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研究生:黃守萬
研究生(外文):Huang, Shou-Wan
論文名稱:30公分x30公分磁浮風洞建立與模擬
論文名稱(外文):System Setup and Simulation for 30 cm x 30 cm Magnetic Suspension Wind Tunnel
指導教授:林清一林清一引用關係
指導教授(外文):Chin E. Lin
學位類別:碩士
校院名稱:國立成功大學
系所名稱:航空太空工程學系
學門:工程學門
學類:機械工程學類
論文種類:學術論文
畢業學年度:85
語文別:中文
論文頁數:100
中文關鍵詞:磁浮風洞動態性量測五軸動態分析六軸動態分析
外文關鍵詞:Magnetic Suspension Wind Tunneldynamic measurementthe dynamic of 5 degree-of-freedomthe dynamic of 6 degree-of-freedom
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在傳統風洞的量測,以支架來支撐模型,經由支撐桿上的量測儀器把
量測訊號送至監測中心。在加入支撐桿時,已使模型所承受的流場和實際
上有差距,造成量測上的不準確性。此問題的其一解決方案,由磁浮效應
來消除對於支架的依賴,所以有了磁浮風洞的構想,另外也可以解決傳統
風洞系統無法達成的動態性量測。 本研究室已完成10公分正方的磁浮
風洞,為了能進一步的實際應用和改善性能,重新設計一個30公分正方的
磁浮風洞。在初始階段,用模擬來分析其可行性。藉由模擬可以得到風洞
的磁場,來評估磁極和修正硬體的設計,可以減少錯誤的嚐試。 本篇
論文的內容,是描述30公分x 30公分磁浮風洞的建立。在模擬分析上,在
本文中分成三部分。第一部份,在開路狀態下,做五軸動態分析,利用軟
體 "OPERA 3D"計算風洞的測試區的磁場,由模擬的數據帶入動態方程式
做可行性分析。第二部分,針對於懸浮模型尺寸來考慮,因應模型尺寸較
大時,磁力方程式做假設和修改,使得動態方程式能更接近實際情況。第
三部分,在以往只有五軸動態分析,現今在開路狀態下,由五軸動態方程
式擴展成六軸動態方程式,分析其可行性及是否修改磁極的排列和模型。
經由本文對30公分x 30公分磁浮風洞建模和分析的完成,有助於在未來系
統的設計和實現上有所助益。

In the conventional wind tunnel measurement system, the test
model is supported by a stick. Aerodynamic signal measurement
is carried out through the sensors and transducers in the stick,
and is sent to controlcomputer. The applied model support will
cause great deviation to the testflow as compared to actual
flow, and this results in a great measurementerrors. To solve
this problem, the magnetic suspension technique isproposed to
replace the model support. This is an idea of the
magneticsuspension wind tunnel system (MSWTS). Besides, it can
also solve theproblem of dynamic measurement which can not be
accomplished in theconventional wind tunnel. In our
laboratory, we have already set up a 10 cm x 10 cm MSWTS. For
further application and improvement on the some performance, in
thisthesis, a new 30 cm x 30 cm MSWTS from the redesign process
is presented.In the initial step, we use the simulation to
analyze the capability andfeasibility of the new system. For
better understanding the proposedredesign MSWTS, a system
simulation is carried to obtain the designer'smagnetic filed.
From the magnetic field data, we can estimate the sizeof the
electromagnets and its arrangement. This can reduce trial
anderrors in experiments. This thesis describes the system
setup for 30 cm x 30 cm MSWTS. The analysis of simulation can
separate three parts. First, the analysis is related to the
dynamic of 5 degree-of-freedom (DOF) in open loop operation.
Using the software package "OPERA 3D", we can calculate the
magnetic fields in the test section. Then the data are fed into
the dynamic equation toanalyze the feasibility. Second, we
consider the size of the model. Because its is larger than the
set-up system, the assumption of themagnetic torque and force
has to make some modification. The modificationdyamic equation
can make the dynamic equation approximate real situation.Third,
the of 6-DOF in open-loop is derived. Expanding from the
5-DOFdynamic control the 6-DOF, we analyze the system
feasibility, and modifythe collocation and size of the
electromagnets and model. From this study, we have finished
the system model setup and analysisfor the new MSWTS. The
achievement of simulation results reduce the system setup and
implementation in the further work.

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