CN110133411A - A kind of method of horizontal polarization bounded-wave electromagnetic pulse simulator inside field strength uniformity enhancing - Google Patents
A kind of method of horizontal polarization bounded-wave electromagnetic pulse simulator inside field strength uniformity enhancing Download PDFInfo
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- CN110133411A CN110133411A CN201910470275.4A CN201910470275A CN110133411A CN 110133411 A CN110133411 A CN 110133411A CN 201910470275 A CN201910470275 A CN 201910470275A CN 110133411 A CN110133411 A CN 110133411A
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
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- G01R31/001—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing
Abstract
A kind of method that the present invention proposes horizontal polarization bounded-wave electromagnetic pulse simulator inside field strength uniformity enhancing, improve the uniformity of field strength in a certain range inside simulator, so that effective test block area for EMP effect experiment increases, the performance of simulator is finally improved.This method is that the two sides pole plate shape of simulator on the ground is changed to two symmetrical eccentric arcs by the parallel lines of two equal lengths；The symmetry axis of two symmetrical eccentric arcs is x-axis, the size d that dehisces that two symmetrical eccentric arc ends are formedkSuitable with the range in the test section direction z, the respective center of circle of left and right side eccentric arc is located at O in z-axis1The right side, the left side of point；From the bottom of simulator bipyramid, upper described two symmetrical eccentric arcs draw metal wire to the ground respectively, constitute the pole plate of simulator two sides, obtain the simulator of field strength uniformity enhancing.
Description
Technical field
The present invention relates to a kind of enhancings of horizontal polarization bounded-wave electromagnetic pulse simulator close beta area field strength uniformity
Method.
Background technique
For system research electronic system electromagnetic pulse (electromagnetics pulse, EMP) effect and reinforcing
Measure, it is necessary to establish electromagnetic pulse analog machine.Currently, existing horizontal polarization environmental simulation equipment mainly has bipyramid both at home and abroad
Cage type radiates wave antenna and the bounded-wave electromagnetic pulse simulator of horizontal polarization etc..
Bipyramid cage type radiate wave antenna, although with normal impedance, broadband and be parallel to biconical antenna axis field it is equal
The advantages that evenness is good, but very big diameter and enough length are needed, sufficiently large effective test block area could be obtained, this is just
Lead to involving great expense for bipyramid cage modle antenna.
Horizontal polarization bounded-wave electromagnetic pulse simulator, as document 1:BAILEY V et al. is published in " IEEE
Trans.Plasma Science " the 2557-2558 pages of volume 38 of periodical 2010, " A6-MV pulser to drive
horizontally polarized EMP simulators"；Document 2: Zhu Xiangqin et al. is published in and " calculates physics " periodical
The 1-8 pages of the network edition in 2018, " Parallel Simulation of large-scale horizontal polarization electromagnetic pulse bounded-wave electromagnetic pulse simulator is analyzed ",
Network address: http://kns.cnki.net/kcms/detail/11.2011.O4.20180928.1403.004.ht ml.This type
The simulator of the horizontal polarization of type not only low cost, but also free space and EMP environment near the ground can be provided.But, this
It is empty that horizontal polarization bounded wave EMP simulator must provide uniform field to Device under test (equipment under test, EUT)
Between, i.e., it is determined for effective test block area of EMP effect experiment by the uniformity of field strength inside simulator, therefore this simulation
The uniformity of field strength directly affects the performance of simulator inside device.
Therefore, for horizontal polarization bounded-wave electromagnetic pulse simulator, it is necessary to the enhancing to its inside field strength uniformity
Mode is studied.There is no relevant reports both at home and abroad at present.
Summary of the invention
A kind of method that the present invention proposes horizontal polarization bounded-wave electromagnetic pulse simulator inside field strength uniformity enhancing, mentions
Inside high simulator in a certain range field strength uniformity so that effective test block area for EMP effect experiment increases,
Finally improve the performance of simulator.
