engine spectrum 中文意思是什麼
engine spectrum
解釋
能譜-
The bubbles in diesel engine fuel injection system are studied. the frequency structure of pressure wave with bubbles bursting ， as well as relation of types of bubbles and frequency spectrum ， is expounded
採用頻譜分析法對柴油機燃油噴射系統中的汽泡進行了研究，分析了汽泡潰滅造成壓力波振蕩的頻率結構特性，並論述了汽泡與壓力波及其頻譜的關系。 -
Wavelet analysis is used to translate noise signal of the engine into time - frequency domain. selecting appropriate frequency band to pick up and making its envelope spectrum, then two feature frequency - 0. 5x speed frequency and 2x speed frequency that represent the abrasion condition can be found. in addition, a new diagnosis method of image processing technique is proposed
利用小波分析將測得的機體噪聲信號變換到時頻域，選擇合適的頻帶加以提取並進行包絡譜分析提取包含特徵頻率的包絡，通過分析提取后的0 . 5倍頻和2倍頻分量，發現兩個特徵頻率可準確反映主軸承的磨損狀況。 -
Based on the different work states of engine, the engine vibration signal collected in it ' s steady work conditions is analysed by the technique of confrequency spectrum ; the signal related to the fast run - up state is processed by stft and wavelet analysis
根據發動機的工作特點，將振動信號分為穩態振動信號和過渡態振動信號。穩態信號採用傳統的傅立葉分析方法，過渡態信號採用了短時傅立葉變換和小波方法。 -
The sound intensity measurement is carried out for the exterior radiation noise of an automobile and by means of spectrum and correlation analysis of noise signal, an investigation into the application of sound intensity measurement to vehicle noise control is presented. for the main noise sources of automobile - noise of the engines made a distinguish analysis technology and various noise control measures. it is beneficial reference to reduce noise of engine
本文依據聲強測量的原理，以汽車噪聲源的分析為應用對象；通過對汽車的車外輻射噪聲進行了聲強測試並對噪聲信號進行頻譜分析和相干分析，研究了聲強測量系統在汽車噪聲控制中的應用問題；論述了汽車發動機噪聲的鑒別分析技術和各種控制措施，為發動機噪聲的降噪工作提供參考。 -
In order to carry out the acoustic and aerodynamics performances tests, seven resonators are designed and made, and a specialized engine intake silencer and exhaust silencers test bench was designed. the tests and analysis are performed as well. on the basis of the intake noise spectrum of sc7080a, a three - parallel - connected resonant silencer is designed, and that has efficiently controlled the acceleration noise of sc7080a
在此基礎上設計並加工了兩類七個共振型進氣消聲器，研製了發動機進排氣消聲器性能測試實驗臺，開發了發動機進排氣消聲器聲學性能測試軟體，並在該實驗臺上測試了所設計的進氣消聲器靜態工況下的傳聲損失，從實驗的角度研究了共振腔的尺寸、形狀對其共振頻率的影響及其趨勢。 -
The research and the application shows that the resonator geometrical parameter has effect on its resonant frequency, and the one dimension ( 1 - d ) model can predict the frequency accurately. therefore, if an engine intake noise spectrum is known, one can design a helmholtz resonant silencer to control the intake noise
一維軸向傳播理論能夠準確預測共振腔的共振頻率，從而為正確設計出針對發動機進氣噪聲頻率特性的helmholtz共振型進氣消聲器提供依據，達到有效控制發動機進氣噪聲的目的。 -
Using this system the faults of engine rotor will be finded out by surveillance vibration wave in time domain and power spectrum real - timing or analysis the fringe band of tooth - frequency of planetary - reducer
在wj6發動機生產試車臺上，實現了通過實時給出機匣振動時域、頻譜波形，分析及辨識發動機主轉子系統故障。 -
It is stressed in this paper the analysis methods used in vibration faults of average power spectrum and cepstrum, based on the fast fourier transform algorithm, and development of the vibration signal analysis system in test - driving of wj6 engine, involved the technic of software or hardware
文章重點給出基於fft技術的功率譜和倒頻譜分析方法、振動信號分析系統的設計和實現，討論了相應軟體開發中所涉及的技術問題。 -
To solve cylinder liner crack problem of a certain large marine diesel engine, the crack was studied and analysed being aimed at the cylinder liner which created the crack by means of colouring crack detection, electron microscope scanning, energy spectrum analysis, chemical composition analysis and so on. also the temperature distribution and the stress condition of the cylinder liner were researched and analysed utilising measurement on board ship and finite element analysis method. finally the main causes of the cylinder liner crack were synthetically analysed and determined
為解決某大型船舶柴油機氣缸套裂紋故障問題，利用著色探傷、電子顯微鏡掃描、能譜分析、化學成分分析等方法對其裂紋進行了研究分析；並利用實船測試、有限元分析等方法對該型缸套的溫度分佈狀況、應力狀況，進行了研究分析.確定了缸套開裂的基本原因
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