飞机颤振检测系统的快速开发和仿真
飞机颤振检测系统的快速开发和仿真转自MathWorks网站：http://www.simwe.com/forum/post.php?action=newthread&fid=19&extra=page%3D1
As any airline passenger who has experienced moderate turbulence knows, an aircraft is not a rigid structure. In certain circumstances, the complex interaction between the flexible structure and the aerodynamics can produce undesirable effects.The phenomenon known as flutter, for example, can be extremely destructive to aircraft components such as wings and tails.
To identify the conditions that cause flutter and build in mechanisms to suppress it, many aircraft design teams use a combination of finite element analysis (FEA) and computational fluid dynamics (CFD). FEA helps them understand the structural properties of the aircraft, such as vibrational modes, natural frequencies, and deformation under load.CFD enables them to predict aerodynamic force and moment characteristics of the structure at various speeds, angles of attack, sideslip, and atmospheric conditions.
These analyses are often performed by multiple teams, while another team designs the suppression control systems for this complex, highly coupled multidomain system. Integrating multiple teams' tools and results is a slow, error-prone process that leaves little opportunity to rapidly iterate and simulate design configurations.
In this article, we will use a single, integrated environment--MathWorks tools for Model-Based Design-- to model the structural dynamics, the aerodynamics, a flutter detection system, and a feedback control system to suppress flutter. We will validate the design using actual test data from the Benchmark Active Controls Technology (BACT) wing, tested in the NASA Langley Research Center’s transonic wind-tunnel as part of the center's Benchmark Models Program.
The models and examples used in this article are available for download. 有点好奇问下, 有人试执行过吗? 效果如何?:@) 等着看看 楼主你好，能把这边文章的原文发给我吗？联系失效了，谢谢了！我的邮箱：hu1716@126.com
谢了！
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