CN103323685A - Antenna plane near-field test scanner - Google Patents
Antenna plane near-field test scanner Download PDFInfo
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- CN103323685A CN103323685A CN2013102960557A CN201310296055A CN103323685A CN 103323685 A CN103323685 A CN 103323685A CN 2013102960557 A CN2013102960557 A CN 2013102960557A CN 201310296055 A CN201310296055 A CN 201310296055A CN 103323685 A CN103323685 A CN 103323685A
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Abstract
An antenna plane near-field test scanner adopts a brand-new design and is composed of a direct drive motor (a linear motor for short) serving as a drive element and an industrial personal computer and a position measurer serving as control units, as well as a probe and a PC (personal computer) serving as data sampling units. In an antenna plane near-field test, in particular a millimeter wave antenna test, a space plane is scanned with high precision at a high speed and antenna near-field amplitude-phase data is sampled at the same time. The linear motor is used as the drive element for driving the scanner to move in X and Y directions, a screw rod, a gear wheel, a rack and a speed reducer are not used, a load is directly driven, and an error such as a back clearance is eliminated. The advantage of closed-loop control is brought into fully play, accurate and high-speed positioning is realized, and the needs of the millimeter wave antenna near-field test can be well met.
Description
Technical field
The present invention relates to a kind of antenna plane near-field test scanister, can be used for general wave band, especially be fit to the millimeter wave antenna near-field test, is a kind of high precision, high efficiency antenna plane near-field test scanner.
Background technology
At present, along with the widespread use of the development of microwave technology, particularly millimeter wave, to the scanner in the antenna near-field test, have higher requirement: when guaranteeing hi-Fix, realize the quick response of speed.Because the wavelength (λ) of millimeter wave only has 1-10mm, and planar near field scanning sampled point spacing requires to satisfy≤λ/2 sampling rates, therefore, when scan area is large, need to obtain a large amount of, intensive sampled data, traditional stepping, Servo motor drive control no matter in bearing accuracy or aspect the sample rate response, all exist deficiency.
Adopt stepping or servomotor as driving, need to use the movement conversion mechanisms such as leading screw, guide rail, gear, tooth bar, reducer casing, the easy like this systematic error that causes, need to revise by modes such as interpolations, so that further improve precision and speed has increased difficulty, implement very difficult.
Adopt the stepper motor type of drive, because can not realize closed-loop control, improve bearing accuracy and be restricted.In addition, the stepper motor speed response is not high, and rapid starting/stopping is difficult to realize.
Adopt Servo motor drive control, although can realize closed-loop control, response speed is also high, needs the motion transfer process, so there is the back clearance problem, realizes hi-Fix control, and system constructing can more complicated.
Summary of the invention
The present invention adopts linear electric motors, directly drives load, makes rectilinear motion on X, the Y both direction, saves the throw-over gears such as leading screw, tooth bar, reducer casing, does not have the generation of back clearance, and mechanism is simple, and Installation and Debugging are convenient.
Native system uses closed-loop control, and bearing accuracy reaches ± 0.01mm, and repetitive positioning accuracy reaches ± 2 μ m.
Use linear electric motors, capability of fast response is obviously improved, and directions X speed reaches 0.7m/s, and acceleration reaches 6m/s
2, Y-direction speed reaches 0.7m/s, and acceleration reaches 10m/s
2
Description of drawings
Below in conjunction with accompanying drawing the present invention's design is further specified.
Fig. 1 is general structure axonometric drawing of the present invention.1, Y-axis linear motor stator electric, 2, P axle one dimension turntable, 3, P axle Zero-point switch, 4, Z axis linear platform, 5, the X-axis base, 6, P axle mouse dragon, 7, Y-axis pylon, 8, Y-axis guide rail, 9, the Y-axis fagging, 10, probe, 11, Y-axis line slideway mover, 12, X-axis linear motor stator electric, 13, the X-axis guide rail, 14, the X-axis linear motor rotor.
Fig. 2 is the scanner general structure rear view that the present invention designs.Wherein Ah a, Z axis load bracket, b, Z axis position measurement device.
Fig. 3 is the electric-control system block scheme.
Fig. 4 is precision control schematic diagram.
Embodiment
In Fig. 1, upper X-axis guide rail (13), the X linear motor stator electric (12) installed of X-axis base (5), upper Y-axis pylon (7), the Y-axis fagging (9) installed of X-axis linear motor rotor (14), dress Y-axis guide rail (8) Y-axis linear motor stator electric (1) on the Y-axis pylon, dress Z axis linear platform (4), P axle one dimension turntable (2) on the Y-axis linear motor rotor, dress P axle mouse cage (6) (mouse cage shape support) on the turntable is installed probe (10) on the mouse cage.
The course of work: X, Y linear electric motors can drive probe and do two dimensional motion under driver control, and P axle one dimension turntable also can rotate, and the data that probe measures can pass to PC in real time by cable and position signalling.
In Fig. 3, shown system's control block diagram, control system is by position measurement device, limit switch, Zero-point switch, the compositions such as D1 driver, computer and control software.Adopt close-loop control mode, use the D1 driver to obtain the grating feedback signal, parse actual position, according to path planning, determine setting time, realize X, the quick accurately location of Y-direction.In addition, by its distinctive compensation mechanism, by higher instrument (such as laser interferometer), set up the error compensation parameter list, embed in the driver with motion process automatic calibration precision.
