Localization Technique of Pipeline Robot Based on Ultra-Long Electromagnetic Wave and Symmetrical Antenna Array
QI Hai-ming1, ZHANG Xiao-hua1, CHEN Hongjun1, DENG Zong-quan2
1. School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin 150001, China; 2. School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China
Abstract：Working principle of the localization system for pipeline robot is analyzed in this paper.Electromagnetic field distribution of the ultra-long wave emitter is studied and a parameterized mathematic model is established.Symmetrically distributed antenna array is adopted as the signal receiving equipment for ultra-long wave.Both nonlinear and linear localization algorithms are presented to realize spatial localization of the pipeline robot crawling in unknown underground or underwater pipelines.Industrial field tests verify that both the localization system and the algorithms are efficient,and with the plane localization precision less than 15 cm,they are able to meet the demands of engineering tasks such as pipeline operation and inspection.
[1] Okamoto J Jr,Adamowski J C,Tsuzuki M S G,et al.Autonomous system for oil pipelines inspection[J].Mechatronics,1999,9(7):731～743.
[2] Choi H R,Ryew S M.Robotic system with active steering capability for internal inspection of urban gas pipelines[J].Mechatronics,2002,12(5):713～736.
[3] Murayama R,Makiyama S,Kodama M,et al.Development of an ultrasonic inspection robot using an electromagnetic acoustic transducer for a lamb wave and an SH-plate wave[J].Ultrasonics,2004,42(1-9):825-829.
[4] Carvalho A A,Rebeilo J M A,Sagrilo L V S,et al.MFL signals and artificial neural networks applied to detection and classification of pipe weld defects[J].NDT and E International,2006,39(8):661～667.
[5] Yong L,Wilson J,Gui Y T.Experiment and simulation study of 3D magnetic field sensing for magnetic flux leakage defect characterisation[J].NDT and E International,2007,40(2):179～184.
[6] Nestleroth J B,Davis R J.Application of eddy currents induced by permanent magnets for pipeline inspection[J].NDT and E.International,2007,40(1):77～84.
[7] Chen H J,Li J Y,Zhang X H,et al.Application of visual servoing to an X-ray based welding inspection robot[A].Proceedings of the International Conference on Control and Automation[C].Piscataway,NJ,USA:IEEE,2005.977～982.
[8] 徐君节,徐得名,杨雪霞.管道内微带天线的FDTD全波分析与设计[J].电波科学学报,2004,19(5):618～621.Xu Jun-shu,Xu De-ming,Yang Xue-xia.Full-wave analysis and design of microstrip antenna in pipe using FDTD method[J].Chinese Journal of Radio Science,2004,19(5):618～621.
[9] 唐劲飞,龚沈光,王金根.基于磁偶极子模型的目标定位和参数估计[J].电子学报,2002,30(4):614～616.Tang Jin-fei,Gong Shen-guang,Wang Jin-gen.Target positioning and parameter estimation based on magnetic dipole model[J].Acta Electronica Sinica,2002,30(4):614～616.
[10] 杨儒贵.电磁场与电磁波[M].北京:高等教育出版社,2003.Yang Ru-gui.Electromagnetic Fields and Waves[M].Beijing:Higher Education Press,2003.
[11] 孙文瑜,徐成贤,朱德通.最优化方法[M].北京:高等教育出版社,2004.Sun Wen-yu,Xu Cheng-xian,Zhu De-tong.Optimization Method[M].Beijing:Higher Education Press,2004.
