondence is converted to 0, and all the other are constant.

Claims (1)

1., for a multifrequency high-speed sensibility test intermediate-frequeney point amplitude adjustment method, it is characterized in that: described method of adjustment comprises the steps:

Step one: obtain detecting information, establishing target matrix;

From detecting information, obtain conducted susceptibility and test the target limit value electric current I chosen, current limit value tolerance ± Δ I, unit dB μ A; The calibration performance number P of each test frequency ₁p _m, unit dBm, M represent the total frequency number of test, performance number tolerance ± Δ P, unit dBm; Grouping information m, n, m represent packet count, and n represents frequency number in each test group;

Build the objective matrix OB of each test group _i,

${\mathrm{OB}}_i=\left[\begin{array}{c}{P}_{ij}\\ I\end{array}\right],$

Wherein, i=1 ~ m is test group # variable, and j=1 ~ n is each test group build-in test frequency number variable;

Step 2: setting single frequency point signal amplitude, obtains test data;

For the test of each grouping, after representing kth time amplitude adjustment, the signal source output amplitude setting value of n frequency in i-th group, couple current value on the cable that after amplitude of testing subsequently adjusts, in test group, single-frequency point is corresponding and the output power of power amplifier, after kth time amplitude adjustment, obtain amplitude measurement value matrix $T_i^k=\left[\begin{array}{ccc}{P}_{i1}^k& \mathrm{......}& P_{in}^k\\ I_{i1}^k& \mathrm{......}& I_{in}^k\end{array}\right],$ Wherein, after representing kth time amplitude adjustment, the output power of 1 ~ n test frequency in the i-th test group; after representing kth time amplitude adjustment, the couple current value of 1 ~ n test frequency in the i-th test group;

In group, single frequency point signal amplitude initial value is will as the amplitude output valve after i-th group of the 0th amplitude adjustment;

Step 3: process that matrix operation and double level " get pulverised ";

By amplitude measurement value matrix with objective matrix OB _icarry out matrix operation, obtain the matrix of differences of kth time amplitude adjusted amplitude measured value matrix and objective matrix

${\mathrm{\ΔT}}_i^k={\mathrm{OB}}_i-T_i^k=\left[\begin{array}{ccc}{P}_{i1}& \mathrm{......}& P_{in}\\ I& \mathrm{......}& I\end{array}\right]-\left[\begin{array}{ccc}{P}_{i1}^k& \mathrm{......}& P_{in}^k\\ I_{i1}^k& \mathrm{......}& I_{in}^k\end{array}\right]=\left[\begin{array}{ccc}{\mathrm{\ΔP}}_{i1}^k& \mathrm{......}& {\mathrm{\ΔP}}_{in}^k\\ {\mathrm{\ΔI}}_{i1}^k& \mathrm{......}& {\mathrm{\ΔI}}_{in}^k\end{array}\right]\left[\begin{array}{c}{\mathrm{\ΔP}}_{ij}^k\\ {\mathrm{\ΔI}}_{ij}^k\end{array}\right];$

After completing matrix operation, for matrix of differences in element carry out double level " get pulverised " process, namely judge or in whether have element to set user respective objects value range of tolerable variance in, if or in have element in corresponding power value tolerance or current limit value range of tolerable variance, then set be 0 or matrix of differences in corresponding element be 0 otherwise retain constant; So just obtain degree reduction matrix

Step 4: degree reduction matrix first trip dimension judges and amplitude delta feedback;

Get degree reduction matrix the first row be designated as judge whether middle element is all 0, if be all zero, then terminates amplitude adjustment, be the range value of the signal of each frequency in required test group; If be not all 0, then by obtain corresponding signal amplitude increment then during amplitude adjustment next time, in signal source, the amplitude set value of each frequency is return step 2 subsequently, carry out kth+1 amplitude adjustment, until the degree reduction matrix dimension obtained after the adjustment of certain amplitude is 0, then complete bin magnitudes adjustment in this test group.