signal contrast 中文意思是什麼

signal contrast 解釋
信號對比度
  • signal : n 1 信號，暗號；信號器。2 動機，導火線 （for）。3 預兆，徵象。adj 1 暗號的，作信號用的。2 顯著的...
  • contrast : n 1 對照，對比；（對照中的）差異。2 對立面，對照物；【攝影】反差。3 【修辭學】對照法。vt 使對照，...
  1. By the result of these experiments, acoustic emission ( ae ) was chosen to use in the research. at the same time, we analyse the phenomenon of acoustic emission at the base of theory, the characteristic signal of acoustic emission which comes from the faulty bearing at the angle of application, and the expression of the characteristic signal. contrast was also made on the data achieved separately from vibrational signal and ae signal, and it is proved that ae is feasible and available to the diagnosis to the fault of the rolling bearing

    主要工作有如下幾方面：對本段前期實驗室階段採用的振動法幅值域無量綱處理進行了分析，並研製了現場所使用的滾動軸承故障檢測裝置，將無量綱參數診斷法應用於段修現場，且做了大量試驗；對于現場試驗中所出現的問題進行了分析，提出將聲發射的方法用於軸承的在線故障診斷；從理論上分析了聲發射現象，從應用的角度分析故障軸承的聲發射信號的特徵以及聲發射信號特徵的表示方法，並在實驗室中，採用振動法和聲發射法實時檢測的實驗數據進行了對比和分析，證明了使用聲發射法對軸承故障檢測的可行性和有效性。
  2. Digital signal processor ( dsp ) combined with repm bldcm, which build up a dc adjustable speed system, achieve to control multiple motor speed, positive and negative rotate, protect and fault exemine by a true single chip. design and present a electromagnetism scheme of repm bldcm used in electromotion chair drive system. select electronical components and chips in the drive board by contrast with variant drive mode. design the drive board principle picture, make a drive board pcb and debug it. design a principle picture with dsp core. workout the motor control code introduced popular programme modle. test the programme reliability and control performance by linking tms320lf2407 evm, pc, drive borad and the bldcm. the bldcm swatch is prepare experiment

    本論文闡述了方波驅動稀土永磁無刷直流電動機的原理及數學模型；設計並給出了一種電動座椅用稀土永磁無刷直流電動機的電磁設計方案；對電機採用何種驅動方式進行了對比分析；對驅動電路進行了元器件選型、原理圖設計、制板及調試；有針對性的闡述了dsp在本系統應用中所涉及到的功能模塊；設計了以dsp為核心的控制電路原理圖；以模塊化的軟體編程思想編制了電機控制軟體；通過tms320lf2407目標板、上位機、驅動板及電機的聯調，證明了系統可行。
  3. Setup functions enable user - defined adaptation of a wide variety of options such as display contrast, record printout, saving data on the computer, general code, temperature calibration, acoustic signal, date and time, id, data transfer, update fix programs, language, c f changeover, check program, battery change, diagnosis data, printing programs, seal test, service functions for maintenance

    設置功能允許使用人員對多種選項進行定義和調節，例如顯示屏幕對比度列印記錄把數據記錄到計算機上總碼溫度校正音響信號日期和時間識別傳輸數據固定程序升級語言攝氏和華氏溫度轉換檢查程序更換電池診斷數據列印程序測試密封保養用服務功能。
  4. Setup functions enable user - defined adaptation of a wide variety of options such as display contrast, record printout, saving data on the computer, general code, temperature calibration, acoustic signal, date and time, id, data transfer, update fix programs, language, screen saver, c f changeover, check programme, battery change, diagnosis data, printing programs, seal test, service functions for maintenance

    設置功能允許使用人員對多種選項進行定義和調節，例如顯示屏幕對比度列印記錄把數據記錄到計算機上總碼溫度校正音響信號日期和時間識別傳輸數據固定程序升級語言屏幕保護攝氏和華氏溫度轉換檢查程序更換電池診斷數據列印程序測試密封保養用服務功能
  5. Quorum - sensing systems can be divided into two paradigmatic classes : luxi / luxr - type quorum - sensing systems in gram - negative bacteria which produce acyl - homoserine lactone ( ahl ) autoinducers, and oligopeptide / two - component - type quorum - sensing ciruits in gram - positive bacteria which produce autoinducing peptide ( aip ) autoinducers. in contrast to the two paradigmatic quorum - sensing systems, vibrio harveyi produces and responds to an ahl - type autoinducer termed ai - 1 and a novel signal molecule named ai - 2

