CN113467427A - Metering method and metering device of structure test control system - Google Patents
Metering method and metering device of structure test control system Download PDFInfo
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- CN113467427A CN113467427A CN202110797192.3A CN202110797192A CN113467427A CN 113467427 A CN113467427 A CN 113467427A CN 202110797192 A CN202110797192 A CN 202110797192A CN 113467427 A CN113467427 A CN 113467427A
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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
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/60—Testing or inspecting aircraft components or systems
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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
- G05B17/00—Systems involving the use of models or simulators of said systems
- G05B17/02—Systems involving the use of models or simulators of said systems electric
Abstract
The application provides a metering method of a structure test control system, which comprises the following steps: constructing a simulation model comprising a hydraulic actuating mechanism and a structural member; obtaining a control instruction of a structural test control system, and converting the control instruction to obtain control data; resolving the simulation model in real time according to the control data to obtain simulation data corresponding to the simulation model; and converting the simulation data to obtain feedback data of the simulation model under the control data, and comparing the control data of the structure test control system with the feedback data to further obtain a measurement calibration result of the structure test control system. According to the method, the virtual metering platform replaces the physical metering platform, the uncertainty of the physical platform is eliminated, the limitation of a field is avoided, the metering precision is improved, and meanwhile, the method brings great flexibility and convenience to the metering work.
Description
Technical Field
The application belongs to the technical field of test measurement, and particularly relates to a measurement calibration method and a measurement device of a structure test control system.
Background
In an aircraft structure test, a structure test control system is needed to control a force loading device, in order to ensure that an output value of the force loading device is consistent with a control value of the structure test control system, measurement calibration work is generally needed to be carried out on the test control system, and measurement calibration contents comprise force value error analysis and the like.
The measurement calibration of the current test control system is realized by building a physical measurement platform on site, as shown in fig. 1, the structural test control system 1 and the physical measurement platform 2 perform data interaction, and the measurement error of the structural test control system can be obtained by comparing the control value and the output value of the structural test control system 1 and the physical measurement platform 2. However, as the built physical metering platform may introduce more uncertain quantities, such as mechanical clearance, electromagnetic interference wire length, oil pressure, etc., the control value of the structural test control system 1 may be accurate, and the output value of the physical metering platform is inaccurate, thereby affecting the judgment of the metering value of the structural test control system 1. In addition, the physical metering platform is greatly limited by the field, and the arrangement and the metering of the structural test control system are influenced.
Disclosure of Invention
The present application is directed to a metering calibration method and a metering device for a structural test control system, so as to solve or reduce at least one of the problems in the related art.
On one hand, the technical scheme of the application is as follows: a method of metrology a structural test control system, the method comprising:
constructing a simulation model comprising a hydraulic actuating mechanism and a structural member;
obtaining a control instruction of a structural test control system, and converting the control instruction to obtain control data;
resolving the simulation model in real time according to the control data to obtain simulation data corresponding to the simulation model;
and converting the simulation data to obtain feedback data of the simulation model under the control data, and comparing the control data of the structure test control system with the feedback data to further obtain a measurement calibration result of the structure test control system.
Further, in the process of resolving the simulation model in real time according to the control data to obtain the simulation data of the simulation model, the simulation model is resolved in real time through a computing device comprising an FPGA module.
On the other hand, the technical scheme of the application is as follows: a metrology apparatus for a structural test control system, the system comprising:
the simulation calculation module is used for constructing a simulation model comprising a hydraulic actuating mechanism and a structural member;
the real-time resolving module is used for resolving the simulation model in real time according to the control data output by the conversion module to obtain simulation data corresponding to the simulation model;
the conversion module is used for obtaining a control instruction of the structure test control system, converting the control instruction to obtain control data, and converting the simulation data to obtain feedback data of the simulation model under the control data;
and comparing the control data of the structure test control system with the feedback data to obtain a measurement calibration result of the structure test control system.