Applicants have found that: keeping the high constant and bipyramid characteristic impedance of horizontal polarization bounded wave EMP simulator frame
In the case where matching, from the bipyramid bottom of simulator, bracing wire constitutes simulator pole plate to the ground, if the pole plate of simulator on the ground
Shape by the parallel lines of two equal lengths is changed to symmetrical off-centre operation arcuation, and (" bias " here refers to that the center of circle of circular arc is inclined
Projection O from simulator bipyramid central point on ground1Point) when, there is uniformity in the field strength inside simulator in certain area
The phenomenon that enhancing.
Solution of the invention is summarized as follows as a result:
A kind of method of horizontal polarization bounded-wave electromagnetic pulse simulator inside field strength uniformity enhancing, comprising:
The two sides pole plate shape of simulator on the ground is changed to two symmetrically by the parallel lines of two equal lengths
Eccentric arc；The arc length of the eccentric arc is equal to the length w of the parallel lines, if simulator bipyramid central point is on ground
It is projected as O1Point, by O1Point is simultaneously denoted as z-axis perpendicular to the reference axis of the parallel lines, by O1It puts and is parallel to described flat
The reference axis of row straight line is denoted as x-axis, then the symmetry axis of two symmetrical eccentric arcs is x-axis, two symmetrical eccentric arc ends
The size d that dehisces that portion is formedkSuitable with the range in the test section direction z, the respective center of circle of left and right side eccentric arc is located at z
O on axis1The right side, the left side of point；
From the bottom of simulator bipyramid, upper described two symmetrical eccentric arcs draw metal wire to the ground respectively, constitute simulation
The pole plate of device two sides obtains the simulator of field strength uniformity enhancing.
Wherein, the location and shape of described two symmetrical eccentric arcs can determine in the following way:
If the pole plate shape of conventional simulation device on the ground be two equal lengths parallel left/right straight line, this two
The length of straight line is w, spacing d；Eccentric arc and corresponding parallel lines are tangent at z-axis, wherein right side eccentric arc
Radius be denoted as r2, the center location O of right side eccentric arc2Point deviates O in the direction-z1Point d2Distance at, enable deformation after simulate
The d that dehisces of devicekIt is identical as the range in the test section direction z, and take d3=dk/ 2, then r2It is acquired according to following two formula:
r2·2·atan[L/(r2-d3)]=w
And d2=r2-d/2。
Scheme parsing and the specific implementation process is as follows:
1) the pole plate shape of conventional simulation device on the ground be two equal lengths parallel left/right straight line, if this two
The length of straight line is w, spacing d.Conventional simulation device is deformed, as shown in Figure 1, right circular arc and routine on ground
The right straight line of simulator is tangent, obtains point of contact Q1And
d1+d3=d/2 (1)
Keep the d that dehisces of simulator after deformingkIt is identical as the range in the test section direction z.To make the test section upper right corner
Measuring point is maintained a certain distance with pole plate, if d in above formula3=dk/2；By d and d3Value substitute into above formula, d can be obtained1Value.
2) keep the arc length of single circular arc identical as conventional simulation device unipolar plate length w, i.e.,
r2·2·atan[L/(d1+d2)]=w (2)
In addition, as can be seen from FIG. 1,
d1+d2=r2-d3 (3)
(3) formula is substituted into (2) and (4) respectively, is obtained
r2·2·atan[L/(r2-d3)]=w (5)
According to two formula above, r can be obtained2Value.Again by d1、d3And r2Value substitute into (3) formula, find out d2Value.
3) according to above-mentioned parameter, new ground circular arc is drawn.The technique of painting are as follows:
A) it sets simulator bipyramid central point and is projected as O on ground1Point deviates O along the direction-z1Point d2Distance obtain
O2Point；With O2Point is the center of circle/r2For radius, a circle is drawn.
B) round z≤d is cut with square1Part, obtain right circular arc.
C) make about the symmetrical left arc of z=0.
4) from the bottom of simulator bipyramid, the left/right side circular arc on above-mentioned ground draws metal wire respectively, constitutes simulator
The pole plate of two sides, to obtain new simulator.
Beneficial effects of the present invention are as follows:
1, it is based on the bracing wire of simulator pole plate, by changing ground pole plate shape, that is, it is uniform to solve field strength inside simulator
The weaker technical problem of property；
2, in the case where simulator frame height fixation and impedance matching, so that simulator is for the effective of EMP effect experiment
Test block area increases, and simulator performance is improved.
