頻率分量 的英文怎麼說
中文拼音 [bīnlǜfēnliáng]
頻率分量
英文
frequency components-
This article takes the lagrange equation as the principle, establishes mathematics modeling to the inertia brake vibration when it brakes, then simulates it with matlab. this paper educed the relation equations between, which are the inertia brake ' s friction coefficient of the brake ring and the friction disk, the mean radius, the braking force, rotation inertia of the driving top and the spline shaft, spiral climbing angle of the brake ' s concave - convex helicoid, the mean effort radius of the concave - convex helicoid, elasticity coefficient of the spring, quality of the driving top and the spline shaft, rotations inertia of the brake ' s rotation part besides the driving top and the spline shaft, suppresses sleeve. provides the theory basis for the inertia brake structure optimization
本文以拉格朗日方程為理論基礎,對慣性制動器在制動時的振動進行數學建模,然後用matlab對其進行模擬,得出了慣性制動器在制動時振動角頻率分別與制動環和摩擦片之間的摩擦系數、制動力的平均半徑、主動頂和花鍵軸的轉動慣量、慣性制動器的凹凸螺旋面的螺旋升角、凹凸螺旋面平均作用力的半徑、彈簧的彈性系數、主動頂和花鍵軸的質量、慣性制動器除主動頂和花鍵軸外其他部分的轉動慣量和、頂壓套的質量等慣性制動器各零部件的物理參數之間的關系,為慣性制動器的結構優化提供了理論依據。When we measure the kurtosis of a distribution, we are measuring its peakedness.
度量一條頻率分佈曲線的尖削度就是度量其頂部的峰態。In this paper, on the basis of absorption of achievements of the research on auditory physiology, an auditory model simulationg the peripheral auditory system and part of the central auditory system is set up. the model is made of the fitlters presenting the characteristics of the basilar membrane for analyzing the voice signals, the half wave rectification modeling the inner hair cells and energy transfer of nerve fiber
在吸收聽覺生理學研究成果基礎上,建立了一個模擬外圍聽覺系統和部分中樞聖經系統功能的聽覺模型。模型由表徵基底膜的頻率分析的帶通濾波器組、內毛細胞的半波整流特性和神經纖維的能量轉換特性組成,該模型可以作為前端處理來提取語音信號的自相關圖譜。The spectrum analysis showed that only the balance signals require processing by digital filter, and only inherent frequency components of balance, bracket and model system of the balance signals will require filtering, but the resonance components of test force oscillatory are. saved as more as possible
數據的頻譜分析結果表明只須對天平測量信號做數字濾波處理;濾波原則是僅需濾掉天平、支架、模型系統的固有振動頻率分量,同時盡可能多地保留實驗強迫振動的各階諧振信號。The short - baseline interferometer ’ s angle measurement accuracy is influenced by phase difference measuring accuracy, the base length measuring accuracy, the system operating wavelength ( frequency ) and so on, the article analyzes the existing theory, and emphatically analyzes the influence of base length measuring accuracy to the precision of angle measurement
短基線干涉儀測角精度受相位差測量精度、基線長度測量精度、系統工作波長(頻率)測量精度等因素的影響,文中,在對原有理論進行分析的基礎上著重分析了基線長度測量精度對系統角度測量精度的影響。It makes the deduction on design tidal level process more reasonable than ever. finally, taking into account the observed data of tidal level are much more integrated than observed data of tidal discharge and the correlative relationship are established based on large numbers of samples. then, the sub stage maximum tidal discharges and tidal velocities are obtained according to the regressive equations and the observed tidal level, and the sub stage design maximum tidal discharges and tidal velocities are estimated by way of frequency analysis
最後,針對橋位河段實測潮流資料短缺而潮位資料相對完整的實際情況,基於大量樣本建立了潮流量與潮汐要素的相關關系,利用實測長系列潮位資料得到分期最大潮流量、潮流速系列,經頻率分析確定了分期設計最大潮流量、潮流速。In order to avoid spectrum error due to energy leakage, the thesis research on identification of parameters of two close frequency components in discrete spectrum analysis, and simulation result shows the validity of the method
針對由於能量泄漏造成的頻譜誤差,深入研究了密集頻譜的頻域參數識別法,從理論上加以推導,並通過模擬證明了該方法的有效性,可以識別1個頻率解析度以內的兩臨近頻率分量。The precipitation frequencies is analysed according to 1956 ~ 2000 years of rainfall record series in baoding area. the features of distribution of rainfall are detailed evaluated. firstly, the distribution of monthly precipitation is not even. for instance. the annual rainfall amount is about 548mm in whole year, about 80 % of them in summer season. secondly, yearly variation of rainfall is greater. thirdly, the abundant years usually are followed by short years, but the important changes have taken place in the last decades. before 70 ' s the abundant years took the dominant position, from the 70 ' s to the middle of 80 ' s the short years took place more frequently than ever. after the later of 80 ' s, the short years hold the main position. the above knowledge is instructive for guiding the rainwater resources effective utilization
本文利用1956 2000年保定市的長系列降雨資料,對保定市降水量進行了頻率分析、年內變化分析和多年變化分析,明確了保定市降水量年內、年際間的變化情況:保定市降水量年內分配不均,汛期( 6 - 9月)占年降水量的81 。保定市降水量年際間變化大,豐水年和枯水年交替發生, 70年代以前以豐水年段為主; 70年代到80年代前期降水量豐枯交替頻繁,總的接近於枯水年段; 80年代後期至今以枯水年段為主。這種降水分佈規律對農業生產雨水資源的高效利用具有重要的指導意義。Lt is well anown that the multi ? ath effeet results in signal fading and intersymbol interference ( isd, wnich causes great difficulhes in pewces of transndssion in underwater acoushc cotnmnication. in this papef we used frequency diversity method to overcome the problem of signal fading, and used the frequency - hopping method to ebonate the isi caused by multi - path