Claims (3)
1. antenna plane near-field test scanner, can do the 3-D scanning test, it is characterized in that: use linear electric motors as X, Y motion driver part, electric rotating machine moves as Z, use D1 driver close-loop control mode to realize bearing accuracy and repetitive positioning accuracy requirement, can carry out plane, cylinder and spherical scanning function.
2. antenna plane near-field test scanner according to claim 1 is characterized in that, uses D1 driver close-loop control mode to realize bearing accuracy and repetitive positioning accuracy requirement, and the compensation mechanism realization by driver itself is to the control mode of systematic error.
3. antenna plane near-field test scanner according to claim 1 is characterized in that: Z axis load and counterweight form with plane of scanning motion vertical plane mirror image mode, the Y-axis pylon is realized fixing by Y-axis fagging version.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013102960557A CN103323685A (en) | 2013-07-16 | 2013-07-16 | Antenna plane near-field test scanner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013102960557A CN103323685A (en) | 2013-07-16 | 2013-07-16 | Antenna plane near-field test scanner |
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| CN103323685A true CN103323685A (en) | 2013-09-25 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698617A (en) * | 2014-01-06 | 2014-04-02 | 南京顺仕祥电子有限公司 | Antenna measuring space scanning plane error compensation method |
| CN104965129A (en) * | 2015-06-18 | 2015-10-07 | 四川莱源科技有限公司 | Single-probe near-field antenna test system |
| CN105182091A (en) * | 2015-03-24 | 2015-12-23 | 广州司南天线设计研究所有限公司 | Antenna pattern planar near-field scanning test equipment |
| CN105277745A (en) * | 2015-10-27 | 2016-01-27 | 北京无线电计量测试研究所 | High-precision radome electrical performance wide-angle automatic measurement turret |
| CN105510666A (en) * | 2015-12-18 | 2016-04-20 | 北京无线电计量测试研究所 | Spherical scanning frame |
| CN106338655A (en) * | 2016-08-23 | 2017-01-18 | 西安空间无线电技术研究所 | Method of correcting test error caused by planar near-field probe installation accuracy |
| CN106872804A (en) * | 2017-01-20 | 2017-06-20 | 中国电子科技集团公司第十四研究所 | A kind of desk-top planar near field scanning frame of high speed and super precision |
| CN107132425A (en) * | 2016-02-26 | 2017-09-05 | 富泰华工业（深圳）有限公司 | Antenna near-field test system |
| WO2018023929A1 (en) * | 2016-08-01 | 2018-02-08 | 深圳市新益技术有限公司 | Integrated antenna test system |
| CN108710033A (en) * | 2018-05-27 | 2018-10-26 | 南京艾文森电子科技有限公司 | A kind of low-cost and high-precision small scanning frame and control method |
| CN110501576A (en) * | 2019-08-28 | 2019-11-26 | 北京无线电计量测试研究所 | A kind of rectangular co-ordinate scanning support system and stitching measure method |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103698617A (en) * | 2014-01-06 | 2014-04-02 | 南京顺仕祥电子有限公司 | Antenna measuring space scanning plane error compensation method |
| CN105182091A (en) * | 2015-03-24 | 2015-12-23 | 广州司南天线设计研究所有限公司 | Antenna pattern planar near-field scanning test equipment |
| CN104965129A (en) * | 2015-06-18 | 2015-10-07 | 四川莱源科技有限公司 | Single-probe near-field antenna test system |
| CN105277745B (en) * | 2015-10-27 | 2018-06-22 | 北京无线电计量测试研究所 | A kind of high-precision antenna cover electrical property wide-angle automatic measurement turntable |
| CN105277745A (en) * | 2015-10-27 | 2016-01-27 | 北京无线电计量测试研究所 | High-precision radome electrical performance wide-angle automatic measurement turret |
| CN105510666A (en) * | 2015-12-18 | 2016-04-20 | 北京无线电计量测试研究所 | Spherical scanning frame |
| CN107132425A (en) * | 2016-02-26 | 2017-09-05 | 富泰华工业（深圳）有限公司 | Antenna near-field test system |
| WO2018023929A1 (en) * | 2016-08-01 | 2018-02-08 | 深圳市新益技术有限公司 | Integrated antenna test system |
| CN106338655A (en) * | 2016-08-23 | 2017-01-18 | 西安空间无线电技术研究所 | Method of correcting test error caused by planar near-field probe installation accuracy |
| CN106338655B (en) * | 2016-08-23 | 2018-10-09 | 西安空间无线电技术研究所 | Test error modification method caused by a kind of planar near-field probe installation accuracy |
| CN106872804A (en) * | 2017-01-20 | 2017-06-20 | 中国电子科技集团公司第十四研究所 | A kind of desk-top planar near field scanning frame of high speed and super precision |
| CN108710033A (en) * | 2018-05-27 | 2018-10-26 | 南京艾文森电子科技有限公司 | A kind of low-cost and high-precision small scanning frame and control method |
| CN110501576A (en) * | 2019-08-28 | 2019-11-26 | 北京无线电计量测试研究所 | A kind of rectangular co-ordinate scanning support system and stitching measure method |
| CN110501576B (en) * | 2019-08-28 | 2021-07-30 | 北京无线电计量测试研究所 | Rectangular coordinate scanning frame system and splicing measurement method |
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Application publication date: 20130925 |