Terrain following and autonomous landing using optical flow
-
摘要: 将一种自研的光流传感器安装到飞行平台上,利用光流信息控制飞行器的地形跟随和自动着陆.测试了光流传感器的测量性能,建立了飞行器的运动模型,开发了基于光流反馈的地形跟随控制算法,提出了光流自动着陆的控制规律,并进行了数学仿真和硬件在回路的实时仿真验证,实验结果表明:光流信息可以一种相对简单的形式来巧妙地同时控制飞行速度和飞行高度,保证飞行器安全地执行多种飞行任务,实验证明了光流传感器在飞行控制中具有工程可行性.Abstract: An optical flow sensor, which is fabricated by our laboratory, was mounted on a unmanned aerial vehicle(UAV) to implement terrain following and autonomous landing tasks by using optical flow as feedback. The performance of the optical flow sensor was tested and the UAV model was built. Control algorithm for terrain following based on optical flow was developed and landing strategies using optical flow as feedback was proposed.Mathematical simulations and hardware-in-loop tests show optical flow information can be used in a relatively simple form to control both the flying speed and altitude at the same time to ensure the safety of flying missions for the UAV. The optical flow sensor is proved available for flight control by the hardware tests.
-
[1] Ortiz A E,Neogi N.Color optic flow: a computer vision approach for object detection on UAVs //25th Digital Avionics Systems Conference.Portland:IEEE/AIAA,2006:1-12 [2] Srinivasan M V,Poteser M, Kral K.Motion detection in insect orientation and navigation[J].Vision Research,1999,39:2749-2766 [3] Barrows G L,Chahl J S,Srinivasan M V.Biologically inspired visual sensing and flight control[J].The Aeronautical Journal,2003,107(1069):159-168 [4] Ortiz A E,Neogi N N.Object detection and avoidance using optical techniques in uninhabited aerial vehicles //AIAA Guidance,Navigation and Control Conference and Exhibit.Hilton Head,Soth Carolina: ,2007:20-23 [5] Watanabe Y,Fabiani P.Air-to-Ground target tracking in a GPS-Denied environment using optical flow estimation //AIAA Guidance,navigation,and Control Conference.Chicago,llinois:AIAA,2009 [6] Romero H,Salazar S,Lozano R.Real-time stabilization of an eight-rotor UAV using optical flow[J].IEEE Transactions on Robotics,2009,25(4):809-817 [7] Barber D B,Griffiths S R,McLain T W,et al.Autonomous landing of miniature aerial vehicles[J].Journal of Aerospace Computing,Information,and Communication,2007,4(5):770-784 [8] Griffiths S,Saunders J,Curtis A,et al.Maximizing miniature aerial vehicles[J].IEEE Robotics & Automation Magazine,2006,13(3):34-44 [9] Rodrguez A F,Andersen E,Bradley J M,et al.Wind estimation using an optical flow sensor on a miniature air vehicle //AIAA Guidance,Navigation and Control Conference and Exhibit.Hilton Head,South Carolina:AIAA,2007 [10] Srinivasan M V,Zhang S W,Chahl J S.Landing strategies in honeybees and possible applications to autonomous airborne vehicles[J].The Biological Bulletin,2001,200:216–221 [11] Liu Xiaoming,Chen Wanchun,Yin Xingliang,et al.Optical flow sensor designed for altitude-holding flight //2010 International Conference on Electrical Engineering and Automatic Control.Zibo: ,2010:114-117 [12] Ruffier F,Franceschini N.Optic flow regulation: the key to aircraft automatic guidance[J].Robotics and Autonomous Systems,2005,50:177–194 [13] Netter T,Franceschini N.A robotic aircraft that follows terrain using a neuromorphic eye //IEEE/RSJ International Conference on Intelligent Robots and Systems.EPFL Lausanne Switzerland: ,2002:129-134 [14] 孙虎章.自动控制原理[M].北京:中央广播电视大学出版社,2002:59 Sun Huzhang.Auto control theory[M].Beijing: Central Radio & TV University Press,2002: 59 (in Chinese) [15] Barrows G L,Chahl J S,Srinivasan M V.Biomimetic visual sensing and flight control //Proceedings Seventeenth International Unmanned Air Vehicle Systems Conference.Bristol,UK: ,2002:1-15
点击查看大图
计量
- 文章访问数: 3309
- HTML全文浏览量: 140
- PDF下载量: 1514
- 被引次数: 0