fluctuation noise 中文意思是什麼

fluctuation noise 解釋
起伏噪聲
  • fluctuation : n. 1. 波動，起伏，漲落；【物理學】脈動。2. 動搖不定，躊躇。3. 【生物學】彷徨變異。
  • noise : n 1 聲音，聲響。2 叫喊；嘈雜聲，噪音；喧鬧聲；吵鬧，騷動，騷擾。3 〈古語〉謠言，風聲。4 〈美國〉...
  1. In this thesis, flow regime identification and malfunction diagnosis of fluidization were studied with fractal technology, the presented methods for both flow regime identification and malfunction diagnosis were proved of effectivity. main achievements are as following : 1. fractal brownian motion ( fbm ) was made from gauss noise and compared with pressure fluctuation signal of gas - solid fluidization, which demonstrated the similarity between the fbm and the signal

    在通過fbm （分數布朗運動）數據模擬證明了氣固流化床壓力波動信號與分數布朗運動是相似的基礎上，提出了用分數布朗運動來模擬氣固流化床壓力波動信號，並採用r s分析法從信號時間序列中提取出hurst指數，通過分析信號hurst指數值對流化床流型和結塊故障進行了研究。
  2. The experimental results showed that the substrate of pyroelectric sensor could significantly affect the detectivity. the porous silicon dioxide and pet plastic film substrate could effectively decrease the thermal conduction and the thermal fluctuation noise of the pyroelectric element, increase the voltage responsivity and the detectivity obviously

    結果表明，多孔氧化硅和pet塑料可有效降低熱釋電元件的對外熱傳導，明顯提高傳感器的電壓響應率和降低熱釋電元件的熱噪聲。
  3. By calculating parameters including the link length, the azimuth angle, the elevation, the optical power that the inter - satellite optical cdma communication system will receive, the variation range of the azimuth angle and the elevation from the optical antenna of atp are understood well. by analyzing the factors to impact bit - error - rate ( ber ) from the received power, multi - user disturbing, background noise, wavelength, bit rate etc, measures to guarantee high performances of the system are obtained, especially those for smoothing the fluctuation of the received optical power from host platform vibration

    分析研究了衛星光cdma通信系統中衛星仰角、方位角和距離，給出了探測器能夠接收到的光功率以及atp子系統捕獲及跟瞄的范圍;對衛星光cdma通信系統性能模型和基於衛星振動系統性能模型的研究，分析了多用戶干擾、接收光功率、背景光噪聲、振動偏差以及碼速率對系統誤碼率的影響，給出了相應的改進措施。
  4. Finally, coupled chaotic system is realized to measure the fluctuation of magnetic field. meanwhile, it is proved that coupled chaotic system could be used to reduce noise. this experiment also finds an efficient approach for noise reduction in chaotic measurement

    最後把耦合混沌測量系統用於磁場測量中，實現用多個混沌電路耦合的系統測量微弱的磁場變化，證實了耦合混沌系統有較好的抗干擾能力的結論，為混沌測量的抗干擾措施找到了一條比較有效的途徑。
  5. The tooth shape of gear pump has important influence on machining and characteristics of pumps, such as flow rate, fluctuation rate and noise etc. first, the working principle of tatsuno combined pumps is analyzed in this article

    齒輪泵的齒形對泵的加工、性能（如：流量、脈動率、噪聲）等有很大的影響。本文首先分析了進口tatsuno組合泵的工作原理，並進一步分析了其採用一對雙圓弧齒輪的優缺點。
  6. Due to temperature performance of fbg, a reference fbg is adopted to compensate temperature and the compensation principle is expounded. moreover, this scheme not only realizes temperature compensation but also reduces repeatability error of ffptf and errors from power fluctuation of light source, noise of pd and noise of electro - circuit. in the end, temperature and strain performance of fbg is tested and

    基於光纖光柵的溫度響應特性，提出用一個參考光柵來進行光纖光柵傳感陣列溫度補償的設計方案，並論述了其補償原理，證明了該方法的可行性；同時可以看出，該方法不僅可以實現溫度補償，也可以減小光纖f - p可調諧濾波器的重復性誤差以及光源功率波動、探測器噪聲和電路噪聲等引起的誤差。
  7. It is clear that the colored nature of the noise can reduce the fluctuation in the laser system

    由此可見，噪聲的有色性可減少激光系統的漲落。
  8. In mis thesis, we report a laser with maximum output of 4. 16w, intensity fluctuation less than 0. 5 % ( rms ) in an hour, and frequency noise less than 340khz

    本文報道了單頻輸出4 . 16w ，長期功率波動范圍小於0 . 5 ，頻率穩定性優於340khz的激光器。
  9. In the case of uncorrelated noises, it is shown that only the fluctuation of degradation reaction rate can induce a switch process, and the mean first passage time ( mfpt ) between the high concentration state and low concentration one is decreased when the noise intensity of degradation reaction rate is increased

    可以看到源於蛋白質基本合成率的噪聲強度不能引起基因狀態的轉變（即基因的開關）而源於降解率噪聲強度則能夠實現這種開關。當進一步研究在降解率波動作用下基因從一個態躍遷到另一個態的平均首通時間（ mfpt ）時可以看到此時隨著這個波動強度的增加， mfpt是單調遞減的。
  10. In electronics, a circuit for converting ac voltage to low voltage dc in such a way that the output is regulated to minimize noise and voltage fluctuation

    在電子技術中，把交流電轉換成低電壓直流電的一種電路。這種電路的輸出是經過調整的，使它的噪聲及電壓波動都很小。
  11. This article takes hanging off and wide fluctuation of transmition velocity of adsl as example, then analysis centers on the discerte multiple tone and the principle of channel load assignation. from analysis above article points out the root of adsl being sensible of noise signal. at last, reserches effects that window function and barrier effect on frequency and adopts fft to work out the noise power of adsl

