Calibration device and calibration method for radio frequency homing-based semi-physical simulation system

A semi-physical simulation and radio frequency simulation technology, applied in the direction of electrical testing/monitoring, can solve the problem of inability to align the position of the column and the center calibration of the array, the deviation of the data from the real technical state of the system, and the inability to fully and truly reflect the radio frequency semi-physical simulation system technology Status and other problems, to achieve the effect of high calibration progress, convenient installation and convenient operation

Inactive Publication Date: 2015-04-15

GUIZHOU AEROSPACE INST OF MEASURING & TESTING TECH

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AI-Extracted Technical Summary

Problems solved by technology

[0006] (1) The self-test monitoring data of the RF simulation system comes from different feedback units, and there is distortion in data collection and transmission, so there is a certain deviation between the data and the real technical state of the system, which cannot fully and truly ref...

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Method used

(5) at last the data that upper computer receives utilizes calibration software to carry out data processing, realizes the calibration to radio frequency emulation angle position parameter.

As shown in Fig. 1 ~ 6, a kind of calibration device for the hardware-in-the-loop simulation system that radio frequency seeks, comprises radio frequency emulation turntable angular position calibration module, radio frequency emulation turntable angular rate calibration module, radio frequency array type target speaker position calibration module, the data information of the radio frequency simulation turntable angular position calibration module, the radio frequency simulation turntable angular rate calibration module and the radio frequency array target speaker position calibration module is transmitted to the host computer through the data acquisition device, and the angle of the radio frequency simulation turntable is transmitted through the three modules. The position data, angular rate data and radio frequency array target speaker position data are transmitted to the data acquisition device and displayed on the host computer. Through the data processing software of the host computer, each data can be calibrated to achieve convenient, fast and accurate calibration.

Described grating mounting seat comprises the grating ring flange 11 of installing grating ring 10 and the grating head flange 12 of grating head 9 installation, and grating head 9 adopts three reading heads, and described grating ring flange 11 is fixedly connected in core On the sha...

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Abstract

The invention discloses a calibration device and a calibration method for a radio frequency homing-based semi-physical simulation system. The calibration device comprises a radio frequency simulation turntable angular position calibration module, a radio frequency simulation turntable angular rate calibration module and a radio frequency array target loudspeaker position calibration module, wherein the data information of the radio frequency simulation turntable angular position calibration module, the radio frequency simulation turntable angular rate calibration module and the radio frequency array target loudspeaker position calibration module are transmitted to an upper computer through a data acquisition and transmission device. According to the calibration device and the calibration method, the radio frequency homing-based semi-physical simulation system is calibrated through the calibration device with the three modules, so that the problem that the calibration is easily distorted in the prior art is solved; calibration data are independent of a calibrated system; the credibility of the calibration data is improved; the technical state of a radio frequency simulation system is really reflected; the position and the center of a loudspeaker are calibrated through the loudspeaker position calibration module; calibration equipment is high in precision, convenient to mount and calibrate and simple in structure; the calibration method is simple, the data are reliable, and the efficiency is high.

Application Domain

Electric testing/monitoring

Technology Topic

Radio frequencyPhysics +4

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Examples

Experimental program(3)

Example Embodiment

[0041] Embodiment 1: The method for calibrating the angular position of the radio frequency simulation turntable, including a 23-sided prism and a photoelectric autocollimator with a resolution of 0.1 seconds, a radio frequency simulation turntable angular position calibration module, and the polyhedral prism is fixedly connected to the radio frequency. On the table surface of the simulation turntable, coaxial with the RF simulation turntable, the optical autocollimator reading head is aligned with the center of the polygonal prism mirror surface, fixed on the fixed support base, and connected with the data acquisition device connected with the upper computer. connected, the steps include the following:

[0042] (1) Align the autocollimator with the first side of the polyhedral prism, and record the reading of the autocollimator;

[0043] (2) According to the angle of the polyhedral prism, rotate the RF simulation turntable clockwise by a corresponding angle, and record the reading of the autocollimator;

[0044] (3) Repeat steps (1) and (2) to detect all faces of all polyhedral prisms, and record the autocollimator readings of the corresponding faces;

[0045] (4) When reaching the initial detection surface, rotate the RF simulation turntable counterclockwise to detect all the faces of the polyhedral prism, and record the corresponding autocollimator readings;

[0046] (5) Finally, the data received by the host computer is processed by the calibration software to realize the calibration of the RF simulation angular position parameters.

