故障閾值 的英文怎麼說

中文拼音 [gùzhàngyùzhí]
故障閾值 英文
fault threshold
  • 故 : Ⅰ名詞1 （事故） event; incident; happening; accident 2 （原因） cause; reason 3 （朋友; 友情） fr...
  • 障 : Ⅰ動詞（阻隔; 遮擋） block; hinder; obstruct Ⅱ名詞（遮擋物） barrier; block; obstacle
  • 閾 : 名詞1. [書面語] （門坎兒） threshold; doorsill2. （界限; 范圍） threshold
  • 故障 : hitch; breakdown; stoppage; fault; faulting; accident; blunder; bug; conk; failure; impairment; i...
  1. This thesis studies the law of affecting de - noise result and the selection of the threshold and the wavelet function, the combination of wavelet and fft in the fault diagnosis of turbine - generator sets : by the de - noise anslysis of blocks and sin signals, concludes : to blocks signals, usually adopts soft threshold ; the law of affecting de - noise result is when use wavelet auto - de - noise, with the increasing of decomposed level, the de - noise result becomes worse while the level blow the 3, when the level above 3 and when uses wavelet packet, it is the other way round ; the best de - noise methods of the signal is that uses " dbl " wavelet function, three level, soft and " rigrsure " threshold

    本文研究了分解層數對消噪結果影響的規律和閾值、小波函數的選取，結合小波分析與fft分析診斷汽輪發電機組的故障。通過對brocks和sin兩信號的分析，得出：對blocks信號進行分析一般採用軟閾值；分解層數對消噪結果影響的規律為用小波自動降噪在分解層數小於3時，隨著分解層數的增加，消噪結果變好，反之，則變差，用小波包降噪時隨著分解層數的增加，消噪效果變好；適宜選用dbl小波軟rigrsure閾值自動消噪。
  2. Fast algorithms of both discrete and orthonormal wavelet and wavelet packet coefficient are diagrammatized to be introduced. daubechies wavelet is applied to help to discuss the application and test on signal filtering and noise reduction with the principle and threshold implementation ; the basic principle to pickup the fault characteristics is introduced mainly about the relations between the maximum module and signal saltation point and how to characterize the saltation point with lipschitz exponent

    展示了離散正交小波變換的mallat快速演算法和小波包系數分解的快速演算法；重點應用daubeches小波探討了小波變換在信號濾波去噪中的應用和實驗，闡述了其基本原理和通過閾值化處理實現濾波的具體方法；探討了用小波變換進行故障特徵提取的原理，說明了小波變換模極大值和信號突變點之間的關系以及怎樣用李氏指數來表徵突變點的性質。
  3. An automated de - noising algorithm based on the energy of wavelet packet not donoho ' s threshold algorithm is established. a gear feature vibration signal extraction method using the wavelet packet energy is proposed, which can separate gear meshing vibration, noise vibration and gear fault vibration signal from the original gearbox case vibration signal. basis pursuit ( bp ) algorithm is introduced into the filed of mechanical signal de - noising and feature extraction for the first time

    第三章擺脫了donoho的閾值消噪思想，從能量的角度建立了基於小波包的自動消噪演算法；提出基於小波包能量分佈的齒輪故障特徵信號提取方法，可以將齒輪嚙合振動信號、干擾振動信號以及故障沖擊振動信號從原始齒輪振動信號中分離出來；首次將基追蹤消噪演算法引入到機械故障信號的消噪與特徵提取上，通過對齒輪故障信號的消噪，表明了它的有效性，並對影響該方法實際應用效果的因素進行了全面的分析，同時也指出了該方法存在的局限性。
  4. Threshold logic of a decision function is used to evaluate the generated residual so as to enhance the robustness of fault detection systems

    採用閾值邏輯方法評價所產生的殘差信號，以提高故障檢測系統的魯棒性。
  5. Through the application researches on 6135 type diesel engine, the feasibility and diagnosis accuracy of the method that using 0. 5 order torsional vibration to determine the fault threshold value was verified

