擺動不穩定性 的英文怎麼說

中文拼音 [bǎidòngbùwěndìngxìng]
擺動不穩定性 英文
oscillatory instability
  • 擺 : Ⅰ動詞1 （安放; 排列） put; arrange; set in order 2 （顯示; 炫耀） display; show off; put on; assu...
  • 不 : 名詞[書面語] （剁物所用的木墩） a block of wood
  • 穩 : 形容詞1 （穩定; 穩當） steady; stable; firm 2 （穩重） steady; staid; sedate 3 （穩妥） sure; rel...
  • 定 : Ⅰ形容詞1 （平靜; 穩定） calm; stable 2 （已經確定的; 不改變的） fixed; settled; established Ⅱ動詞...
  • 性 : Ⅰ名詞1 （性格） nature; character; disposition 2 （性能; 性質） property; quality 3 （性別） sex ...
  • 擺動 : 1 （搖擺） swing; sway; oscillate; pendulate; waggle; wobble; vibrate; wiggle 2 [機械工程] jiggin...
  • 穩定性 : antiwhip
  • 穩定 : 1 （使穩定） stabilize; steady 2 （穩固安定） stable; steady 3 （物質的性能不易改變的作用） stabi...
  1. Through the experiment, the following results were given out, whether the system was rolling or not, there were always density oscillation gradients when the two - phase flow instabilities occurred, and the stability of the system was always strengthened with the increasing of the inlet mass flow or the increasing of the inlet subcooling of the test tube

    實驗結果表明，無論是搖擺還是不搖擺，系統發生的不穩定類型中都有密度波型脈動成分，系統的穩定性總是隨流量的增加而增強，隨入口過冷度的增加而增強。
  2. To study the influence of this damper configuration to aeromechanical stability, some work has been done in this thesis. first, dynamic equation of the rotor - hub system was modeled with the generalized hamilton principle, which can be used to analyze the stability problem in different conditions like on - ground, hovering and flight. when fastening the fuselage, the model can also be used to analyze the stability problem of isolated rotor system

    為了研究這種新型布置減擺器對直升機穩定性的影響，本文所作研究工作如下:首先，本文利用廣義的hamilton原理建立了適用於不同狀態（地面、懸停和前飛）的旋翼/機體耦合系統的動力學模型，該模型中將機體固定可以用來分析孤立旋翼的穩定性問題。
  3. 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。
  4. In allusion to the coning motion of parachute systems in steady decent, the impact of several factors upon the motion forms of the system are discussed, and the influence of the different aerodynamic parameters on the system ’ s coning motion are analyzed significantly. on the base of these, theoretical formulae of the system ’ s steady coning motion are deduced to validate the model ’ s correctness

    針對降落傘系統在穩定下降過程中的錐擺現象，討論各種因素對系統運動形式的影響，著重分析了不同的氣動參數對系統錐擺運動的影響，在此基礎上推導出系統穩定錐擺運動的理論公式，驗證模型的正確性。
  5. In this dissertation, the experimental study of rolling condition on two - phase flow instabilities of the forced - single - tube circulation system was carried out. furthermore, based on the d - partition method and the hypothesis of drift flow model, given some conservative equation, using the perturbation method the response of the pressure drop of the tube to the inlet flow rate perturbation was analyzed both in rolling condition and in normal upright position

    本文主要通過實驗對搖擺條件對單管強迫循環中汽液兩相流動不穩定性的影響，同時在d分區法的前提下，在兩相區基於漂移流模型，一定的守恆條件下，在搖擺和不搖擺工況中用線性小擾動法對實驗段的壓降對入口流速的擾動的響應進行了分析。
  6. The thesis has done the widespread investigation and study to the domestic and foreign ’ s technologies of analogy low voltage and low power, and analyzes the principles of work, merts and shortcomings of these technologies, based on the absorption of these technologies, it designs a 1. 5v low power rail - to - rail cmos operational amplifier. when designing input stage, in order to enable the input common mode voltage range to achieve rail - to - rail, it does not use the traditional differential input pair, but use the nmos tube and the pmos tube parallel supplementary differential input pair to the structure, and uses the proportional current mirror technology to realize the constant transconductance of input stage. in the middle gain stage design, the current mirror load does not use the traditional standard cascode structure, but uses the low voltage, wide - swing casecode structure which is suitable to work in low voltage. when designing output stage, in order to enhance the efficiency, it uses the push - pull common source stage amplifier as the output stage, the output voltage swing basically reached rail - to - rail. the thesis changes the design of the traditional normal source based on the operational amplifier, uses the differential amplifier with current mirror load to design a normal current source. the normal current source provides the stable bias current and the bias voltage to the operational amplifier, so the stability of operational amplifier is guaranteed. the thesis uses the miller compensate technology with a adjusting zero resistance to compensate the operational amplifier