[0047] Before calibrating with the above method, it is necessary to find the center, and install the 23-sided prism and the test fixture on the table of the RF simulation turntable. Install a lever dial indicator on the test fixture, so that the head of the lever indicator is in contact with the inner hole of the 23-sided prism, record the indicated value of the lever indicator, rotate the RF simulation turntable, and record 0 degrees and 90 degrees respectively. , 180-degree, 270-degree lever dial indicator, using the diametric method to make the axis of the 23-sided prism coincide with the rotation axis of the turntable to be tested, and through the adjustment mechanism of the test fixture, the working surface of the 23-sided prism is adjusted. parallel to the test table.

Example Embodiment

[0048] Embodiment 2: The method for calibrating the angular rate of the radio frequency simulation turntable includes a circular ring grating, which includes a grating ring and a grating head, is installed on a grating mounting seat, and is connected to the table surface of the radio frequency simulation turntable. The head is aligned with the grating ring, and it is connected to the data acquisition device connected with the host computer. The host computer and the data acquisition device are connected through a wireless transmitting and receiving module. The steps include the following: when the radio frequency simulation turntable moves, the time base The circuit starts timing immediately, and at the same time, the angle measuring device records the rotation angle of the angular rate calibration device, records and analyzes the data through the data acquisition and processing system, and obtains the angular rate parameter index, which is compared with the angular rate parameter index input by the radio frequency simulation turntable to realize the accuracy of the calibration. Calibration of RF simulation turntable angular rate parameters.

[0049] The above method takes into account the wide rate range and high resolution of the RF simulation turntable, so choose a circular grating with a diameter of 229mm, the model is RESM20USA229, the circular grating interface device models are Si-NN-0100 and Si-NN-0040, resolution They are 0.2μm and 0.5μm respectively, and the circular grating reading head adopts SR050A.

[0050] The reading system of the grating head of the calibration device adopts the design of three reading heads. One pair of reading heads collects angle signals, and the other reading head realizes high-speed calibration, and the eccentricity error is reduced by double reading heads. Dual readheads compensate for the effects of static and dynamic bearing offsets, resulting in an overall installation error of ±2 seconds. The incremental signals of the dual readheads are combined together, which is like an independent high-precision grating for the controller, eliminating the eccentricity error, and the remaining error is only the scribe line error and the period error, both of which are very small. , the calibration device can achieve higher angle measurement accuracy.

[0051] The angular rate calibration of the calibration device adopts a fixed-angle timing method, the angle collects the moving angular position of the circular grating, and the time collects the time of the crystal oscillator. The key to the angular rate calibration is the synchronization problem. The synchronization signal is taken from a stable 100MHz crystal oscillator source (10 - 6 /sky).

[0052] Considering the convenience of using the calibration system, Advantech's PC/104 board is used for data processing, and the counting interface board of the goniometer system is also based on the PC/104 bus. Run test software and process test data.

Example Embodiment

[0053] Embodiment 3: The method for calibrating the position of the radio frequency array target speaker includes a Leica TCR1201 total station for 0.1 seconds, the lens of the total station is aimed at the target speaker, and it is connected to the data acquisition device connected with the host computer The steps include the following steps: by measuring the angle and distance of the array target speakers, recording the corresponding data, analyzing and processing the data received by the host computer, and obtaining the center of the array and the position and distance between the speakers. Angle relationship, to achieve the calibration of the RF array target.

[0054] The calibration device is calibrated by a metrology technical institution. The angle measurement error of the calibration device is 2 seconds, and the rate stability is up to 1×10 -6. Field tests are carried out in the RF simulation laboratory, and the calibration data analysis of the RF simulation system proves that the calibration device and the calibration method are suitable for the calibration of the RF simulation system.

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PUM

Property	Measurement	Unit
Diameter	229.0	mm
tensile		MPa
Particle size		Pa
strength	10

Description & Claims & Application Information

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Calibration device and calibration method for radio frequency homing-based semi-physical simulation system

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

Image

Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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