CN113050561A - Dynamic signal analysis control system - Google Patents
Dynamic signal analysis control system Download PDFInfo
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- CN113050561A CN113050561A CN202110264299.1A CN202110264299A CN113050561A CN 113050561 A CN113050561 A CN 113050561A CN 202110264299 A CN202110264299 A CN 202110264299A CN 113050561 A CN113050561 A CN 113050561A
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- 238000012360 testing method Methods 0.000 claims abstract description 63
- 239000011159 matrix material Substances 0.000 claims abstract description 26
- 238000001228 spectrum Methods 0.000 claims abstract description 8
- 235000014676 Phragmites communis Nutrition 0.000 claims description 3
- 230000008859 change Effects 0.000 description 6
- RZVHIXYEVGDQDX-UHFFFAOYSA-N 9,10-anthraquinone Chemical compound C1=CC=C2C(=O)C3=CC=CC=C3C(=O)C2=C1 RZVHIXYEVGDQDX-UHFFFAOYSA-N 0.000 description 5
- 238000011056 performance test Methods 0.000 description 4
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- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000013100 final test Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
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- 238000012552 review Methods 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/41865—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by job scheduling, process planning, material flow
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/32—Operator till task planning
- G05B2219/32252—Scheduling production, machining, job shop
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention discloses a dynamic signal analysis control system, which comprises a dynamic signal analyzer, wherein the dynamic signal analyzer is connected with an upper computer through a GPIB board card; the dynamic signal analyzer is integrated by two four-channel spectrum analyzers and a matrix switching box. The dynamic signal analysis control system solves the problems that a large amount of manual repeated work is needed in the traditional frequency sweep test, and test items cannot be automatically and continuously executed.
Description
Technical Field
The invention belongs to the technical field of flight control design, and particularly relates to a dynamic signal analysis control system.
Background
The sweep generator is used as an important testing instrument and is widely applied to the fields of aviation, aerospace, military industry, industrial control and the like. For example, an onboard ground test of the flight control system is a critical test which must be performed before the aircraft first flies, and a sweep generator is necessary equipment in the test. In the onboard ground test of the flight control system, a sweep generator is required to be used for completing a plurality of tests such as an open-loop stable reserve test of the fly-by-wire system, a closed-loop frequency response performance test of the fly-by-wire system, a dynamic performance test of a mechanical control system, a stable reserve test of an automatic flight control system, a structural modal coupling test and the like.
However, in the conventional frequency sweep test, a product to be tested needs to be manually replaced; for each type of product to be tested, various test parameters need to be manually input, and the automatic continuous execution cannot be realized; the test result needs to be recorded manually, so that the review and secondary calculation are inconvenient. The above operations all require a large amount of manual repeated work, and the test items cannot be automatically and continuously executed, i.e. the tandem and automatic selection of a plurality of sets of products to be tested cannot be realized, and the automatic input, automatic test and automatic data recording of the characteristic parameters of the products to be tested cannot be realized.
Disclosure of Invention
The invention aims to provide a dynamic signal analysis control system, which solves the problems that a large amount of manual repeated work is required in the traditional frequency sweep test, and test items cannot be automatically and continuously executed.
The invention adopts the technical scheme that the dynamic signal analysis control system comprises a dynamic signal analyzer, wherein the dynamic signal analyzer is connected with an upper computer through a GPIB board card; the dynamic signal analyzer is integrated by two four-channel spectrum analyzers and a matrix switching box.
The invention is also characterized in that:
the matrix switching box comprises a shell, wherein a PCB is arranged in the shell, a main control chip and a switch are integrated on the PCB, and a power line, a serial port line, a signal input line, a signal output line and an LED lamp group are arranged on the shell and are respectively connected with the PCB;
the serial port line is connected with an upper computer, the signal output line is connected with the dynamic signal analyzer, and the signal input line is connected with a signal line of the piece to be tested.
The change over switch of matrix switching box is 8 groups of 4 and selects 1 change over switch, and change over switch includes the tongue tube relay, and every group is connected in parallel by 4 tongue tube relays and is constituteed.
The model of the main control chip is 10M08SE144I 7N.
The LED lamp groups are correspondingly connected with the signal channels of the dynamic signal analyzer one by one.
The GPIB board card is a PCI-GPIB type functional board card of NI.
The dynamic signal analyzer comprises a parameter configuration module, an equipment self-checking module, a system testing module and a data playback module.
The invention has the beneficial effects that:
the invention relates to a dynamic signal analysis control system, which is characterized in that a product to be tested is subjected to tandem connection through a self-developed matrix switching box, and functions of switching, parameter input, test execution, test result recording analysis and the like of the product to be tested are realized through a test program; according to the dynamic signal analysis control system, one host can control a plurality of dynamic signal analyzers through the GPIB board card, single machine extension can be realized, and data transmission efficiency can be improved through data interaction of the GPIB bus; according to the dynamic signal analysis control system, the existing channel is expanded in multiples through the matrix switching box, the automatic test flow of the system can be automatically executed, and the test is simpler and more efficient.