    本論文對國內外的模擬低電壓低功耗技術做了廣泛的調查研究，分析了這些技術的工作原理和優缺點，在吸收這些技術成果基礎上設計了一個1 . 5v低功耗軌至軌cmos運算放大器。在設計輸入級時，為了使輸入共模電壓范圍達到軌至軌，不是採用傳統的差動輸入結構，而是採用了nmos管和pmos管並聯的互補差動輸入對結構，並採用成比例的電流鏡技術實現了輸入級跨導的恆定;在中間增益級設計中，電流鏡負載並不是採用傳統的標準共源共柵結構，而是採用了適合在低壓工作的低壓寬擺幅共源共柵結構;在輸出級設計時，為了提高效率，採用了推挽共源級放大器作為輸出級，輸出電壓擺幅基本上達到了軌至軌;本論文改變傳統基準源基於運放的設計，採用了帶電流鏡負載的差分放大器設計了一個基準電流源，給運放提供穩定的偏置電流和偏置電壓，保證了運放的穩定性;並採用了帶調零電阻的密勒補償技術對運放進行頻率補償。
  7. In this thesis the problems relative with safe reliability of parachute recovery system of manned spacecraft are commenced, the coning motion of the systems in steady decent are studied emphatically ; in view of multibody dynamics, two different dynamic modeling principles and methods of parachute systems have been discussed, and their dynamic characteristics are analytically compared

    本文從載人飛船回收系統安全可靠性緊密相關的問題著手，重點研究了降落傘系統在穩定下降過程中的錐擺現象;並且從多體系統動力學的角度出發，討論了物傘系統的兩種不同動力學建模理論和方法，並對它們的動力學特性進行了分析比較。
  8. The control of the two - stage inverted pendulum is a traditional question in the control field. the two - stage inverted pendulum system is a multivariable, highly nonlinear and absolutely unstable dynamic system

    倒立擺問題是非線性動態系統控制中一個經典問題，倒立擺系統是一種非線性、多變量和絕對不穩定的系統。
  9. At last the dynamics of trailer is analysed when trouble is take place including the lateral stability when the anti yaw dampers become ineffective, the ride index when airsprings have no air and the negotiation when the trailer runs on the curve the tilting actuator does n ' t work or work in the contrary direction

    最後，論文分析了拖車在幾種故障工況下的動力學性能，包括抗蛇行減振器失效工況的橫向穩定性；空氣彈簧無氣工況的運行平穩性；曲線通過時傾擺作動器不動作和傾擺作動器反向動作工況拖車的動態曲線通過性能。
  10. The heat flux level at which the two - phase flow instabilities onset was always decreased under rolling condition. the decreasing aptitude is about 2 % - 48 % of the normal level

    搖擺工況下的脈動起始點功率值與不搖擺工況的脈動起始點功率值相比降低了2 48 ，搖擺使系統的穩定性下降。
  11. An analytical model is developed for the dynamic stability analysis of helicopter rotor / fuselage coupled systems with general connections or inter - blade connections for the nonlinear elastomeric lag dampers

    摘要建立了粘彈減擺器不同連接形式時的旋翼機體耦合動穩定性分析模型。
  12. To improve the stability, one common method is to install dampers at the roots of blades. however, commonly used dampers can hardly meet different demands when helicopter working in different conditions

    為提高旋翼/機體耦合動穩定性，一般採用在槳葉根部安裝減擺器的方法，但目前常用的減擺器很難滿足直升機不同工作狀態下對擺振器阻尼的不同需求。
  13. Therefore, in this thesis, the magneto - rheological damper ( mrfd ) was studied which is of simple structure, high reliability and self adaption

    為此，本文研究了結構簡單、可靠性高並具有自適應能力的磁流變減擺器（阻尼器） ，用於控制直升機旋翼/機體耦合動不穩定性運動。
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