Further, the real-time calculating module is a computing device with an FPGA module.
Further, the conversion module is implemented by a wheatstone bridge.
The method and the device provided by the application replace a physical metering platform through a virtual metering platform, modeling a hydraulic actuating mechanism and a structural part on the physical metering platform is written into a simulation computer, real-time calculation is carried out, a real-time calculating machine is in data interaction with a control system through a conversion interface, metering calibration of the control system is realized, the simulation computer, the model of the hydraulic actuating mechanism and the structural part and the real-time calculating machine form the virtual metering platform to replace the previous physical metering platform, the uncertainty of the physical platform is eliminated, the limitation of a site is avoided, the metering precision is improved, and meanwhile, greater flexibility and convenience are brought to metering work.
Drawings
In order to more clearly illustrate the technical solutions provided by the present application, the following briefly introduces the accompanying drawings. It is to be expressly understood that the drawings described below are only illustrative of some embodiments of the invention.
Fig. 1 is a schematic diagram of a connection between a structural test control system and a physical metering platform in the prior art.
Fig. 2 is a schematic diagram of the composition of a metering device of the structural test control system of the present application.
Fig. 3 is a schematic diagram of signal conversion according to an embodiment of the present application.
Fig. 4 is a schematic diagram of signal conditioning according to an embodiment of the present application.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application.
In order to reduce uncertain factors in a physical metering platform and effectively improve metering precision, the application provides a metering method of a structural test control system, the physical metering platform in the prior art is replaced by a virtual metering platform constructed by a modeling simulation technology and a real-time computing technology based on an FPGA (field programmable gate array), namely, a simulation computing module and a real-time computing module are introduced, a hydraulic actuating mechanism and a structural member on the physical metering platform are modeled and written into the simulation computing module, then the simulation computing module is downloaded to the real-time computing module and carries out real-time computing, and the real-time computing module interacts with the structural test control system through a conversion interface to realize metering calibration of the control system.
In order to make the process of the present application clearer, the following description is made in conjunction with the metering method and the metering system of the present application, and referring to fig. 2, the specific process of the present application is as follows:
and S1, introducing the simulation calculation module 10, running simulation software on the simulation calculation module 10, and constructing a simulation model of the hydraulic actuating mechanism and the structural member in the simulation software.
The simulation calculation module 10 may use a commercial workstation or a server to run the simulation modeling software, or use a personal PC computer to run the simulation modeling software.
In the embodiment, as a description of the present application, a hydraulic execution structure simulation model of an electro-hydraulic servo valve, an actuating cylinder, and the like and a reduced order simplified simulation model of a structural member such as a cantilever beam and the like are established on a software platform of the simulation computation module 10, and the simulation models include tests of relevant model parameters and the like.
And S2, sending the simulation model of the hydraulic actuator and the structural part to the real-time computing module 20.
In the present application, the real-time calculating module 20 selects a dedicated real-time computer, the real-time computer is configured with an FPGA (Field Programmable Gate Array) module, the computation of a special mathematical model or module in the simulation model is realized through the FPGA module, and the real-time simulation is completed by cooperating with a CPU of a general computer, so as to ensure that the step length of the simulation is consistent with the closed loop.
In the process of saving the simulation model to the real-time solution module by the simulation computer, the simulation model is first converted into machine identification code, such as C code, and then downloaded and saved to the real-time solution module 20.
And S3, the real-time calculating module 20 carries out real-time simulation calculation on the simulation model according to the simulation model and the set real-time beat.
And S4, the real-time calculating module 20 interacts with the structural test control system 40 through the conversion module 30, so as to realize the measurement calibration of the structural test control system 40.
The conversion module 30 is used for completing signal conditioning, realizing the butt joint of the real-time calculation module 20 and the structural control system 40, and simultaneously realizing zero adjustment and shunt calibration.
