By a News Reporter-Staff News Editor at Defense & Aerospace Week -- Fresh data on Aerospace Research are presented in a new report. According to news originating from Beijing, People's Republic of China, by VerticalNews correspondents, research stated, "This paper develops a nonlinear path following control method that drives an underactuated stratospheric airship onto a predefined planar path with a given speed profile. The dynamic model of the airship used for controller design is first introduced with kinematics and dynamics equations."
Our news journalists obtained a quote from the research from the Beijing University of Aeronautics and Astronautics, "In order to render good pilot behavior for the control action, a guidance controller by referring to the guidance-based path following principle is derived. Then the controller is extended to cope with the airship attitude and velocity by resorting to the backstepping and Lyapunov-based techniques. The designed control system finally possesses a cascaded structure which consists of guidance loop, attitude control loop and velocity control loop. Stability analysis shows that the controlled closed-loop system is globally asymptotically stable, and the sway velocity which cannot be directly controlled is bounded."
According to the news editors, the research concluded: "Simulation results for the airship following typical paths are illustrated to verify effectiveness of the proposed approach."
For more information on this research see: Global path following control for underactuated stratospheric airship. Advances in Space Research, 2013;52(7):1384-1395. Advances in Space Research can be contacted at: Elsevier Sci Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, Oxon, England. (Elsevier - www.elsevier.com; Advances in Space Research - www.elsevier.com/wps/product/cws_home/644)
The news correspondents report that additional information may be obtained from Z.W. Zheng, Beijing Univ Aeronaut & Astronaut, Sci & Technol Aircraft Control Lab, Beijing 100191, People's Republic of China.
Keywords for this news article include: Asia, Beijing, Aerospace Research, People's Republic of China
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