水聲通道多途特性引起的信號衰落和碼間干擾是影響水下通信質量的主要因素,採用頻率分集技術可以處理幅度衰落,而跳頻技術則可以簡單、有效地抗多途引起的碼間干擾。So the pipe system sends out noise because of resonance. especially the frequency 250hz of pulsating water is in close proximity to natural frequency of pipe, so the 250hz is a dangerous frequency to the pipe system. there is another reason why the noise is reached to 110db ( a ) in pump room that the noise is magnified by the cistern because of the resonance of cistern
特別是激勵頻率為250hz的頻率分量恰好與管道系統的固有頻率相接近,其引起的管道振動對噪聲的貢獻最突出,同時也與水泵房房腔的固有頻率相接近,從而引起房腔共鳴發聲,使噪聲進一步被放大,以至於噪聲最大處高達105db ( a ) 。A new method is presented. the travel time, including the time delays associated with overland folw pathways, is obtained. it is expected that the hillslope velocity and the stream velocity are different, and different equation is used. in the method, the fact that velocity increases going downstream in river systems is taken into account. after the travel time of each cell being calculated, the frequency distribution of the times of arrival of individual water droplets at the catchment outlet - giuh, is obtained
提出了一種匯流時間計算方法,匯流時間中包括坡地漫流時間和河道匯流時間。方法中坡地單元的匯流速度與河道單元的匯流速度採用不同的計算公式,同時考慮流速沿河道向下游的變化。流域中每一個網格單元的匯流時間得到后,將其看作隨機變量,進行統計分析后,得到匯流時間的頻率分佈? giuh 。The common path defocusing 4f shearing interferometer in the system was constructed, which is fit for the dense plasma measurement. the advantages of this system consist in its stability and easy adjustment as the common path system and respective adjustability of shearing amount and stripe spatial frequency as m - z interferometer as well
設計了基於共光路結構的離焦4f剪切差分干涉儀,該干涉儀同時具有m - z型干涉儀的剪切量和條紋空間頻率分別可調的優點以及共光路結構的穩定性和易於調節的優點,使得在稠密等離子體的測量中,系統參數可以兼顧小的剪切量和大的條紋空間頻率。This thesis makes the analysis of the methods of frequency measurement, which is the main function of the universal counter, and decides to use the gate modification method to measure frequency
本文對計數器的主要功能之一,頻率測量方法進行了分析,提出採用閘門時間修正法進行測頻,降低了量化誤差的影響。Choose the frequency from 14 to 16 bark as the embedding positions which below the masking threshold. then change the dct coefficient with the certain strength of
選用中低頻14 16bark段在掩蔽閾值以下的頻率分量作為嵌入點,對該嵌入點的dct系數以一定嵌入強度作修改來實現秘密信息的嵌入。This dissertation put forward a method of eliminating noise and reconstituting broken wires signal and inquired the space - frequency range of the signal ripple resulted from tensile stress on the mfl signal curve
提出了去除干擾重組斷絲信號的方法,分析了漏磁曲線上應力波紋的空間頻率分量。Fourier transform method use high order frequency to analyse and imitate nonlinear and non - stationary data. emd method based on local characteristic time scale of the data is more fit to analyse nonlinear and non - stationary data than fourier transform method
Emd基於信號的局部時間特徵尺度分析原信號,克服了傅里葉變換用高次諧波頻率分量擬合非線性、非平穩信號的缺點。And then the stability and the stable error response of the dpll are analyzed. there is an obvious doppler shift frequency offset in the received signal with flight at a high speed, in the dissertation the uniform sampling second - order dpll is used to remove the frequency bias for its excellent high - pass characteristic of the error transfer function
由於高速飛行的遙測目標在接收信號中會出現較大的多普勒頻率分量,而典型均勻采樣二階數字鎖相環dpll ( digitalphase - lockedloop )的誤差函數具有高通特性,所以本文提出一種利用其高通特性來去除多普勒頻率分量的新方法。Based on frequency - spectrum - transformation, this algorithm first changes acceleration spectrum into displacement spectrum, then calculates its amplitude, angular frequency and initial angle related to every displacement spectrum, finally sums up all the displacement components and forms the time course of the measured vibration
該方法採用頻譜轉換法,首先將加速度譜轉換成位移譜,再計算出位移譜中每個頻率分量對應的幅值、圓頻率和初相角,最後對各位移分量進行疊加得到振動位移的時間歷程。Chapter 3 : we find a family of solutions of the paraxial wave equation that represents ultrashort pulsed light beams propagation in free space. these pulsed beams have an arbitrary temporal form and a nearly elegant hermite - gaussian cross section, which pulsed beams we call the ultralshort pulsed elegant hermite - gaussian beams
此脈沖光束解的每個頻率分量都是eleganthermite - gaussain光束,時間脈沖的形狀是任意的,具有相同的衍射距離參數,並且可以描述短於一個光學周期的超短脈沖。Then the paper presents two important concepts on wavelet transform : multi - resolution analysis and wavelet package analysis. last, the paper introduces the application of wavelet transform on power quality analysis, especially on the research of voltage flicker. we can get the magnitude and frequency of the embed signal by mra
最後介紹了小波變換在電能質量分析中的應用,重點討論了電壓閃變問題,用小波多解析度分解和子帶濾波方法對電壓閃變的包絡信號進行分解,檢測出包絡信號中的各個頻率分量及其幅度。分享友人