    Qs系統可分為兩種典型的類型，即革蘭氏陰性細菌的luxi luxr型qs系統，革蘭氏陽性細菌的寡肽雙組分型qs系統，分別以酰基高絲氨酸內酯（ acyl - homoserinelactones ， ahl ） 、寡肽（ autoinducingpeptide ， aip ）為信號分子。
  6. Besides, we can get the relationship between signal and time by dynamic susceptibility contrast - enhanced magnetic resonance imaging ( dsc - mri ) technique

    此外，打入順磁性對比劑的動態血流灌注影像，還可以得訊號與時間上的相關性。
  7. Raw thermal images acquired by pulsed thermography ( pt ) usually have low signal noise ratio ( snr ) and temperature contrast

    摘要脈沖熱像檢測中直接獲取的原始熱像往往信噪比較低、對比度較差。
  8. So the production of road signal is firstly studied. by virtue of the analysis and contrast of suspension performance, the acceleration of sprung mass, dynamic tyre load, suspension dynamic deflection and active control force are determined as the evaluation indexes of suspension performance

    進而經分析，對比，確定簧上質量加速度、車輪動載荷，懸架動撓度以及主動控制力作為主動懸架性能的綜合評價指標，以較全面地反映在控制過程中，車輛的行駛平順性、操縱穩定性及主動控制系統的能耗。
  9. Then calculate the exposure corresponding to the relationships of exposure, ratio of signal to noise, contrast, and performance of resist

    同時模擬樣品模型各臺階的真實成像條件，測量了各臺階所對應的抗蝕膜顯影速度曲線，對顯影條件作了定量分析。
  10. Potassium hexatitanate whisker was studied by lateral force microscopy ( lfm ). the contrast of the friction between potassium hexatitanate and the substrate was found. the signal of the potassium hexatitanate surface was almost flat, which showed the friction property of potassium hexatitanate surface is uniform

    利用側向力顯微鏡（ lfm ）對六鈦酸鉀晶須進行研究，發現六鈦酸鉀晶須和基體雲母的摩擦性質差別明顯，而六鈦酸鉀晶須表面摩擦性質比較均勻，信號上的差別主是由於六鈦酸鉀晶須表面的形貌起伏造成的。
  11. Phase - based optimal image thresholding can deal with poor contrast, high noise to signal ratio, complex patterns, and variable modalities in the gray - scale histograms, and it can obtain very good result

    該方法能夠很好的處理低對比度，高信噪比，內容復雜以及多種形狀的灰度直方圖的圖像。
  12. Moreover, it extensive applied the interpret way of contrast of high low frequency sectioned to eliminate the false and retain the true in the project, avoiding drop valid signal result to irrelevant disposal way. maintain use new information, contrast old information, integrated explain to forecast favorable oil and gas concentration zone, to instruct development work of yushulin oilfield

    另外，課題中廣泛應用了高低頻剖面對比解釋方法，去偽存真，避免了處理手段不當造成的有效信號丟失，堅持客觀應用新資料、對比老資料，綜合解釋，預測有利的油氣富集區，以指導榆樹林油田的區塊優選和經濟有效開發。
  13. The arithmetic expressed in this text solved contradiction between the watermark ' s transparence and the arithmetic ' s maleness, using the inlaid watermark of that arithmetic having goodly transparence, and the result of the experiment shows the arithmetic has goodly maleness to jpeg compress, noise, low channel filter wave, mosaic, signal tone up, secondary watermark, cut and zoom, especially to sharpen, strengthen contrast, strengthen edge, equilibrium, and so on, signal strengthen can hardly effect to get away the watermark