Detailed description of the invention
Fig. 1 is the shape of simulator pole plate on the ground.In figure, the right straight line of 1- conventional simulation device, a 2- conventional simulation device left side
Straight line, 3- the present invention in simulator left arc, 4- the present invention in simulator right circular arc.In addition, in figure also
Simulator bipyramid central point is marked in the position O of the projection on ground1The right circles that point and new simulator obtain after intersecting with ground
The center position O of arc2Point.
Fig. 2 is the region internal electric field horizontal polarized components peak of 30m × 30m on the horizontal plane of simulator inner distance ground 3m
The distribution map of value, wherein (a) is the data of conventional simulation device, it (b) is the data of simulator of the present invention.
Specific embodiment
In order to realize the uniformity enhancing of field strength inside horizontal polarization simulator, the application use by cone bottom to the ground on
The simulator that constitutes of eccentric arc bracing wire, realize the uniformity enhancing of field strength inside simulator.With reference to the accompanying drawing, pass through
The present invention is further described for embodiment.
The structure of the present embodiment is as shown in Figure 1, set a height of 15m of simulator frame, two intersected on conventional simulation device and ground
Length w=72m, the spacing d=48m of a parallel lines.Bipyramid central point is in the position of the projection on ground position O1Point, new simulator
The center position O of the right circular arc obtained after intersecting with ground2Point, distance between two points d2.New simulator in the present embodiment with
Ground intersection is two circular arcs of left/right, and circular arc is dehisced for dk；The direction z test section range is about 26.8m inside simulator.Mould
Quasi- device driving source is the Double exponential pulse that rising edge is 2.5ns, halfwidth is 23ns.
Specific link is described below:
1) when the pole plate shape of simulator on the ground is the parallel left/right straight line of two equal lengths, claim such
Simulator is conventional simulation device, and the length for setting this two straight lines is w=72m, spacing d=48m.To conventional simulation device
It is deformed.As shown in Figure 1, right circular arc and the right straight line of former conventional simulation device are tangent on ground, point of contact Q is obtained1And
d1+d3=d/2 (1)
Keep the d that dehisces of simulator after deformingkIt is identical as the range 26.8m in the test section direction z, then d in above formula3=dk/2
=13.4；By d and d3Value substitute into above formula, d can be obtained1=10.6m.
2) keep the arc length of single circular arc identical as conventional simulation device unipolar plate length w, i.e.,
r2·2·atan[L/(d1+d2)]=w=72m (2)
In addition, according to upper figure it is found that
d1+d2=r2-d3 (3)
(3) formula is substituted into (2) and (4) respectively, is obtained
r2·2·atan[L/(r2-d3)]=w=72m (5)
According to two formula above, r can be obtained2=58.236m.Again by d1、d3And r2Value substitute into (3) formula, find out d2=
34.236m。
3) according to above-mentioned parameter, new ground circular arc is drawn.The technique of painting are as follows:
A) it sets simulator bipyramid central point and is projected as O on ground1Point deviates O along the direction-z1Point d2Distance obtain
O2Point；With O2Point is the center of circle, r2=58.236m is radius, draws a circle.
B) round z≤d is cut with square1Part, obtain right circular arc.
C) make about the symmetrical left arc of z=0.
4) from the bottom of simulator bipyramid, the left/right side circular arc on above-mentioned ground draws metal wire respectively, constitutes simulator
The pole plate of two sides, to obtain new simulator.
Fig. 2 (a) and Fig. 2 (b) is respectively the horizontal plane of conventional simulation device and simulator inner distance ground 3m of the invention
The distribution map of the region internal electric field horizontal polarized components peak value of upper 30m × 26.8m.Comparison diagram 2 (a) and Fig. 2 (b) it is found that using
The field inside new simulator that the present invention obtains is more preferable than the field uniformity inside conventional simulation device.
