KR101354002B1 - Computer-readable recording medium with stability and control flight test analysis program using matlab - Google Patents

Abstract

The present invention relates to an aircraft flight test result analysis program using MATLAB that can increase user convenience, improve flight test result analysis and data processing capability.
As one embodiment for realizing this, the present invention provides a computer-readable recording medium which records an aircraft pilot stability flight test analysis program, which is controlled on a computer screen using a MATLAB graphical user interface (MATLAB GUI). panel control), the control panel view comprising: a file control window for selecting a file to be analyzed; A test information window for inputting at least one of aircraft number information, test number information, performance number information, and performance date information; A time slicing window for inputting a start time and an end time of a file to be analyzed to cut out unnecessary portions from flight test raw data and to store only portions necessary for flight test analysis; An i-lead time expression window that supports displaying an i-lead time when graphing flight test analysis results; A plot matrix window for displaying flight test analysis results in various types of plot matrices according to the maneuver of the aircraft; Before handling flight test results in various types of plot matrices according to the maneuver of the aircraft, the axis handling window supports setting the variable values of the axes for each graph represented in the various types of plot matrices. ; And neutral frequencies, damping ratios, initial displacements, initial velocity, start time, and end inputs required for qualitative analysis during the flight test. Provided is a computer readable recording medium having recorded thereon an aircraft pilot stability flight test analysis program, wherein a secondary system input window is provided to support input of a finish time.

Description

COMPUTER-READABLE RECORDING MEDIUM WITH STABILITY AND CONTROL FLIGHT TEST ANALYSIS PROGRAM USING MATLAB}

The present invention relates to an aircraft pilot stability flight test analysis program, and more particularly, to an aircraft flight test result analysis program using MATLAB which can increase user convenience and improve flight test result analysis and data processing capability.

The KC-100 is a 300-horsepower four-seater single-piston engine that is being developed with the goal of signing a Bilateral Aviation Safety Agreement (BASA) with the United States. The final confirmed aircraft shape is shown in FIG.

The KC-100 aircraft is classified as KAS Part 23, the national technical standards for N, and FAR Part 23 of the Federal Aviaiton Administration (FAA), in accordance with KAS Part 21, the national aircraft type certification certification procedure. Type certification is required, and various types of flight tests are planned to demonstrate the flight characteristics requirements of KAS Part 23 and FAR Part 23. In particular, flight tests in the field of pilot stability account for more than a half of the total development and certification flight test soti as it is a field that demonstrates flight characteristics of aircraft.

Flight test results generate a large amount of data from various measurement sensors, and it takes a lot of time and effort to identify phenomena through data processing and analysis and to obtain meaningful analysis results. However, during the actual flight test, it is difficult to have enough time to analyze these flight test results.

Accordingly, in the field of engineering, visualization efforts to understand the analysis and test results more quickly and easily have been continuously studied. NASA Langley Research Center in the US developed LiveView3D S / W to apply real-time wind tunnel test data visualization, and SimGraph S / W was developed and used for flight simulation.

In general, the analysis of flight test results starts after the flight test is performed, and the analysis starts from the classification of meaningful areas in the entire flight test data. Since then, flight stability results have been analyzed and compiled in a manner appropriate to each subject of the pilot stability flight test, but there are not many analysis tools for a series of tasks. In the field of pilot stability, various types of analysis methods are applied to each flight test subject, and for this purpose, all the subjects cannot be analyzed by one analysis tool alone. As the aging and S / W platforms are UNIX, additional work is required to organize and process flight test analysis results.

The present invention has been made in view of the above-described points, and an object of the present invention is to analyze flight test results that can conveniently and efficiently perform the entire process from data cleansing to data analysis results for flight test result analysis. It's about providing the program.

In order to achieve the above object of the present invention, a preferred embodiment of the present invention is a computer-readable recording medium which records an aircraft pilot stability flight test analysis program, wherein the program is a computer screen using a MATLAB graphical user interface (MATLAB GUI). A control panel view provided on the control panel, the control panel view comprising: a file control window for selecting a file to be analyzed; A test information window for inputting at least one of aircraft number information, test number information, performance number information, and performance date information; A time slicing window for inputting a start time and an end time of a file to be analyzed to cut out unnecessary portions from flight test raw data and to store only portions necessary for flight test analysis; An i-lead time expression window that supports displaying an i-lead time when graphing flight test analysis results; A plot matrix window for displaying flight test analysis results in various types of plot matrices according to the maneuver of the aircraft; Before handling flight test results in various types of plot matrices according to the maneuver of the aircraft, the axis handling window supports setting the variable values of the axes for each graph represented in the various types of plot matrices. ; And neutral frequencies, damping ratios, initial displacements, initial velocity, start time, and end inputs required for qualitative analysis during the flight test. Provided is a computer readable recording medium having recorded thereon an aircraft pilot stability flight test analysis program, wherein a secondary system input window is provided to support input of a finish time.

