NDLI: Aircraft separation's control law simulation based on real time aerodynamics of unsteady flow-field

Content Provider	IEEE Xplore Digital Library
Author	Gong Junfeng Zhu Xiaoping
Copyright Year	2011
Description	Author affiliation: UAV Research Institute, Northwestern Polytechnical University, Xi'an 710065, China (Zhu Xiaoping) \|\| College of Aeronautics, Northwestern Polytechnical University, Xi'an 710065, China (Gong Junfeng)
Abstract	Modeling aerodynamics of the separation aircraft is important for the controlling the separation aircraft. Using unstructured dynamic mesh method, coupled with Euler equation solver, unsteady flow-field solve give the real time aerodynamics to control model. Controlled by control law, the control surfaces as single moving bodies can deflect for attitude control. In time domain, through this simulate system, user can design and adjust the control law for separation aircraft. Considering the inertia of control system, the real time aerodynamics is delayed for control system. At the same time, control surfaces' deflection angle and angle velocity saturation are considering. The result of simulation indicated that the generic control law for aircraft flight is not suit to controlling separation. The reason for this phenomena is severity unsteady interfere aerodynamics action on separation aircraft. Additional exciter is introduced by control surfaces' deflection angle and angle velocity saturation. The exciter brings on control motion's oscillatory and divergence. Appropriate reduced the parameter of control law and increased pass band of control law, we can improve separation aircraft's control system performance.
Starting Page	3589
Ending Page	3594
File Size	1008341
Page Count	6
File Format	PDF
ISBN	9781457706776
ISSN	21612927
e-ISBN	9789881725592
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-07-22
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Chinese Assoc of Automati
Subject Keyword	Separation Atmospheric modeling Dynamic Mesh Unsteady Flows Aerodynamics Control systems Electronic mail Control Law Aerospace control Six-dof Coupling Solve Mathematical model Aircraft Euler Equation
Content Type	Text
Resource Type	Article

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