起振現象 的英文怎麼說
中文拼音 [qǐzhènxiànxiàng]
起振現象
英文
einschwingerscheinung initial transient effect-
Based on the research of the characteristics of piezoelectric ceramic, this paper presents the analysis of the movement of the stator surface points and work principle of motor. this paper describes a theory about the influence of the ultrasonic vibration on the frictional properties of ultrosonic dring, and finds that the horizontal vibration produces friction driving force and vertical vibration affects horizontal driving effect
並且對行波型超聲波電動機的減摩現象進行了研究，發現在接觸區定子表面上一點的水平振動產生摩擦驅動力，垂直振動只起影響水平驅動效果的作用，得出垂直方向超聲振動具有減振作用是引起超聲驅動動摩擦系數降低的原因。The way of taking one nth out of capacitor ' s the first harmonic capacitive reactance as its nth harmonic impedance is verified whit the data from tang7c. according to the approximately estimating method, the first harmonic impedance of 220kv system is calculated. on the basis of the models, this paper gives the harmonic equivalent circuit of substation and gives the b ( n ) function of the harmonic time n. when the capacitors has different combination, b ( n ) ' s value will also change, with the inputting local measurement data, the paper studies the series and parallel resonance at the substation, and deduces that the reason the capacitor ' s fuse of tang6c is frequently interrupted is that its capacitor current contains a large number of 5th harmonics, and that the reason the discharging pt of tang7c capacitor being exploded is also that the 7th and 9th harmonic currents are amplified
據此，對該站進行了串聯諧振分析和並聯諧振分析，並結合測試數據和有關變電站的運行記錄，指出了導致該站電容器湯6c頻繁燒保險的主要原因是5次諧波電流含量偏高，引起湯7c放電pt爆炸也是因為7次和9次諧波電流被放大。針對這些導致湯陰變電站補償電容器故障的原因，提出了相應的諧波治理措施，包括針對湯6c電容器5次諧波電流含量偏高的原因，提出了停運湯6c電容器或者通過把湯sc電容器的部分容量併入湯6c電容器（湯sc其餘部分停運）以增加湯6c諧波承受能力的措施;針對# 2變低壓側7次和9次諧波電流被放大的現象，提出了在湯7c電容器上加裝一定百分比的串聯電抗器的措施。Some conclusions are drawn : 1 ) effect of inertial force from superstructures on the lateral seismic response of single pile can not be ignored ; 2 ) the lateral seismic response of single pile induced by far - field earthquake are mainly affected by acceleration mass of superstructure > site eigenperiod. it increases with the increment of accele ration and mass of superstructure. as the site characteristic frequency approaches the self - oscillation frequency of the pile, sympathetic vibration occurs and the value of lateral seismic response reaches maximum ; 3 ) as the stiffness ratio of pile to soil increase, the relative displacement of pile to soil increases ; 4 ) the lateral seismic response of fixed - head pile is much smaller than that of free - head pile
將其解析解與具體的的抗震設防烈度和場地特徵周期結合起來，計算分析了成層地基中單樁的橫向地震響應，得到了以下結論： 1 ）上部結構慣性力對樁的橫向地震響應的影響不可忽略； 2 ）成層地基中的單樁的橫向地震響應主要受地震基本加速度、場地特徵周期、上部結構質量的影響，隨地震基本加速度、上部結構質量的增大而增大；場地特徵頻率越接近樁基自振頻率，樁基地震響應越大，等於自振頻率時，由於發生共振現象，樁基響應幅值最大； 3 ）樁土剛度比越大，樁土之間的相對位移的幅值越大； 4 ）樁頂固接的連接方式，可以有效地降低地震時單樁的橫向地震響應。The market become divided of next year should be met more intense, what with the bank edition piece is a delegate is blue prepare a meeting to initiate more violent on attack prices, a lot of blue prepare a stock to be able to be made break up time break up again even time market performance, nevertheless the index of grail won ' t give the appearance that the phenomenon rises 6 years considerably so, what because the share that exceeds half above will be entered, drop for a long time is boundless xiong tu, and when the height of small blame undersell that experience mixes the stock that is abandoned by the market as these behoove 7 years 8 years, those who be faced with is the destiny of the suffers cold shoulder for a long time cannot recover after a setback that can affirm almost
明年的市場分化應該會更激烈，以銀行版塊為代表的藍籌股會發起更猛烈的上攻行情，很多藍籌股票會作出翻番甚至再翻番的市場表現，不過大盤的指數不會出現象06年這樣大幅上漲的現象，因為有超過一半以上的股票將步入長期下跌的漫漫熊途，而隨著這些理應被市場拋棄的股票遭遇07年和08年的小非拋售高峰時，面臨的幾乎是可以肯定的長期遭到冷遇的一蹶不振的命運。Hysteresis is not only found for the temperatures, due to the difference between the onset and damping temperatures, but also for the input heating power, i. e., the critical onset power is also different with the critical power for the damping process
