A measuring method for large antenna assembly using laser and vision guiding technology |
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| Affiliation: | 1. School of Mechanics and Electronics, Harbin Institute of Technology, Harbin, China;2. School of Computer Science and Technology, Harbin Institute of Technology, Harbin, China;1. School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China;2. National Institute of Metrology, Beijing 100013, China;1. Department of Engineering, University of Sannio, Benevento, Italy;2. Medical School, Ovidius University Costanta, Romania;3. Department of Chemistry and Chemical Technology (CTC), University of Calabria, Rende, Italy;1. Department of Civil and Environmental Engineering, Korea Advanced Institute of Science & Technology, Daejeon 34141, Republic of Korea;2. Structure Maintenance Team, New Airport Hiway, Co. Ltd., Incheon 41416, Republic of Korea;1. School of Civil Engineering and Mechanics, Lanzhou University, Lanzhou 730000, PR China;2. Key Lab of Mechanics on Disaster and Environment in Western China (Lanzhou University), Ministry of Education, Lanzhou 730000, PR China;3. Key Lab of Structures Dynamic Behavior and Control (Harbin Institute of Technology), Ministry of Education, Harbin 150090, PR China;4. College of Civil Engineering and Architecture, Zhejiang University, Hangzhou 310058, PR China |
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| Abstract: | In this paper a new conception of a measuring method is proposed to assist precision automatic assembly of large radar antenna. Different from conventional 6-DOF tracking methods, the measuring system decomposes the measurement task into several independent steps. The measuring system consists of a camera, two laser distance meters, two position sensitive detectors (PSD) and an inclination angle sensor. The camera is adopted to guide antenna position and orientation adjustment over a large space. Laser meters and PSD sensor is used to precisely measure the position and orientation of radar antenna. To improve the practicability of measuring system, a robust vision measurement method is proposed. The mathematical models and practical calibration methods for measurement are elaborated. The preliminary experimental results agree with the methods currently being used for orientation and position measurement. The measuring method provides an alternative choice for the metrology in precision assembly. By using the method proposed in this paper, the measuring system can achieve a measurement accuracy of approximately 1 mm, which meets the accuracy requirement of large radar antenna automatic assembly application. Besides, the measuring method provides an alternative solution for large scale metrology which take the environmental impact into account. |
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| Keywords: | Radar antenna Automated assembly Position and orientation measurement Large scale metrology |
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