本研究主要設計一套定翼無人機所使用之全自主降落系統，於硬體迴路模擬之環境中加以驗證，並且以實踐飛行測試為最終目標。由於無人機降落程序與民航機並不相同，因此本研究藉由蒐集並分析多次飛行的數據，設計符合無人機降落的降落程序並自動化。本研究所使用的實測平台為國立成功大學航太系微衛星與遙控載具實驗室所設計的黑面琵鷺-100(SPOONBILL-100)，為了加快系統的開發及驗證時程，於控制策略上使用模糊邏輯控制器設計縱向、橫向以及導航系統，並且於高度控制上使用適應性的高度控制，主要是藉由改變模糊控制器之歸屬函數達到在不同情況下依然有較好的響應。實際飛行測試方面，最重要的參考位置使用DGPS差分定位系統提供良好的測試環境驗證本自主降落系統。

An automatic landing system for fixed-wing UAVs (Unmanned Aerial Vehicles) was designed in this study, verified in the hardware-in-loop simulation and with the goal of real flight test. Because of the landing procedure for UAV was different from civil aviation, the landing data collected from real flight tests were analyzed for design the automatic landing strategy. The experimental platform is the Spoonbill-100 UAV system which was designed by the Remotely Piloted Vehicle & Micro Satellite Research Laboratory (RMRL) at National Cheng Kung University (NCKU). For fast development and verification, the fuzzy logic controller was applied on the flight control system which was including lateral control, longitudinal control and navigation strategy. Especially, the adaptive fuzzy was applied on the altitude control from change the membership function of the fuzzy controller. The adaptive altitude control made the UAV have better response during landing process. About the real flight test, the most important data were position and altitude. Those data was provided by the Differential Global Positioning System (DGPS) which was a good reference for testing the automatic landing system.

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