此外，還發現熱聲起振和消振過程中的臨界溫度和臨界功率都存在滯后現象。基於對滯后現象的分析，提出了一個混合驅動源熱聲驅動器的方案。Due to the vibration and swing of generating units of wujiangdu hydropower station are larger than specifications when its capacity is added, the authors analysis the reasons and provide the measure of weight correction
摘要針對烏江渡水電站增容改造后1號機組振動擺度偏大的現象，分析了引起機組振動擺度過大的原因，並提出了配重校正的措施。To study blue - green laser light scattering and polarization status changes in the ocean, is used to resolve the relative problem of optical communication, detection and imaging under water. in the paper, sea water characteristic of absorption and scatter - ing, and intrinsic optical character and extrinsic optical character of sea water are summed up ; the scattering theories of sea water, including rayleigh scattering, mie scattering by spherical particles and polarization theories of mie scattering, are described in detail
研究藍綠激光在海水中的散射特性以及由散射引起的退偏現象，是為了解決水下通信、探測、成像的相關問題。本文綜述了海水對光的吸收、散射特性以及海水的內在光學性質和外在光學性質;詳細介紹了海水的散射理論，包括瑞利散射、 mie散射以及mie散射的偏振理論。In light of the limitation of fast fourier transform ( fft ) for the method of traditional spectrum analysis to analyze the unsteady signal, wavelet and wavelet analysis are made for the typical unsteady process signal of starting up and shut down with the good characteristic of simultaneous localization in both the time and the frequency domains based on the field test on the vibration of two - row placed units in lijiaxia hydropower station, in which the signal is decomposed into different frequency band, and then the weak signal is caught and the dominant frequency is picked up for the analysis of the vibration source
摘要基於李家峽水電站雙排機組振動的現場試驗研究，並且針對傳統頻譜分析方法傅立葉變換（ fft ）對于非平穩信號已力不從心這一缺陷，利用小波分析方法在時域和頻域上同時具有良好的局部化性質，通過對開停機這一典型非平穩過程信號進行小波及小波包分析，將其分解到不同頻帶內，獲取微弱信息和提取優勢頻率，並對其作振源分析，得出開停機初始時刻因水流不穩均出現強烈的振動現象，且低頻段信號能量最大，開停機過程水流脈動壓力和尾水渦帶擺動是引起定子基礎振動的主要原因。The phenomenon of heavy turbine vibration which causes vibration of the workshop or even that of the dam in some hydroelectric power stations in china is presented
摘要介紹了我國水電站混流式機組廠房某些工作區域內振動過大的現象，並不同程度地引起水電站廠房甚至大壩的振動。Surge phenomenon is an instability flowing condition when centrifugal compressor working at low flux, it can make the compressor shut down, the production process interrupted, then bring us the loss of economy. further more, it can damage the compressor, make it broken and can even hurt people
喘振現象是離心壓縮機工作在小流量時的不穩定流動狀態，它的出現輕則使壓縮機停機，中斷生產過程造成經濟損失;重則造成壓縮機葉片損壞，引起壓縮機設備報廢甚至造成人員傷害。By combining the parameter smooth projection algorithm and the integral - type lyapunov design technology with the sliding mode design technology with boundary layer, the performances for the system to avoid the parameter drift phenomena, the chattering phenomena, and the controller singularity problem were improved
通過將參數光滑投影演算法，帶飽和層的滑模面設計技術以及積分型李雅普諾夫設計技術集成起來，使得演算法提高了系統在抑制參數漂移、抖振現象、控制器奇異等方面的能力。Furthermore, the fiber phase - conjugator has been used in ld - pumped solid - state laser system with four - pass configuration to suppress the self - oscillating ( so ) phenomena caused by amplified spontaneous emitting ( ase ) in laser amplifier. when using 200 m fiber, the energy of so has been successfully decreased from 12mj to below the precision of energy - detector
將光纖相位共軛鏡應用於四通放大結構中，有效抑制了放大級中的放大自發輻射引起的自激振蕩現象，使得自激振蕩輸出能量從12mj降低到能量計最小精度以下。The established contact model has provided good explanation for the phenomena of the reduction of frictional coefficient induced by longitudinal ultrasonic vibration and has great academic significance in proposing friction reduction technology based on elliptical ultrasonic vibration
對該模型的分析很好地解釋了縱向超聲振動所引起的摩擦系數降低的現象，為提出利用橢圓軌跡超聲振動來實現減摩奠定了理論基礎。The study of burning under the influence of small amplitude disturbances in ambient gas is a logical starting point for understanding the unsteady burning phenomena.