Drawings
FIG. 1 is a schematic diagram of a dynamic signal analysis control system of the present invention;
FIG. 2 is a schematic diagram of a dynamic signal analyzer in a dynamic signal analysis control system according to the present invention;
fig. 3 is a schematic diagram of switching of a matrix switching box in a dynamic signal analysis control system according to the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The first dynamic signal analysis control system of the present invention, as shown in fig. 1, includes a dynamic signal analyzer, the dynamic signal analyzer is connected to an upper computer through a GPIB board; the dynamic signal analyzer is integrated by two four-channel spectrum analyzers and a matrix switching box.
Two/four channel frequency response range of the dynamic signal analyzer: 102.4kHz 1channel, 51.2kHz 2channel, 25.6kHz 4 channel; dynamic range: 90 dB; precision: 0.15 dB; channel error: plus or minus 0.04dB and plus or minus 0.5 range; real-time bandwidth: 25.6kHz per channel; capture time is greater than 6 samples; signal source types can be generated: random signals, pulsed signals, periodic signals, sinusoidal signals, noise signals, swept signals, and the like.
Preferably, the matrix switching box comprises a shell, a PCB is arranged in the shell, a main control chip and a switch are integrated on the PCB, and a power line, a serial port line, a signal input line, a signal output line and an LED lamp group are arranged on the shell and are respectively connected with the PCB;
the serial port line is connected with an upper computer, the signal output line is connected with the dynamic signal analyzer, and the signal input line is connected with a signal line of the piece to be tested.
Preferably, the model of the main control chip is 10M08SE144I 7N.
Preferably, the change over switch of matrix switching box is 8 groups of 4-to-1 change over switches, and the change over switch includes the tongue tube relay, and every group is parallelly connected by 4 tongue tube relays and is constituteed. As shown in fig. 3.
Preferably, the LED lamp groups are connected with the signal channels of the dynamic signal analyzer in a one-to-one correspondence manner.
Preferably, the GPIB board is a PCI-GPIB type functional board of NI. Including a 3.3VDC voltage, 120Ma, and is internally powered; compliant with the IEEE488 standard; the maximum cable length is 4 m; operating temperature: not higher than 50 ℃;
preferably, the dynamic signal analyzer employs LABVIEW 2015 graphical programming software, including parameter configuration, device self-test, system test and data playback modules:
a parameter configuration module: various parameter configurations required by system testing are completed, so that a user can test more conveniently and more flexibly; parameters such as signal type, signal amplitude, start-stop frequency, scanning mode and the like of the source output of the dynamic signal analyzer can be set through the source output setting function;
equipment self-checking module: the dynamic signal analyzer and the GPIB board can be self-checked, so that a user can know the running state of the test system conveniently; the self-checking item is optional, if the system only has one dynamic signal analyzer, one dynamic signal analyzer can be set for self-checking, and if the system is provided with two dynamic signal analyzers, the self-checking of the two dynamic signal analyzers can be supported for convenience and later expansion; the system can automatically carry out self-checking on a dynamic signal analyzer and a GPIB board card in a test system, a self-checking result is displayed in a parallel table, and if the self-checking fails, error information is displayed in an error information frame;
a system test module: the final test of the tested equipment is completed through a system test, and the system test function comprises displaying test data, setting test parameters and recording test results; automatically setting drawing scales of X and Y axes, and realizing simultaneous display of a plurality of curves;
a data playback module: for the recorded data, the playback and analysis of the process data can be realized by opening the corresponding file during later analysis; the recorded signals can be played back, a corresponding file path is selected to start playing back, the playback process is displayed through a waveform chart, and the dynamic process of the signals can be observed; the data playback can realize the simultaneous display of a plurality of curves, and a channel required to be displayed can be selected through a channel selection button; the data playback interface is provided with two cursors, and displays the difference between the two cursors in real time, so that a user can calculate and analyze data conveniently.
The invention relates to a dynamic signal analysis control system, which has the following main components:
dynamic signal analyzer: the frequency measurement range of the frequency spectrum analyzer is from near DC to slightly more than 100KHz, and the frequency spectrum analyzer can provide measurement of frequency spectrum, network, time domain and amplitude domain; the working principle is shown in figure 2;
matrix switching box: the intelligent switch is mainly used for realizing the expansion and switching control of ports, a MAX10 FPGA chip of Intel corporation is used as a main control chip, a reed switch relay is selected as a change-over switch, an RS422/RS485 bus is used as a control interface, an ADM2582E isolation type 422/485 level converter is adopted for level conversion, and the control of an 8-channel 4-to-1 change-over switch is realized through program control of system software, and specifically the intelligent switch is as follows: the system software sends an instruction to the matrix switching box through a serial port according to a preset communication protocol so as to realize the control of the 8-channel 4-to-1 selector switch in the matrix switching box; as shown in fig. 3.
