CN102997846B - The full machine level measurement method of aircraft based on work space measurement and positioning system - Google Patents
The full machine level measurement method of aircraft based on work space measurement and positioning system Download PDFInfo
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- CN102997846B CN102997846B CN201210520063.0A CN201210520063A CN102997846B CN 102997846 B CN102997846 B CN 102997846B CN 201210520063 A CN201210520063 A CN 201210520063A CN 102997846 B CN102997846 B CN 102997846B
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Abstract
The invention provides the full machine level measurement method of a kind of aircraft based on work space measurement and positioning system, first determine the quantity of surveying work space and laser scanning base station according to the physical dimension of tested aircraft and the position of measurement point; Then use station meter the surveying work space that all laser scanning base stations are formed to be carried out to the demarcation of external parameter, set up work space measurement and positioning system coordinate system; Then work space measuring system coordinate system and aircraft axes are unified; The vector rod of work space measurement and positioning system is used to carry out contact type measurement to each measurement point respectively; Finally import in the data processor of work space measurement and positioning system by the coordinate figure of each measurement point recorded, Measured Coordinates value and theoretical value compare and then judge that aircraft is out of shape whether in permissible range.The present invention solves that the measuring accuracy existed in conventional airplane level measurement method is poor, workload is large, it is low and be easily subject to the problems such as the impact of operating personnel's proficiency to measure efficiency.
Description
Technical field
The invention belongs to airplane industry on-the-spot large scale three-dimensional coordinate measurement technical field, particularly relate to the full machine level measurement method of a kind of high precision aircraft digital based on work space measurement and positioning system.
Background technology
Work space measurement and positioning system (wMPS:Workspace Measurement Positioning System) is a kind of demand for industry spot global measuring and control and a kind of large scale network type measuring system grown up, and it is advantageous that the networking high-precision automatic measuring that can realize large-scale dimension coordinate.This system measures network by multiple rotary laser emitter (cell site) composition, the space angle intersection method for automatic measurement based on optoelectronic scanning is adopted to position single receiver, cell site operationally outwards launches the light signal with angle information, for the photelectric receiver in measurement space provides positioning service.During cell site's work, its rotation platform at the uniform velocity rotates around stationary shaft and outwards launches two restraints the planar laser together rotated with turntable, and the laser instrument simultaneously when rotation platform goes to a precalculated position on pedestal sends omnidirectional light pulse rotates starting point sync mark as single-revolution.Receiver receives sync mark light signal and plane of scanning motion light signal and by internal timer record now time value, and then calculates the angle that cell site turns over.After oneself knows cell site's azimuth information, only need the angle measurement obtaining two or more base station, just the use angle method that crosses can calculate receiver accurate coordinates now.
Aircraft take a flight test, fight and train etc. in flight course, usually can be subject to larger mistake load, this can cause the permanent strain of airframe, wing and empennage.But can not Timeliness coverage take corresponding measure if deflection is excessive, directly can have influence on the flying quality of aircraft, even jeopardize flight safety.Airplane horizontal survey utilizes the horizontal survey point on fuselage, wing and empennage to come to confirm the inspection of the relative position of aircraft all parts and in use deformation thereof.Therefore, for the good flying quality of guarantee and higher flight safety, the horizontal survey of aircraft has very important meaning.
The method of traditional survey aircraft fuselage, wing and empennage distortion carries out horizontal survey for main to aircraft with traditional optical surveying instrument, and the survey instrument of use is optical theodolite and steel tape etc.This traditional measuring method measuring accuracy is poor, workload is large, it is low and be easily subject to the impact of operating personnel's proficiency to measure efficiency, and therefore, the measuring method designing a kind of high-accuracy high-efficiency rate becomes airplane horizontal survey work problem demanding prompt solution.
Summary of the invention
The object of this invention is to provide and the present invention proposes the full machine level measurement method of a kind of aircraft based on work space measurement and positioning system, solve that the measuring accuracy existed in conventional airplane level measurement method is poor, workload large, measurement efficiency is low and be easily subject to the problems such as the impact of operating personnel's proficiency.
Technical scheme of the present invention: the full machine level measurement method of the aircraft based on work space measurement and positioning system, comprises the steps:
(1) quantity of surveying work space and laser scanning base station is determined according to the physical dimension of tested aircraft and the position of measurement point, each measurement point is made to be positioned at the best effort distance of Laser emission base station, and the laser intersection angle that two Laser emission base stations send is 60 °-90 °, and ensure that measurement point is unobstructed, there is good measurability;
(2) use station meter the surveying work space that all laser scanning base stations are formed to be carried out to the demarcation of external parameter, set up work space measurement and positioning system coordinate system;
(3) on airframe, choose reference point and set up aircraft axes, making the coordinate figure of reference point in aircraft axes be definite value; Then the coordinate of datum mark under work space measuring system coordinate system, work space measuring system coordinate system and aircraft axes are unified, thus makes the coordinate figure recorded under work space measuring system coordinate system be scaled the coordinate figure in aircraft axes;
(4) use the vector rod of work space measurement and positioning system to carry out contact type measurement to each measurement point respectively, record the coordinate figure of each measurement point on fuselage, wing successively; For measurement point higher on aircraft tail, vector rod is coordinated to measure by extension rod;
(5) coordinate figure of each measurement point recorded is imported in the data processor of work space measurement and positioning system, draw the Measured Coordinates value of each measurement point in aircraft axes, in Measured Coordinates value in aircraft axes and aircraft axes, theoretical value compares, and then judges aircraft distortion whether in permissible range.
