一种飞机装配用便携式非接触轮廓扫描系统
A Portable Noncontact Profile Scanning System for Aircraft Assembly
在大型飞机装配过程中,三维轮廓扫描对于装配质量检测具有关键作用。为实现大型飞机零部件高反光曲面轮廓的扫描测量,本文提出一种兼顾精度与效率的非接触式自动化测量系统和方法。首先,以距离传感器辅助摄影测量,建立一种非接触式三维坐标复合测量系统,避免被测表面高反光对摄影测量精度的影响。同时,建立一种蕴含距离传感器一维测距信息与视觉全局转换关系的复合式坐标测量模型,高精度解算被测量点的三维坐标。其次,构建一种轮廓信息驱动的形面自动扫描方法和策略,在距离传感器有效量程内实现形面的非接触快速扫描与轮廓重建。最后,在某型号飞机平尾升降舵(尺寸约1760 mm × 460 mm)装配过程中对所提系统及方法进行现场试验与精度分析。实验表明:整个测量过程用时仅208 s,形面轮廓重建精度优于0.121 mm,因此,鉴于大型飞机装配过程中形面轮廓的高精度和高效率测量要求,所提系统及方法具有广阔应用前景。
Three-dimensional (3D) profile scanning plays a crucial role in the inspection of assembled large aircraft. In this paper, to achieve noncontact automatic measurements of the high-reflective profiles of large-scale curved parts and components, an automated noncontact system and method with high accuracy and high efficiency are presented. First, a hybrid 3D coordinate measurement system based on proximity sensors and cameras is proposed to obtain noncontact measurements while avoiding the influence of high reflection on the measurement accuracy. A hybrid measurement model that combines the one-dimensional distances measured by the proximity sensors and the 3D information obtained by cameras is proposed to determine high-accuracy 3D coordinates of the measured points. Then, a profile-driven 3D automated scanning method and strategy are designed to rapidly scan and reconstruct the profile within the effective range without scratching the profile or exceeding the measurement range of the proposed system. Finally, experiments and accuracy analyses are performed in situ on an assembled tailplane panel (approximately 1760 mm × 460 mm). The automated scanning process is completed in a timeframe of 208 s with an average error of less than 0.121 mm for profile reconstruction. Therefore, the proposed method is promising considering both the high accuracy and high efficiency requirements of profile inspections for large aircraft.
| Number of the sensors | Control vectors | Model parameters of the sensors | |
|---|---|---|---|
| 1 | |||
| 2 | |||
| 3 |
| Index | Task steps | Quantity of measured points | Duration (s) | Duration per point (s) | Accuracy | Automation |
|---|---|---|---|---|---|---|
| Laser tracker | Point-by-point measurement | 456 | ≈ 985 | 2.16 | Maximum: 0.039 mm in the range of 4 m (as the benchmark) | No |
| Photogrammetry | Add the measurement points; photograph to measure all the points, and remove the measurement points | 40 | ≈ 341 | 8.53 | Maximum: 0.552 mm Minimum: 0.000 mm Mean: 0.184 mm | No |
| Method in this paper | Scanning the boundary measurement line and automated scanning | 349 | ≈ 208 | 0.60 | Maximum: 0.378 mm Minimum: 0.003 mm Mean: 0.121 mm | Yes |
| [1] |
Peng G, Sun Y, Xu S. Development of an integrated laser sensors based measurement system for large-scale components automated assembly application. IEEE Access 2018;6:45646‒54. |
| [2] |
McKenna V, Jin Y, Murphy A, Morgan M, Fu R, Qin X, et al. Cost-oriented process optimisation through variation propagation management for aircraft wing spar assembly. Robot Comput Integr Manuf 2019;57:435‒51. |
| [3] |
Shah A, Blumberg L, Shah J. Planning for manipulation of interlinked deformable linear objects with applications to aircraft assembly. IEEE Trans Autom Sci Eng 2018;15(4):1823‒38. |
| [4] |
Bao Y, Chen Z, Wei S, Xu Y, Tang Z, Li H. The state of the art of data science and engineering in structural health monitoring. Engineering 2019;5(2):234‒42. |
| [5] |