It is applicant's understanding that the principle of field strength uniformity enhancing is inside new simulator: circular arc on simulator ground according to
After certain mode is bent, according to the new simulator pole plate that ground circular arc bracing wire is constituted, it can make inside new simulator
The enhanced intensity of portion increases with the ratio of center field strength, to improve the uniformity of simulator fields inside.
Above embodiments have further made sufficient explanation to summary of the invention, and the design parameter of each component can root
It is set according to actual demand, the content that those of ordinary skill is enough specification through the invention is implemented.In the frame of claim
Under frame, any improvement based on thinking of the present invention belongs to the scope of the claims.
Claims (2)
1. a kind of method of field strength uniformity enhancing inside horizontal polarization bounded-wave electromagnetic pulse simulator, which is characterized in that packet
It includes:
The two sides pole plate shape of simulator on the ground is changed to two symmetrical bias by the parallel lines of two equal lengths
Circular arc；The arc length of the eccentric arc is equal to the length w of the parallel lines, if simulator bipyramid central point is in the projection on ground
For O1Point, by O1Point is simultaneously denoted as z-axis perpendicular to the reference axis of the parallel lines, by O1It puts and is parallel to the straight parallel
The reference axis of line is denoted as x-axis, then the symmetry axis of two symmetrical eccentric arcs is x-axis, two symmetrical eccentric arc end shapes
At the size d that dehisceskSuitable with the range in the test section direction z, the respective center of circle of left and right side eccentric arc is located at O in z-axis1
The right side, the left side of point；
From the bottom of simulator bipyramid, upper described two symmetrical eccentric arcs draw metal wire to the ground respectively, constitute simulator two
The pole plate of side obtains the simulator of field strength uniformity enhancing.
2. the side of field strength uniformity enhancing inside horizontal polarization bounded-wave electromagnetic pulse simulator according to claim 1
Method, which is characterized in that the location and shape of described two symmetrical eccentric arcs specifically determine in the following way:
If the pole plate shape of conventional simulation device on the ground is the parallel left/right straight line of two equal lengths, this two straight lines
Length be w, spacing d；Eccentric arc and corresponding parallel lines are tangent at z-axis, wherein the half of right side eccentric arc
Diameter is denoted as r2, the center location O of right side eccentric arc2Point deviates O in the direction-z1Point d2Distance at, enable simulator after deformation
Dehisce dkIt is identical as the range in the test section direction z, and take d3=dk/ 2, then r2It is acquired according to following two formula:
r2·2·atan[L/(r2-d3)]=w
And d2=r2-d/2。
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Citations (4)
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|---|---|---|---|---|
| CN102636702A (en) * | 2012-04-25 | 2012-08-15 | 中国人民解放军理工大学 | Bounded-wave electromagnetic pulse simulator of elliptic arc transition section |
| CN105206925A (en) * | 2015-09-29 | 2015-12-30 | 中国舰船研究设计中心 | Horizontal polarization nuclear electromagnetic pulse simulator antenna |
| US20170025221A1 (en) * | 2015-07-24 | 2017-01-26 | Daido Steel Co., Ltd. | Method for manufacturing sintered magnet |
| CN208421091U (en) * | 2018-06-20 | 2019-01-22 | 西安交通大学 | A kind of Bounded-wave Simulator of taper-arc transition |
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2019
- 2019-05-31 CN CN201910470275.4A patent/CN110133411B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102636702A (en) * | 2012-04-25 | 2012-08-15 | 中国人民解放军理工大学 | Bounded-wave electromagnetic pulse simulator of elliptic arc transition section |
| US20170025221A1 (en) * | 2015-07-24 | 2017-01-26 | Daido Steel Co., Ltd. | Method for manufacturing sintered magnet |
| CN105206925A (en) * | 2015-09-29 | 2015-12-30 | 中国舰船研究设计中心 | Horizontal polarization nuclear electromagnetic pulse simulator antenna |
| CN208421091U (en) * | 2018-06-20 | 2019-01-22 | 西安交通大学 | A kind of Bounded-wave Simulator of taper-arc transition |
Non-Patent Citations (1)
| Title |
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| 潘晓东: "有界波模拟器内部电场分布仿真研究", 《测试技术学报》 * |
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