According to a preferred embodiment, the time slicing window may further support an item for selecting whether a file to be analyzed is a single file or a multi file.

According to a preferred embodiment, the program assists in providing another function selection window on the graph window representing the flight test analysis result, wherein the another function selection window is located at one or more desired points of the graph shown in the graph window. An evaluation item to assist in reading the values of? A delete item for supporting deletion of an unnecessary part of the values shown in the graph window; A minimum / maximum / average measurement item for supporting the automatic display of the minimum / maximum / average value of the graph displayed in the graph window; A slope measurement item that helps to find and automatically plot a slope of a graph displayed in the graph window; To display information on the neutral frequency, the attenuation ratio, the initial displacement, the initial velocity, the start time, and the end time input through the secondary system input window on a graph displayed in the graph window. 2nd order system item; A zoom item for supporting a graph displayed in the graph window on an X axis (horizontal axis), a Y axis (vertical axis), or an X-Y axis simultaneously; A replot item for reconstructing a graph displayed in the graph window based on the start time and the end time input through the time slicing window; Send to CSV item to support data storage in the form of a CSV file based on the start time and the end time input through the time slicing window; And an item to send to a picture for supporting a graph displayed in the graph window as a picture file.

According to a preferred embodiment, when the selection signal for the measurement item is generated, the program may support displaying a plurality of point values through Alt + Click on the graph displayed in the graph window. .

According to the present invention, it is possible to increase the user's convenience due to the convenient GUI screen configuration, and to facilitate the analysis by flight test subjects by applying a variety of plot forms (plot form).

In addition, according to the present invention, not only the basic data evaluation (data evaluation), but also the stability and stability during the analysis, and can also implement a slicing (slicing) function to cut out the desired section.

1 is a view schematically showing the appearance of a conventional KC-100 aircraft.
Figure 2 is a schematic view showing one form of a control panel view (control panel view) provided by the aircraft pilot stability flight test analysis program according to the present invention.
3 is a schematic representation of a graph of flight test results in the form of a 2 × 5 matrix provided by a plot matrix window.
Figure 4 is a view for explaining the main functions of the aircraft pilot stability flight test analysis program according to the present invention.
5 is a view for explaining the evaluation (evaluation) function of the main functions of the aircraft pilot stability flight test analysis program according to the present invention.
Figure 6 is a view for explaining the minimum / maximum / average value search function of the main functions of the aircraft pilot stability flight test analysis program according to the present invention.
Figure 7 is a view for explaining the slope (slope) floating function of the main function of the aircraft pilot stability flight test analysis program according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described herein are set forth to assist in understanding the present invention and are not intended to limit the scope of the present invention. As will be apparent from the following description, the present invention is mainly applied for the analysis of flight stability flight test of KC-100 aircraft, but may be applied to any other aircraft as long as the purpose of the flight stability flight test analysis of the aircraft. That is, hereinafter, the program mainly applied to the KC-100 aircraft will be described by way of example, but the present invention is not limited thereto.

In addition, in the present specification, after first describing the development requirements of the KC-100 aircraft flight stability flight test analysis program (Flight Test Analysis Software for S & C Test; sometimes referred to as FASST), aircraft flight stability according to the present invention The main GUI screen and main functions of the flight test analysis program will be explained in detail.

[Requirement for Development of Flight Test Result Analysis Program]

Existing flight test result analysis program is limited to equipment aging and analysis of specific aircraft flight test results.In case of T-50, it is not suitable for use as a tool for analyzing KC-100 flight test results due to differences in requirements and test types. Do. Therefore, the necessity of developing a new analysis program to analyze the flight stability test results of KC-100 aircraft was required. In addition, the user's convenience was increased to analyze flight test results, improve data processing capability, and require reliability, expandability, and development convenience within a limited development period. In consideration of these requirements, the present inventors developed using MATLAB, and constructed a user environment using the GUI of MATLAB. In the menu configuration of the program, the program screen is configured to recognize intuitive menus and information necessary for the user to work at a glance.

The version of MATLAB used in the development of the aircraft pilot stability flight test analysis program according to the present invention is 7.11.0.584 (R2010b).