    本文以電信現在推出的adsl傳輸中鏈路經常掉線和傳輸速率經常大范圍波動為例，重點分析了adsl所使用的dmt調制方式和注水演算法分配通道載荷方式原理，由此指出adsl對噪聲信號敏感的根源，在得到問題的根源之後，分析了窗函數和柵欄效應對頻譜的影響，採用fft方法計算adsl線路的噪聲功率譜，為adsl線路測試提供了可靠的理論依據。
  12. To drain continuously with low noise, without being affected by the fluctuation of the pressure

    不受壓力波動的影響，連續排水，噪聲小。
  13. Because mz interferometric optical fiber gyroscope has bigger nonreciprocal phase, the system thermal stability, polarization noise and the error caused by the fluctuation of light source is particular analysed, some effective methods is proposed such as : using the " quasi - white - light " interferometry and the fiber polish technology accurately to control the fiber length, using depolarization light to minish the polarization error, and using temperature control, optical power control and depolarizer to stabilize the output of the light source

    結合mz干涉式光纖陀螺的存在較大非互易相移的特點，著重從其溫度穩定性、偏振噪聲以及光源波動引起的誤差三個方面分析了抑制噪聲、提高檢測精度的方法，提出了：採用「準白光」干涉測量法結合光纖研磨技術精確控制光纖長度差的辦法；採用非偏振光源抑制偏振噪聲的方法；採用溫度控制、功率控制以及消偏器實現穩定化陀螺光源的方法。
  14. Firstly, the current testing localization in the detection of electric bow is analyzed and the new system ' s whole construction developed in this thesis is introduced ; in the 2rd chapter, the embedded 110v dc power supply is analyzed and constructed, and with experiments, some dissonant results such as the fluctuation of output pwm ( pulse width modulation ) pulses, the power noise added to output voltage, and the drop of output voltage have been analyzed and the problems have been broken down one by one ; in chapter 3, stepping motor ' s drive has been systematically dissertated, and combing stepping motor ' s subdivided drive technology, the author develops an intelligent mini - step driving circuit using a main - sub microprocessor structure, which is validated in the hybrid stepper based system ; in the 4th chapter, liquid crystal driving and displaying technology is specified in detail, with one sort of lcd modules ( tlm12864h ), the author develops an feasible circuit for the new testing system, designs a menu mode based program struc ture and brings here some programming codes using franklin c51 programming language ; in chapter 5, the above built system is used in the electric bow ' s practical detection, and the differentiating rate of this system is analyzed

    論文首先分析了目前機車受電弓檢修方式存在的局限並概述了本論文研製的受電弓測試系統的體系架構；第二章對系統內置110v直流控制電源進行了分析和設計，結合試驗對輸出pwm振蕩、輸出電源噪聲大、輸出電壓下跌等現象進行了分析並提出解決措施；第三章論述了步進電機的驅動，結合步進電機微步驅動技術研製了基於上下位單片機組的混合式步進電機智能驅動電路，並在試驗中得以驗證；第四章詳述了液晶驅動及顯示技術，利用一款液晶顯示模塊tlm12864h研製出本系統用液晶顯示電路，設計了菜單式的程序結構並以franklinc51編程方式給出部分子程序代碼；第五章則將以上構建的整個系統應用在機車受電弓的實測中，並對測試解析度進行了分析。
  15. When the two - dimensional decoupling theory is applied to a single - mode laser system, it is shown that there is relatively large fluctuation in the phase when the laser undergoes from thermal light to coherent light. it is shown that increasing the noise correlation time t can also reduce the fluctuation in the phase of the laser light

    將二維退耦理論應用到單模染料激光系統中時，我們還發現，當系統運行在從熱光場到相干光場的過渡過程中時，系統的位相存在相對較大的漲落，增加噪聲關聯時間可以抑制激光場的位相漲落。
  16. The units " vibration, noise and pressure fluctuation in the draft tube are measured in wanjiazhai hydro power station. eighteen measuring points were arranged on the 2 # and 5 # units respectively

    尾水管壓力脈動以及噪聲等重要參數進行測量分析，試驗包括2 #機組和5 #機組各18個有效測點
  17. Comparison of the folt induced by colored noise in intensity and phase fluctuations shows that the number of the extremum in the steady state distribution is changed from one to two, and then to three successively for colored noise intensity fluctuation

    對色噪聲強度漲落和色噪聲位相漲落誘導的一級相變類比進行比較表明，色噪聲強度漲落情形下，定態分佈函數的極值點由一個變為兩個，再變為三個。
  18. When only the intensity fluctuation is included in the incident light with different parameters of incident intensity and phase, the parameter plane of the folt shows interesting behavior with the changes of colored noise correlation time and multiplicative noise intensity

    當入射光僅包含強度漲落時，在入射光強度和位相參量控制下，色噪聲相關時間和乘性噪聲強度取不同值時發生一級相變類比的參數區域。
  19. The air inlet noise is one of the major aerodynamic noises of the diesel generator as a result of the pressure fluctuation caused by the periodic opening and closing of the inlet valve

    進氣噪聲是柴油機的主要空氣動力噪聲之一，它是由進氣門的周期性開啟與閉合而產生的壓力起伏變化而形成的。
  20. Various important effects brought by noise in nonlinear systems, such as noise inducing phase transition, stochastic resonance, nonequilibrium fluctuation - induced transport, open up a wide range of applicability of the stochastic theory

    =非線性系統中噪聲所產生的各種重要效應，如噪聲誘導相變、隨機共振現象、非平衡漲落誘導輸運等為隨機理論開辟了十分廣闊的應用前景。
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