Considering that the input and output of the real-time computing module 20 are all analog signals of ± 10V, the input of the structural test control system 40 is ± 40mA, and the output is ± 10V, the conversion module 30 is required to realize the conversion of the signals, and simultaneously, the signal conditioning is also realized.
As shown in fig. 3, the conversion module 30 converts the ± 40mA signal into the ± 10V signal in the process of the structural test control system 40 transmitting the control data to the real-time solution module 20. The process of sending the feedback data to the structural test control system 40 by the real-time calculating module 20 is opposite to the above process, and the conversion module 30 converts the +/-10V signal into a +/-40 mA input signal which can be accepted by the structural test control system 40.
In one embodiment of the present application, signal conditioning is achieved by a wheatstone bridge, while achieving both nulling and shunt calibration of the signal, as shown in fig. 4.
The structural test control system 40 receives the command, forms valve current, forms voltage within a range of +/-10V through the conversion interface, inputs the voltage into the real-time calculation module, the real-time calculation module receives signals, starts calculation by using a simulation model provided by the simulation calculation module, feeds simulation data back to the structural test control system 40 in real time, reflects control characteristics and realizes metering and calibration of the structural test control system 40.
Compared with the prior art, the method can save a physical metering platform arranged on the site, reduce the occupation of the site, reduce the precision problem caused by the inherent defects of the physical metering platform, improve the metering precision and finally improve the metering work efficiency of the structural test control system.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (5)
1. A method of metrology a structural test control system, the method comprising:
constructing a simulation model comprising a hydraulic actuating mechanism and a structural member;
obtaining a control instruction of a structural test control system, and converting the control instruction to obtain control data;
resolving the simulation model in real time according to the control data to obtain simulation data corresponding to the simulation model;
and converting the simulation data to obtain feedback data of the simulation model under the control data, and comparing the control data of the structure test control system with the feedback data to further obtain a measurement calibration result of the structure test control system.
2. The metering method of a structural test control system according to claim 1, wherein in the process of obtaining the simulation data of the simulation model by real-time solving the simulation model according to the control data, real-time solving of the simulation model is completed by a computing device including an FPGA module.
3. A metering device for a structural test control system, the system comprising:
the simulation calculation module is used for constructing a simulation model comprising a hydraulic actuating mechanism and a structural member;
the real-time resolving module is used for resolving the simulation model in real time according to the control data output by the conversion module to obtain simulation data corresponding to the simulation model;
the conversion module is used for obtaining a control instruction of the structure test control system, converting the control instruction to obtain control data, and converting the simulation data to obtain feedback data of the simulation model under the control data;
and comparing the control data of the structure test control system with the feedback data to obtain a measurement calibration result of the structure test control system.
4. The metrology device of claim 3 wherein said real time solution module is a computing device comprising an FPGA module.
5. The metrology device of claim 3 wherein said conversion module is implemented by a Wheatstone bridge.
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| CN106295808A (en) * | 2016-07-13 | 2017-01-04 | 北京航空航天大学 | Aircraft embedded real-time diagnosis reasoning algorithm test method |
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2021
- 2021-07-14 CN CN202110797192.3A patent/CN113467427A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101544281A (en) * | 2009-04-13 | 2009-09-30 | 苏州同元软控信息技术有限公司 | Semi-physical real-time simulation system of airplane reverse thrust hydraulic unit |
| JP2012014584A (en) * | 2010-07-02 | 2012-01-19 | Toshiba Mitsubishi-Electric Industrial System Corp | Test apparatus for plant control apparatus |
| CN103336441A (en) * | 2013-06-21 | 2013-10-02 | 苏州同元软控信息技术有限公司 | Semi-physical real-time simulation system for hydraulic undercarriage of airplane |
| CN103336442A (en) * | 2013-07-04 | 2013-10-02 | 南昌航空大学 | Semi-physical simulation method of aircraft electric system based on AGENT modeling technique |
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