There are two main ways to write a MATLAB GUI. The first method is to use GUIDE to write according to the defined format of MATLAB, and the second is to programmatically code the GUI directly using the GUI. While GUI configuration method using GUIDE does not deviate much from the GUI set by the initial user, Programmatically GUI method can modify various GUI forms such as easy and fast configuration of various matrixes of flight test result charts. It has the advantage of being able to. The aircraft pilot stability flight test analysis program according to the present invention has developed a frame of the program in the latter manner.

[Main screen configuration of the flight control stability flight test analysis program according to the present invention]

2 is a view showing a control panel view (control panel view) 10 provided by the aircraft pilot stability flight test analysis program according to the present invention. According to a preferred embodiment, the control panel view 10 is configured to be presented on a computer screen using a MATLAB graphical user interface (MATLAB GUI).

Referring to FIG. 2, the control panel view 10 provided by the aircraft pilot stability flight test analysis program according to the present invention includes: a file control window 110 for selecting a file to be analyzed; A test information window 120 for inputting at least one of aircraft number information, test number information, performance number information, and performance date information; A time slicing window 130 for inputting a start time and an end time of the file to be analyzed to cut out unnecessary portions from flight test raw data and to store only portions necessary for flight test analysis; An i-lead time expression window 140 that supports displaying an i-lead time when displaying a flight test analysis result; A plot matrix window 150 for supporting flight test analysis results in various types of plot matrices according to the maneuver of the aircraft; Before handling flight test results in various types of plot matrices according to the maneuver of the aircraft, the axis handling window supports setting the variable values of the axes for each graph represented in the various types of plot matrices. 160; And neutral frequencies, damping ratios, initial displacements, initial velocity, start time, and end inputs required for qualitative analysis during the flight test. A secondary system input window 170 is included to support the input of a finish time.

The file control window 110 is where the file to be analyzed is displayed. The user may select one file or several files as an analysis target file through the file control window 110, and an incorrectly selected file may be deleted. It is also possible to plot multiple charts simultaneously on one chart.

The test information window 120 is a window for inputting information about a flight test. For example, the user may input the aircraft number, the test number, the execution number, the execution date, etc. through the test information window 120, and the inputted values are displayed at the top of the chart so that when the analysis result is determined by which aircraft Allows you to verify whether the test was performed.

Time slicing window 130 is responsible for the function to cut out the unnecessary parts from the flight test raw data (raw data) and save only the parts necessary for the flight test analysis as a file, the aircraft pilot stability flight test analysis program according to the present invention The reason for this support is that the flight test raw data needs to be screened because it contains the parts to be analyzed and the parts that are not needed for analysis. To this end, the time slicing window 130 supports items 131 and 132 that allow the user to select whether the file to be analyzed is a single file or a multi file, and also the start time and end time of the file. It supports the items (133, 134) that can be entered. In addition, when receiving a single file selection signal from the user, the time slicing window 130 restores the file (single file) to be analyzed as one file corresponding to the start time and the end time selected through the item. . In addition, when receiving the multi-file selection signal from the user, the time slicing window 130 restores the file (multi file) to be analyzed as one file corresponding to the start time and the end time selected through the item. .

When the flight test results are displayed on the chart, the I League time expression window 140 displays the IRIG time so that the actual flight time is recorded at the same time as the flight test during time slicing. It provides a function that allows checking the conformity with the strip chart, etc., and the reason why the flight control stability flight test analysis program according to the present invention supports such a function is, in the actual flight test situation, flight test This is because the time recorded at the same time as the data is recorded in IRIG time, not local time.

Plot matrix window 150 provides a function to support the flight test analysis results, can be represented in various types of plot matrix (plot matrix) according to the maneuver of the aircraft, aircraft flight stability flight test analysis program according to the present invention The reason for supporting this function is that the flight test analysis results can be represented by various types of plot matrices according to the maneuver of the aircraft, so that users can simultaneously display these different types of (multiple) plot matrices on one screen. This is to make sure.

According to a preferred embodiment, the plot matrix window 150 may support to display the flight test results in a total of six forms from 1 × 1 to 2 × 5, and FIG. 3 is in a 2 × 5 matrix form. An example showing the graph is shown.

The axis handling window 160 is where to set which variable values are plotted on each axis before displaying the flight test result graph in the plot matrix.

According to a preferred embodiment, the axis handling window 160 may be configured to read the header value corresponding to the variable name in each flight test raw data column so that the raw data and the header value match. The reason for this configuration is to prevent the case where the data is changed when the header value is stored in advance and the header value and the data are inconsistent.

The secondary system input window 170 shows the six inputs required for qualitative analysis during the longitudinal test during the flight test: neutral frequency, damping ratio, initial displacement, and initial velocity. ), The start time and finish time can be entered. The above six input values input through the secondary system input window 170 are the damping values in the flight test analysis such as ① dutch roll ② long period p ③ short period It is used to find the value of and the neutral frequency.