The invention relates to a dynamic signal analysis control system, which has the working principle that:
two four-channel spectrum analyzers and a matrix switching box are integrated into a set of dynamic signal analyzer, a GPIB board card is inserted into a host computer slot, and the dynamic signal analyzer is connected to the GPIB board card through a GPIB bus to realize the communication between the host computer and the dynamic signal analyzer. The upper computer is communicated with the matrix switching box through serial port lines. And the excitation output of the dynamic signal analyzer is connected to the matrix switching box to be used as the output of the matrix switching box, the signal wire of the piece to be tested is connected to the matrix switching box to be used as the input of the matrix switching box, and the signal output wire is connected with the dynamic signal analyzer and is used for testing the dynamic signal analysis system.
A tester can operate and control the dynamic signal analyzer through the upper computer human-computer interaction software to complete the frequency sweep test and data recording, the system can control 32 test channels and complete continuous tests of multiple sets of different products to be tested at most, the dynamic signal analysis software can complete the setting of the amplitude and frequency of the channel signals of the frequency sweep analyzer, display a response curve and store test data.
In addition, the dynamic signal analysis control system is designed with a standard Ethernet interface, can be connected with a remote test management computer through the Ethernet, receives a test instruction of the test management computer, completes a test and reports test data, and realizes remote test control and automatic test of a product to be tested.
The dynamic signal analyzer is connected with the matrix switching box, each path of spectrum analysis channel can be expanded, and the switching of the tested piece is realized through disconnection of the matrix switching box. The system integrates various test classes including test flow modes, matrix switching box disconnection, test parameter movement and the like under the classes so as to be continuously and automatically executed.
When the product to be tested is required to be tested, the system can automatically select the matrix box connection, the test flow and the corresponding parameters according to the product to be tested so as to complete parameter setting, and sends an instruction to the dynamic signal analyzer; at the moment, the system detects whether the test is finished or not and stores the test result; and when the test is finished, switching to the next test. The flows of manual plugging and unplugging, test piece switching, test parameter input and the like are omitted, and automatic test execution is realized.
The dynamic signal analysis control system provided by the invention has completed a plurality of tests such as an open-loop stable reserve test of the fly-by-wire system, a closed-loop frequency response performance test of the fly-by-wire system, a dynamic performance test of a mechanical control system, a stable reserve test of an automatic flight control system, a structural modal coupling test and the like.
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| CN202110264299.1A CN113050561B (en) | 2021-03-11 | 2021-03-11 | Dynamic signal analysis control system |
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| CN202110264299.1A CN113050561B (en) | 2021-03-11 | 2021-03-11 | Dynamic signal analysis control system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2492883Y (en) * | 2000-09-06 | 2002-05-22 | 中国科学院光电技术研究所 | Dynamic signal analyzer |
| CN106527401A (en) * | 2016-11-30 | 2017-03-22 | 中国航空工业集团公司沈阳飞机设计研究所 | Flight control test automated testing system |
| CN106546839A (en) * | 2016-09-28 | 2017-03-29 | 西安航天计量测试研究所 | Attitude control engine ground checkout equipment debugs test system and method automatically |
| CN106773791A (en) * | 2017-01-16 | 2017-05-31 | 万微微 | A kind of flight control system experimental rig |
| CN109634261A (en) * | 2018-12-24 | 2019-04-16 | 中国航空工业集团公司西安飞机设计研究所 | Automatic identification pilot system state and the system and method tested |
-
2021
- 2021-03-11 CN CN202110264299.1A patent/CN113050561B/en active Active
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| CN2492883Y (en) * | 2000-09-06 | 2002-05-22 | 中国科学院光电技术研究所 | Dynamic signal analyzer |
| CN106546839A (en) * | 2016-09-28 | 2017-03-29 | 西安航天计量测试研究所 | Attitude control engine ground checkout equipment debugs test system and method automatically |
| CN106527401A (en) * | 2016-11-30 | 2017-03-22 | 中国航空工业集团公司沈阳飞机设计研究所 | Flight control test automated testing system |
| CN106773791A (en) * | 2017-01-16 | 2017-05-31 | 万微微 | A kind of flight control system experimental rig |
| CN109634261A (en) * | 2018-12-24 | 2019-04-16 | 中国航空工业集团公司西安飞机设计研究所 | Automatic identification pilot system state and the system and method tested |
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