    實驗表明，本文演算法較好地解決了水印透明性與演算法魯棒性之間的矛盾，使用該演算法嵌入的水印具有較好的透明性，同時本文演算法對jpeg壓縮、噪聲、低通濾波、馬賽克、信號增強、二次水印、剪切和縮放等操作有較高魯棒性，特別是銳化、對比度增強、邊緣增強、直方圖均衡等信號增強處理幾乎不影響水印的抽取。
  14. The run stm program includes the control of scanning signal, supervise and control the running state, set the scan range, set parameters, set and acquire the clock, collect and save the image signal, etc. image manipulation functions includes : on the space of the wipe of speckle, smooth image, blur, step sharp image, laplace sharp, and automatically adjust contrast, etc

    Stm運行程序包括掃描信號控制、運行狀態監控、設置運行參數，設置並獲得時基、圖像信號採集存取等等。圖像處理功能包括在空間域上的去斑、圖像平滑、模糊、圖像的梯度銳化、拉譜拉斯銳化，對比度自動調整等等功能，在頻域空間上完成數字圖像的傅立葉變換，並討論了理想高低通濾波。
  15. Second, introduce the dyadic wavelet analysis, and use it realized the signal monitor and analysis to the turbine compressor, obtained the detail signal and approach signal at different frequency parts of the compressor s original signal. one type of electromotor that made in china is choose, and it s noise is tested. the noise signal is analyzed by wavelet analysis and spectrum analysis. several high spectral peaks that make people hearing disameniry are found. by contrast with theory calculating results and farther analysis. the cause that producing these spectral peaks is located

    其次，介紹了二進小波分析，並應用二進小波分析實現了對透平壓縮機信號的監測分析，得到了壓縮機原始信號在不同頻率段分解的細節信號和逼近信號。用小波分析和譜分析相結合的方法對某國產電機的噪聲進行了分析，找出了人的聽閾不閱的幾個高譜峰位置，進行了空氣動力噪聲計算，通過與理論計算結果進行對比分析，進一步找出了產生該頻閩譜峰的幾個原因，第三，介紹了諧波小波和分形的基本原理。
  16. A functional mr technique was used in which a bolus of gadoteridol contrast agent was injected rapidly during the collection of image data, resulting in contrast - induced signal loss in proportion to cerebral blood volume

    功能磁共振技術，即在成像收集數據的過程中快速注射一支造影劑，可測試腦血容量分配中對比感應信號的遺失。
  17. Traditional image enhancement technique will amplify interfering signal and scintillation at the same time, while grey scale accelerating circuit and contrast enhancement technology have successfully solve this problem

    傳統的影像增強技術會使干擾信號和閃爍也同時被放大，灰階加速電路和對比度增強技術成功地解決了這個問題。
  18. Two wedge interferometers are designed that the thickness of one is higher than the other. so when the incident coherent light through the interferometers can acquire two fringe patterns which having space shift, but the incident incoherent light only result in consistent intensity signal. through a differentiating amplifier, two signals subtract which can eliminate noise of background and result in higher contrast ratio fringe signals. this method largely improves the system and the ability of detection. the spacing of line fringes is a function of incident laser wavelength, by analyzing, we can extract the wavelength of incident laser. the optical unit analyzing and results also simulated with matlab

    當背景光入射時，直接穿過干涉儀，僅發生強度的衰減，在兩個探測平面上產生幅度基本一致的灰度信號，通過差分放大器，相消為零，從而抑制了背景干擾。當激光信號入射，穿過干涉儀時受到調制，在探測平面上產生干涉條紋。通過所設計的存在平均厚度差的雙楔形干涉儀，兩路干涉條紋圖案出現相對移位：在兩個探測平面對應的位置上，一路出現亮紋，另一路出現暗紋。
  19. Print contrast signal

    印字反襯信號
  20. The wavelet analysis is applying widely to pure mathematics, applied mathematics, signal processing, speech recognition and synthesis, automation processing and image analysis etc. the key advantage of the wavelet analysis is that, in contrast to the conventional fourier analysis, it can be localized in the time and frequency domain simultaneously

    小波分析已經廣泛應用於理論數學、應用數學、信號處理、語音識別與合成、自動控制和圖像處理與分析等領域。同傳統的傅立葉分析相比，小波分析的最大優勢在於可以同時在時頻兩方面實現局部化分析。
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