[Main Functions of Aircraft Steering Stability Flight Test Analysis Program]

4 is a view for explaining the main functions of the aircraft pilot stability flight test analysis program according to the present invention. The main functions provided by the aircraft pilot stability flight test analysis program according to the present invention can be summarized into a total of thirteen functions. According to a preferred embodiment, the thirteen major functions are graph windows showing the results of the flight test analysis. 20) may be displayed through the items 301 to 313 through the function selection window 30 above.

Referring to FIG. 4, the aircraft pilot stability flight test analysis program according to the present invention reads values at one or more desired points of the graph 21 shown in the graph window 20 through the function selection window 30. An evaluation item 301 which assists to make it possible; A delete item 302 which supports deleting an unnecessary part of the values shown in the graph window 20; Maximum / minimum / average measurement items 303 to 305 for supporting the automatic display of the maximum / minimum / average value of the graph 21 shown in the graph window 20; A slope measurement item 306 for assisting in finding and automatically plotting the slope of the graph 21 shown in the graph window 20; Information about the neutral frequency, the damping ratio, the initial displacement, the initial velocity, the start time, and the end time input through the secondary system input window 170 (see FIG. 2) is displayed on the graph 21 shown in the graph window 20. A second order system item 307, which supports to do so; Zoom items 308 to 310 that support to enlarge the graph 21 shown in the graph window 20 on the X axis (horizontal axis), the Y axis (vertical axis), or the X-Y axis simultaneously; A replot item 311 for reconstructing the graph 21 shown in the graph window 20 based on the start time and the end time input through the time slicing window 130 (see FIG. 2); A Send to CSV item 312 that supports storing data in the form of a CSV file based on a start time and an end time input through the time slicing window 130; And an item to be sent to a picture 313 for supporting the graph 21 displayed in the graph window 20 as a picture file.

The measurement item 301 supports a function of reading a value at a desired point in flight test analysis, for example, as shown in FIG. 5. According to a preferred embodiment, the aircraft pilot stability flight test analysis program according to the present invention has a function to display a plurality of point values through the method of Alt + Click when the user selects the measurement item 301 You can also apply.

The delete item 302 supports the function of deleting the data of a part which is not necessary in the flight test analysis. According to a preferred embodiment, the aircraft pilot stability flight test analysis program according to the present invention, when the user selects the item to be deleted 302, through the method of dragging the mouse from one point to delete multiple points at the same time It can also support features.

The maximum / minimum / average measurement items 303 to 305 are functions of finding the maximum value 22, the minimum value 23, and the average value 24 of the data in the portion displayed on the screen, for example, as shown in FIG. Support. For example, the aircraft pilot stability flight test analysis program according to the present invention may include a data portion having a maximum value 22 or a minimum value 23 when the user selects the maximum measurement item 303 or the minimum measurement item 304. It can support to automatically find and display. In addition, for example, the aircraft pilot stability flight test analysis program according to the present invention, when the user selects the average measurement item 305, the function that automatically finds and displays the part that has the value closest to the average value (24) Can support In addition, according to a preferred embodiment, the aircraft pilot stability flight test analysis program according to the present invention may support to adjust the position of the result window when the user clicks the edit plot button in the figure window of MATLAB.

The slope measurement item 306 supports a function of finding and plotting the slope of data in a portion displayed on the screen, for example, as shown in FIG. 7. For example, the aircraft pilot stability flight test analysis program according to the present invention plots the first curve-fitted values on the screen when the user selects the slope measurement item 306, and the curve-fitted first-order equation. It is possible to support the display of the coefficients on the screen at the same time.

The second order system item 307 supports a function of simultaneously displaying flight test results using input values required for qualitative analysis during the longitudinal axis input through the control panel view 10 of FIG. 2. For example, when the user selects the secondary system item 307, the aircraft pilot stability flight test analysis program according to the present invention simultaneously displays the attenuation value and the neutral frequency value input through the control panel view 10 on the screen. Can be supported.

The Zoom X item 308 and the Zoom Y item 309 support the function of enlarging data on the screen in the X-axis (horizontal axis) and Y-axis (vertical axis) directions, respectively, and the zoom XY item 310 displays the data on the screen. It supports to enlarge the XY axis at the same time.

The plot item 311 reconstructs the graph 21 on the graph window 20 based on the start time and the end time input through the time slicing window 130 of the control panel view 10 of FIG. 2. Support.

The Send to CSV item 312 supports a function of storing data in the form of a CSV file based on a start time and an end time input through the time slicing window 130 of the control panel view 10 of FIG. 2.