    以6135柴油機為對象的應用研究驗證利用0 . 5諧次扭振確定故障閾值方法的實用性和診斷準確性。
  6. ( 4 ) since there is no perfect theoretical guide, the characteristics of orthogonal wavelet, semi - orthogonal wavelet and biorthogonal wavelet in signal decomposition and reconstruction are compared, and the conclusion of the study demonstrates that semi - orthogonal wavelet is a good wavelet for fault diagnosis in tilting control system of tilting train. a new approach is presented for deciding the fault threshold. ( 5 ) a generalized wavelet neural network is put forward by integrating wavelet analysis with neural network

    （ 4 ）針對小波基的選擇缺乏完善理論指導的實際情況，通過對常用的正交、半正交、雙正交小波基提取信號特性的比較，確定出了適合擺式列車傾擺控制系統故障診斷的小波基? ?半正交小波基，並提出了一種新的確定故障檢測閾值的方法，可以快速地檢測出故障發生時刻。
  7. Some issues associated with the algorithm such as wavelet function selection, analysis level, and boundary treatment and so forth have been discussed. the stein self - adapting threshold denoising method is used to the signal pretreatment, thus the snr and resolution are improved

    採用基於stein無偏似然估計自適應閾值選擇原理的實用消噪方法對故障信號進行預處理，在改善信噪比的同時，又提高了對突變信息的解析度。
  8. The faults in the automotive engine control systems can be reliably diagnosed by the proposed method through suitable choice of the threshold for the residual signals of the uifdos

    合理選擇殘差信號的閾值，能夠可靠地診斷汽車發動機電控系統負載不可測且存在隨機干擾時的故障。
  9. This thesis is concerned with fault detection and isolation problem for dynamic systems such as norm - bounded uncertain systems, state - delayed uncertain systems, linear parameter - varying systems with time delays, time - delay systems with markovian jump parameters and nonlinear systems by using fault detection filter, threshold selection method and linear matrix inequalities

    本論文研究了動態系統的魯棒故障檢測與分離問題，基於故障檢測濾波器和閾值邏輯方法，採用線性矩陣不等式技術，研究了范數有界不確定系統、時滯不確定系統、時滯lpv系統、時滯馬爾可夫跳躍系統、非線性系統的魯棒故障檢測與分離問題。
  10. During the course of develop fault diagnostic method, the influence to the training circle number with network structure 、 learning rate 、 initial weight value & door value etc are discussed. by comprehensive analyses and comparing, the comparatively rational value is adopted to be network ' s eigenvalue

    在制粉系統故障診斷樣本訓練過程中，本文作者探討了網路結構、學習率、初始權值閾值等因素對訓練速度的影響，為選取合理的網路參數提供了依據。
  11. After installation completes, if any resource including sql server fails for any reason, resources are either restarted on the same node, or the group moves to an available failover cluster node, depending on the failover cluster threshold configuration

    安裝完成後，如果由於任何原因而導致任何資源（包括sql server ）出現故障，則將在同一節點上重新啟動資源或者組移動到可用的故障轉移群集節點，具體取決于故障轉移群集閾值配置。
  12. ( 9 ) a method, which combines the neural network and the genetic algorithms, is advanced. it uses the genetic algorithms to improve the weight and threshold of the neural network first

    （ 9 ）提出了以遺傳演算法對神經網路的權值和閾值進行優化並用神經網路細調的多故障診斷方法。
  13. The major contents of the paper were as follows : 1 fuzzy method for the fault diagnosis was researched. the fuzzy diagnosis model and the multiple - layer fuzzy model based on threshold and maximum rules for fuzzy diagnosis were built

    工作的主要內容有： 1 、研究了故障的模糊診斷方法，以閾值和最大隸屬度為判斷準則構建了模糊綜合診斷模型和模糊分層診斷模型，對故障信號進行診斷。
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