Beneficial effect of the present invention: the present invention adopts work space measurement and positioning system to complete the full machine horizontal survey task of aircraft, and method is simple to operate, to the number of staff and the requirement of technical merit lower; Measuring accuracy is high, and measuring speed is fast, reduces surveying work amount greatly; Measurement result directly imports data processor and theoretical value compares, and comparative result, with form output display intuitively, is convenient to carry out analysis and adjustment to the distortion at each position of aircraft.
Accompanying drawing explanation
Fig. 1 is the aircraft full machine horizontal survey schematic diagram based on work space measurement and positioning system.
Embodiment
As shown in Figure 1, the full machine level measurement method of the aircraft based on work space measurement and positioning system, comprises the steps:
(1) surveying work space is determined according to the physical dimension of tested aircraft and the position of measurement point, and determine that the quantity of laser scanning base station is 9, each measurement point is made to be positioned at the best effort distance 6m place of Laser emission base station, and the laser intersection angle that two Laser emission base stations send is 90 °, and ensure that measurement point is unobstructed, there is good measurability;
(2) use station meter the surveying work space that all laser scanning base stations are formed to be carried out to the demarcation of external parameter, set up work space measurement and positioning system coordinate system;
(3) on airframe, choose three reference points and set up aircraft axes, making the coordinate figure of three reference points in aircraft axes be definite value; Then the coordinate of datum mark under work space measuring system coordinate system, work space measuring system coordinate system and aircraft axes are unified, thus makes the coordinate figure recorded under work space measuring system coordinate system be scaled the coordinate figure in aircraft axes;
(4) use the vector rod of work space measurement and positioning system to carry out contact type measurement to each measurement point respectively, record the coordinate figure of each measurement point on fuselage, wing successively; For measurement point higher on aircraft tail, vector rod is coordinated to measure by extension rod;
(5) coordinate figure of each measurement point recorded is imported in the data processor of work space measurement and positioning system, draw the Measured Coordinates value of each measurement point in aircraft axes, in Measured Coordinates value in aircraft axes and aircraft axes, theoretical value compares, Y phase coordinates value as a certain measurement point exceedes the tolerance range of its Y phase coordinates theoretical value, then illustrate that this measurement point there occurs moderate finite deformation.
The present invention is by more finally drawing the deflection of each measurement point successively by the Measured Coordinates value of each measurement point and theoretical value, and output display in a tabular form, and then judges that aircraft is out of shape whether in permissible range.
Claims (1)
1., based on the full machine level measurement method of aircraft of work space measurement and positioning system, it is characterized in that comprising the steps:
(1) quantity of surveying work space and laser scanning base station is determined according to the physical dimension of tested aircraft and the position of measurement point, each measurement point is made to be positioned at the best effort distance of Laser emission base station, and the laser intersection angle that two Laser emission base stations send is 60 °-90 °, and ensure that measurement point is unobstructed, there is good measurability;
(2) use station meter the surveying work space that all laser scanning base stations are formed to be carried out to the demarcation of external parameter, set up work space measurement and positioning system coordinate system;
(3) on airframe, choose reference point and set up aircraft axes, making the coordinate figure of reference point in aircraft axes be definite value; Then the coordinate of datum mark under work space measuring system coordinate system, work space measuring system coordinate system and aircraft axes are unified, thus makes the coordinate figure recorded under work space measuring system coordinate system be scaled the coordinate figure in aircraft axes;
(4) use the vector rod of work space measurement and positioning system to carry out contact type measurement to each measurement point respectively, record the coordinate figure of each measurement point on fuselage, wing successively; For measurement point higher on aircraft tail, vector rod is coordinated to measure by extension rod;
(5) coordinate figure of each measurement point recorded is imported in the data processor of work space measurement and positioning system, draw the Measured Coordinates value of each measurement point in aircraft axes, in Measured Coordinates value in aircraft axes and aircraft axes, theoretical value compares, and then judges aircraft distortion whether in permissible range.
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| CN102997846B true CN102997846B (en) | 2015-10-28 |
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| CN107389040B (en) * | 2017-07-11 | 2019-02-12 | 武汉大学 | A kind of the infrared three-dimension positioning device and method of oval calotte building |
| CN109484668B (en) * | 2018-09-27 | 2020-08-11 | 中国民用航空飞行学院 | Airborne airplane horizontal measurement method and system |
| CN112100735B (en) * | 2020-08-03 | 2022-11-11 | 东南大学 | Airborne IMU high-precision reference acquisition method based on wing deformation |
| CN112722322B (en) * | 2020-12-25 | 2023-12-15 | 中国航空工业集团公司沈阳飞机设计研究所 | Accurate reproduction method and system for airplane horizontal measurement points |
| CN114408210A (en) * | 2022-01-18 | 2022-04-29 | 中国民用航空飞行学院 | Airplane structure characteristic parameter digital horizontal measurement method |
| CN114543767B (en) * | 2022-02-22 | 2023-05-12 | 中国商用飞机有限责任公司 | System and method for aircraft level measurement |
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| CN102313522A (en) * | 2011-07-05 | 2012-01-11 | 长春理工大学 | High-precision all-airplane digital three-dimensional horizontal measuring system of airplane |
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Effective date of registration: 20201214 Address after: No.20, Shuangji street, Jilin economic and Technological Development Zone, Jilin City, Jilin Province, 132000 Patentee after: JILIN AVIATION MAINTENANCE LLC Address before: 110034 No. 1 Ling Bei street, Huanggu District, Liaoning, Shenyang Patentee before: SHENYANG AIRCRAFT Corp. |