在周圍氣體小振幅擾動的影響下的燃燒研究，是了解非穩態燃燒現象合乎邏輯的起點。From above analysis, the thesis gets conclusions as following : ( 1 ) the frequencies of multi - tower building are so dense and the coupling in each mode is so evident that the cqc method instead of srss should be used to calculate the seismic action effect ; ( 2 ) torsion effects is distinct between the modes of asymmetry multi - tower structure and it is necessary to take translation - torsion coupling into account ; ( 3 ) the effect of the enlarged base rigid on the seismic properties is very big, the rigid ratio of the enlarged base to towers in asymmetry multi - tower structure should be designed in a proper range ; ( 4 ) the distribution of plane rigid is asymmetry because of the asymmetry layout of towers. the torsion effects of structure not only result in large torsion internal force in vertical element resisting lateral displacement, but also make large influences on the stress of transfer plate and near floors, thus it is necessary to strengthen those floors
通過上述分析，得出以下主要結論：多塔樓結構存在頻率密集現象，各振型間耦聯效應明顯，地震作用計算應採用cqc組合原則而不能簡單地採用srss組合原則；非對稱多塔結構的振型中，扭轉作用明顯，平扭耦聯效應值得考慮；裙樓剛度對整體結構的抗震性能影響很大，非對稱多塔結構宜控制裙樓與塔樓剛度比在適宜的范圍；非對稱多塔易導致平面剛度分佈不均勻，結構扭轉效應不僅在豎向抗側構件中引起較大的扭轉內力，對轉換層樓板應力有較大的影響，且延續至相鄰樓層，對相應樓層均應採取相應的加強措施。Secondly, this paper develops a coupled model between ice and structure after knowing the constitutive behavior of sea ice ; focus on the effects of wing cracks to the coupled vibration. and the stability of steady state vibration is also discussed qualitatively
把冰激直立結構穩態振動定性為由於海冰的非線性力學性質導致的非線性振動，證實了穩態自激現象的存在，提出了海冰的微裂紋損傷行為在穩態自激振動中起到控製作用。Thus, we have deeply studied the applications of stochastic theory in protein motor and fhn neuron model, and obtained some important results, especially the opposing role of the amplitude and correlation strength in protein transport, the locked phenomenon in fhn neuron model, the dependence of the effect on initial condition, the phase transition and resonance in globally coupled neuron system
為此，我們對隨機理論在生物馬達蛋白和fhn神經模型上的應用進行了較深入的研究，取得了一些有重要意義的成果，特別是發現：漲落勢的幅值和關聯強度對蛋白輸運起著相反的作用；噪聲誘導fhn神經電位的鎖定現象；噪聲關聯導致雙穩系統對初始狀態的記憶功能；噪聲作用下全局耦合fhn神經網路的共振和相變現象。Furthermore, aqm also need to avoid sending congestion notification to too many sources and consequently decreasing the utilization of bottleneck link. therefore the sending rate of congestion notification should relate to the traffic load but red does n ' t take this factor into consideration thereby resulting in queu e size oscillate which arose queuing delay and jitter
具體說來， red演算法中擁塞指示的發送速率主要是由參數max _ p來體現的，並且max _ p值是靜態設置的，所以當流量負荷發生改變時red演算法難以適應這種變化，從而會引起隊列振蕩，導致不必要的傳輸延遲和抖動現象。Since the concept of superlattice was proposed, vertical transport in superlattice has been investigated widely. the electric field domains and current self - oscillations which result from sequential resonant tunneling between different subbands of the superlattice are very significant phenomena. such kind of oscillation can be uesd to make tunable microwave oscillaors. in this thesis, low temperature transport problem, especially the formation of field domain and the condition of current self - oscillations in doped gaas / alas superlattice with weak coupling are investigated thoroughly and also by combining the macroscopic model with the microscopic one., the voltage - current characteristic and the current oscillation are simulated. the calculated result is nearly consistent with the experimental data
由超晶格中子能級之間的順序多阱共振隧穿引起的電場疇及電流自維持振蕩現象是其中的一個非常有意義的分支，該現象可用來製作電壓調諧微波振蕩器。本論文對弱耦合摻雜gaaa alas超晶格中的縱向輸運特別是針對低溫下的場疇的形成和固定偏壓下電流自維持振蕩產生的條件進行了深入的探討，並結合宏觀模型和微觀模型對超晶格在時變電壓作用下的電壓-電流特性以及固定偏壓作用下的電流特性進行了模擬計算。The nonlinear pid ca n ' t fit the change of the reaction. the feed forward control base on model also ca n ' t fit the change of ph value and flux of the original water. so the control method ca n ' t get a good result
Pid控制演算法也無法對反應的變化過程做快速的、精確的反應，在控制過程中很容易引起振蕩現象，很難對系統實現最優控制。分享友人