The Send to Picture item 313 supports saving the graph 21 displayed in the graph window 20 as a picture file. For example, the aircraft pilot stability flight test analysis program according to the present invention, when the user selects the item to send to the picture 313, the graph 21 shown in the graph window 20 jpeg, png, tif, gif, etc. It can support saving in the form of.

The aircraft pilot stability flight test analysis program according to the present invention may be recorded on a computer-readable recording medium. Examples of such computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like, as well as being implemented in the form of a carrier wave (e.g., transmission over the Internet) . The computer-readable recording medium may also be distributed over a networked computer system so that computer readable code in a distributed manner may be stored and executed. In addition, functional programs, codes, and code segments for implementing the present embodiment can be easily inferred by programmers in the technical field to which the present embodiment belongs.

In addition, the present invention is not necessarily limited to these embodiments, as long as all the constituent elements constituting the embodiment of the present invention are described as being combined or combined in one operation. That is, within the scope of the present invention, all of the components may be selectively coupled to one or more of them. In addition, although all of the components may be implemented as one independent hardware, some or all of the components may be selectively combined to provide a program module that performs some or all of the functions in one or a plurality of hardware As shown in FIG.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

10: control panel view 20: graph window
21: Graph 22: Maximum value
23: minimum value 24: average value
30: Select Function Window 110: File Control Window
120: test information window 130: time slicing window
140: time representation window 150: plot matrix window
160: axis handling window 170: secondary system input window
301: evaluation item 302: deletion item
303 to 305: Max / Min / Average item 306: Slope item
307: Secondary system items 308 to 310: Zoom item
311: Replot Item 312: Send to CSV Item
313: Send to picture item

Claims (4)

A computer-readable recording medium recording an aircraft pilot stability flight test analysis program, the program comprising:
Displaying a control panel view on a computer screen using a MATLAB graphical user interface and displaying a result of analyzing the flight control stability flight test analysis according to preset conditions through the control panel view; Including the steps of displaying,
In the control panel view,
A file control window for selecting a file to be analyzed;
A test information window for inputting at least one of aircraft number information, test number information, performance number information, and performance date information;
A time slicing window for inputting a start time and an end time of a file to be analyzed to cut out unnecessary portions from flight test raw data and to store only portions necessary for flight test analysis;
An i-lead time expression window that supports displaying an i-lead time when graphing flight test analysis results;
A plot matrix window for displaying flight test analysis results in various types of plot matrices according to the maneuver of the aircraft;
Before handling flight test results in various types of plot matrices according to the maneuver of the aircraft, the axis handling window supports setting the variable values of the axes for each graph represented in the various types of plot matrices. ; And
Neutral frequency, damping ratio, initial displacement, initial velocity, start time, end time required for qualitative analysis during the flight test includes a secondary system input window that allows you to enter a finish time,
In the result view,
A graph window for plotting a flight analysis result of the aircraft in a graph form; And
And a multi-function menu window for selecting a function required for the flight test analysis in one area of the graph window. The method of claim 1,
The time slicing window further includes an item for selecting whether a file to be analyzed is a single file or a multi file. Possible recording media. The method of claim 1,
The program includes:
To provide another function selection window above the graph window that shows flight test analysis results,
Another function selection window,
An evaluation item to assist in reading the values at one or more desired points of the graph shown in the graph window;
A delete item for supporting deletion of an unnecessary part of the values shown in the graph window;
A minimum / maximum / average item for supporting the automatic display of the minimum / maximum / average value of the graph displayed in the graph window;
A slope item for assisting in finding and automatically plotting a slope of a graph displayed in the graph window;
To display information on the neutral frequency, the attenuation ratio, the initial displacement, the initial velocity, the start time, and the end time input through the secondary system input window on a graph displayed in the graph window. 2nd order system item;
A zoom item for supporting a graph displayed in the graph window on an X axis (horizontal axis), a Y axis (vertical axis), or an XY axis simultaneously;
A replot item for reconstructing a graph displayed in the graph window based on the start time and the end time input through the time slicing window;
Send to CSV item to support data storage in the form of a CSV file based on the start time and the end time input through the time slicing window; And
And a Send to Picture item to support saving the graph displayed in the graph window as a picture file. A computer-readable recording medium having recorded thereon an aircraft pilot stability flight test analysis program. The method of claim 3, wherein
The program includes:
When a selection signal for the evaluation item is generated, it is possible to display a plurality of point values through the method of Alt + Click on the graph shown in the graph window, aircraft control stability flight test analysis Computer-readable recording medium having recorded the program.

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