Zhong RY, Xu X, Klotz E, Newman ST. Intelligent manufacturing in the context of Industry 4.0: a review. Engineering 2017;3(5):616‒30. |
| [6] |
Schmitt RH, Peterek M, Morse E, Knapp W, Galetto M, Härtig F, et al. Advances in large-scale metrology—review and future trends. CIRP Ann 2016;65(2):643‒65. |
| [7] |
Pérez Muñoz P, García JAA, Mazo JS. Analysis of the initial thermal stabilization and air turbulences effects on laser tracker measurements. J Manuf Syst 2016;41:277‒86. |
| [8] |
Lei P, Zheng L. An automated in-situ alignment approach for finish machining assembly interfaces of large-scale components. Robot Comput Integr Manuf 2017;46:130‒43. |
| [9] |
Spencer Jr BF, Hoskere V, Narazaki Y. Advances in computer vision-based civil infrastructure inspection and monitoring. Engineering 2019;5(2):199‒222. |
| [10] |
Lee T, Kim C, Cho DD. A monocular vision sensor-based efficient SLAM method for indoor service robots. IEEE Trans Ind Electron 2019;66(1):318‒28. |
| [11] |
Xu Y, Gao F, Jiang X. Performance analysis and evaluation of geometric parameters in stereo deflectometry. Engineering 2018;4(6):806‒15. |
| [12] |
Cervera A, Ezra O, Kuperman A, Peretz MM. Modeling and control of magnetic actuation systems based on sensorless displacement information. IEEE Trans Ind Electron 2019;66(6):4849‒59. |
| [13] |
Beyca OF, Rao PK, Kong Z, Bukkapatnam STS, Komanduri R. Heterogeneous sensor data fusion approach for real-time monitoring in ultraprecision machining (UPM) process using non-parametric Bayesian clustering and evidence theory. IEEE Trans Autom Sci Eng 2016;13(2):1033‒44. |
| [14] |
Lee KM, Hao B, Li M, Bai K. Multiparameter eddy-current sensor design for conductivity estimation and simultaneous distance and thickness measurements. IEEE Trans Ind Inform 2019;15(3):1647‒57. |
| [15] |
Lembono TS, Suárez-Ruiz F, Pham QC. SCALAR: simultaneous calibration of 2D laser and robot kinematic parameters using planarity and distance constraints. IEEE Trans Autom Sci Eng 2019;16(4):1971‒9. |
| [16] |
Kim YK, Kim KS, Kim S. A portable and remote 6-DOF pose sensor system with a long measurement range based on 1D laser sensors. IEEE Trans Ind Electron 2015;62(9):5722‒9. |
| [17] |
Wu L, Ren H. Finding the kinematic base frame of a robot by hand‒eye calibration using 3D position data. IEEE Trans Autom Sci Eng 2017;14(1):314‒24. |
| [18] |
An Y, Li B, Hu H, Zhou X. Building an omnidirectional 3D color laser ranging system through a novel calibration method. IEEE Trans Ind Electron 2019;66(11):8821‒31. |
| [19] |
Kim YK, Kim Y, Jung YS, Jang IG, Kim KS, Kim S, et al. Developing accurate long-distance 6-DOF motion detection with one-dimensional laser sensors: three-beam detection system. IEEE Trans Ind Electron 2013;60(8):3386‒95. |
| [20] |
Zhang Y, Tang K. Automatic sweep scan path planning for five-axis free-form surface inspection based on hybrid swept area potential field. IEEE Trans Autom Sci Eng 2019;16(1):261‒77. |
| [21] |
Huang Q, Lan J, Li X. Robotic arm based automatic ultrasound scanning for three-dimensional imaging. IEEE Trans Ind Inform 2019;15(2):1173‒82. |
| [22] |
Macleod CN, Dobie G, Pierce SG, Summan R, Morozov M. Machining-based coverage path planning for automated structural inspection. IEEE Trans Autom Sci Eng 2018;15(1):202‒13. |
| [23] |
Palomer A, Ridao P, Forest J, Ribas D. Underwater laser scanner: ray-based model and calibration. IEEE/ASME Trans Mechatron 2019;24(5):1986‒97. |
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