自同步發射機 的英文怎麼說
中文拼音 [zìtóngbùfāshèjī]
自同步發射機
英文
selsyn generator-
Abstract : based on the electronic focus technology development of state - of - the - art, the paper suggested a complete apparatus s cheme ofauto - focus based on sspd ( self - scanned photodiode array ) and 8098 singl e chipprocessor, giving out a focus criterion algorithm based on image high freq uencystatistics. the function of auto - focus of both reflected and transparent o pticalmicroscope was realized. meanwhile some corresponding problems such as sta bility of lightsource, step motor driving etc. were also discussed, which greatly improved the accuracy andreliability of the system
文摘:在介紹與分析了國內外電子調焦系統的技術發展與現狀的基礎上，提出了一種基於sspd （自掃描光電二極體列陣）與8098單片微處理器自動調焦的整體技術方案，給出了基於圖像高頻成分統計的聚焦判識演算法，在此基礎上實現了反射式與透射式光學顯微鏡的自動調焦，同時對系統的可靠性有關的其它相關問題如光源穩定性、步進電機驅動等問題也進行了討論。In large rotating machinery using filmatic bearing ( turbogenerator, air compressor, etc. ) there is a potential trouble from impefect installation or running conditions, a metals " contact between rotors and shells. the trouble is usully called rubbing. the advantage of ae technologe in the rubbing diagnosis and early detection is showed. instead of classical ae characteristic parameters ( counts, amplitude, energy, duration and the other ones ) a new feature extraction by frequency analysis of ae envelop signals is discussed. both research of ae process and field experements indicate that periodic components in the envelop spectrum related to rotational speed increase evidently at the beginning of rubbing production, hence are highly sensitive to the rubbing fault diagnosis. according to the new design an acoustic emission equipment for the rubbing diagnosis named buaa ae testing system is developed and described
汽輪發電機、空氣壓縮機等採用油膜支撐的大型轉動機械，由於安裝或運行中的原因，在轉子旋轉過程中，可能和器壁發生輕微的摩擦和碰擊，簡稱碰摩.聲發射技術在碰摩發生特別是故障早期診斷上有優越性.本系統的特點是沒有沿用傳統的計數、幅度、能量和持續時間等聲發射特性參數，而是在聲發射包絡信號的頻率分析中進行特徵提取.聲發射發生的過程分析和現場試驗都表明這種方法對碰摩檢測很敏感，在碰摩發生的起始階段，包絡譜中與轉速同步的周期性分量顯著增加.根據這種新的設計思想自行研製了buaa碰摩聲發射檢測儀並對此作了介紹
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