飛控輔助設計用之異常氣相模型之建立及其程式庫設計

Abstract

本論文研究之目的乃在於建立包括大氣紊流及微暴雷雨的多種不同氣流模 式的程式庫，並配合修改AIAA所提供的飛機模型，使得AIAA的飛機模型能 夠加入氣流模式對飛機運動的影響。這個模擬系統將可應用於飛機的設計 改良及測試飛行控制器性能等用途。在本論文中所建立的氣象氣流模型可 分為三類，第一類為離散式的陣風模型，包括上升氣流，下降氣流，側風 ，逆風，以及順風。第二類為大氣紊流模型，我們以von Karman,Dryden 的頻譜模型及渦流陣列等方式來建立其模型。第三類氣象模型為微暴雷雨 模型，以及多環狀渦流傾斜式的微暴雷雨模型。此外，我們也建立一個簡 單的下降暴雷與模型以及由DFW機場的微暴雷雨記錄所發展得到的兩組模 型。我們以將上述的氣流模型，以程式庫的方式，提供使用者可輕易的於 其飛機模型程式中呼叫使用。在本論文中，我們以AIAA的飛機模型作為飛 行運動模擬的對象，並展現各氣流模型對AIAA飛機的飛行影響的模擬結果 。 The objective of this thesis is to design the library subroutines of wind models like turbulence,microburst,and many other special winds.We also clearly propose the way to modify the program of the jet-plane,which is proposed in AIAA,so that the wind effects can be applied to the aviation process of AIAA plane.Moreover,our design can be primarily used for testing the designs of airplanes and their flight controllers.In this thesis,we consider three types of abnormal winds and their mathematical models.The first one is the discrete gust wind model,including updraft,downdraft,head wind,tail wind,and side wind.The second one is the atmospheric turbulence model.We use the von Karman spectrum,Dryden spectrum,and a vortex array to generate this type of wind models.The third one is the microburst.We have built up five samples for this model:such as, a simple downdraft model,a single ring vortex model,a multi-ring tilt vortices model,and DFW microburst models which are provided by the reconstruction of DL-191 and AA-539.We have generated a set of library subroutines for implementing the wind models.For verifying our design,we use AIAA plane as the example plane.The wind effects to the plane have been computed and shown in this thesis.