Antenna test method and test control system based on mechanical arm
A test method and technology of manipulators, which are applied in the direction of manipulators, antenna radiation patterns, program-controlled manipulators, etc., can solve the problems of not being able to maximize the flexibility of manipulators, accumulating position errors, and limiting application prospects, so as to avoid falling into Singularity, simple path, saving scanning time
Pending Publication Date: 2022-05-27
CHINA ELECTRONICS TECH GRP CORP NO 14 RES INST
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Problems solved by technology
[0003] However, some shortcomings of the multi-axis manipulator limit the application prospects of this technology to some extent.
For example, although the repeatability and movement precision of a multi-axis robotic arm is high, multiple steps will accumulate position errors
In addition, the position error generated by the multi-axis robot arm when the scanning path is turned will be larger than that of ordinary stepping
In addition to these defects, when the traditional scan frame-based scanning process is directly applied to the manipulator test system, it cannot maximize the flexible advantages of the manipulator in terms of scanning orientation and stepping.
Method used
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Embodiment 1
[0046] In an embodiment of the present invention, an antenna testing method and a testing control system based on a robotic arm are introduced by taking the near-field testing of an antenna through a robotic arm as an example.
[0047] like figure 1 As shown, the manipulator-based antenna test control system adopted in this embodiment mainly includes a multi-axis manipulator 1 , a test probe 2 , a test control module 9 and a vector network analyzer 8 . The test probe 2 is fixed on the wrist of the multi-axis manipulator 1 , and the antenna to be tested 3 is fixed to the antenna erection platform 5 through the antenna support platform 4 to be tested. The display system 7 is used to display information such as scanning paths. The display system 7 , the vector network analyzer 8 and the test control module are arranged in the test cabinet 6 .
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The invention belongs to the technical field of antennas and microwaves, and discloses an antenna test method and a test control system based on a mechanical arm, which are used for testing antenna performance. The method comprises the steps that a scanning range and a scanning surface are preset, and the position of a scanning center is determined through rough scanning; according to the amplitude and phase values recorded in the previous step, the scanning range is pre-estimated by comparing the amplitude and phase values with preset scanning range conditions; scanning for a circle along the boundary of the estimated scanning range, and if the amplitude and the phase read in the process of scanning for a circle meet preset scanning range conditions, obtaining a closed area; generating a rectangular scanning range capable of covering the closed area as a formal scanning range; automatically generating a concentric-square-shaped scanning path according to the rectangular scanning range; and scanning along a predetermined concentric-square-shaped scanning path. According to the invention, the accumulated position error of the antenna test based on the mechanical arm can be controlled within a certain range.
Description
technical field [0001] The invention belongs to the technical field of antennas and microwaves, and in particular relates to an antenna testing method and a testing control system based on a robotic arm. Background technique [0002] In recent years, with the rapid development of antenna technology and solid-state microwave devices, it has gradually become a reality for wireless communication and radar systems to move to the millimeter-wave frequency band and miniaturize them, which are used in airport security inspections, high-precision imaging and other fields. Antenna, as a transmitter and receiver of electromagnetic waves, is a key component in wireless communication and radar systems, and its performance plays a decisive role in the performance of the entire wireless system. Therefore, the evaluation of antenna performance, especially the evaluation of radiation characteristics represented by pattern test, has become an urgent research topic. In recent years, due to t...
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IPC IPC(8): G01R29/10B25J9/16
CPCG01R29/10B25J9/1679B25J9/1664
Inventor 马天野张金平邓晔李斌胡啸李晓峰
Owner CHINA ELECTRONICS TECH GRP CORP NO 14 RES INST