瞬時振動 的英文怎麼說

中文拼音 [shùnshízhèndòng]
瞬時振動 英文
instantaneous vibration
  • 瞬 : Ⅰ名詞（眼珠一動; 一眨眼） wink; twinkling Ⅱ動詞（眨眼） wink
  • 時 : shí］Ⅰ名1 （比較長的一段時間）time; times; days:當時at that time; in those days; 古時 ancient tim...
  • 振 : 動詞1. （搖動; 揮動） shake; flap; wield 2. （奮起） brace up; rise with force and spirit
  • 振動 : vibrate; vibration; vibrance; vibrancy; vibra; vibes; shaking; rumble; jitter; chatter; sway; jar...
  1. Based on a duralumin flexible beam with piezoelectric films attached, distributed parameter modal described by partial difference equations is builded, and then turned into a set of two order systems with the method of modal analyse. state feedback control and independent modal control is investigated. and simulation of the closed - loop system with thest two methods is performed in matlab

    並用模態分析的方法，將系統的偏微分方程模型轉化成了模態模型；研究了狀態反饋和獨立模態方法；進一步完善了軟體界面以及軟體功能；在實際系統中，應用狀態反饋演算法，有效抑制了懸臂梁在受到外界瞬時脈沖擾動和激振引起的一階、二階模態振動。
  2. Intermodulation suppression for fh ( frequency hopping ) receiver is designed by selecting the intermediate frequencies and changing group of filters, local oscillation ( lo ) frequency, bandwidth of lo frequency under the condition that receiver configuration, sensitivity, dynamic range, instantaneous bandwidth and precision of frequency measurement are fixed

    摘要針對跳頻接收機的體制和靈敏度、動態范圍、瞬時工作帶寬、測頻精度等設計參數，通過改變預選器組成、本振頻率和本振帶寬，分析接收通道的中頻選取原則，以實現跳頻接收機的互調抑制設計。
  3. By virtue of their high self - resonance, good transient response and very small measuring distance, the tension compression force transducers are equally suitable for both static and dynamic applications

    依靠它們很高的自振性良好的瞬時響應和很小的測量距離，無論靜態或是動態場合，拉壓力傳感器都同樣適用。
  4. It is superior to passive vibration isolation system, and also to the general active - passive hybrid vibration isolation system. the functions of the weighting matrices q and r are analysed and the conclusion is obtained that instantaneous optimal control algorithm is superior to linear quadratic gauss when choosing the same weighting matrices

    （ 4 ）用計算機模擬驗證了智能結構主動隔振的有效性和優越性；分析了加權矩陣對控制系統的影響並探討其選取方法；證明了在加權矩陣選取相同時，瞬時最優控制優于lqg控制。
  5. Then, taking into account the effect of the compression of the approach roadway and the differential slope of the bridge slab, the author analyzes the dynamic response of man - vehicle - road system when the vehicle approaches and leaves the bridge by means of laplace transform, the curve of man ' s acceleration versus time, the vertical force between the vehicle and road versus time, the man ' s maximum transient vibration value and the maximum force between the vehicle and road are got, and the program about the calculating progress above are edited. based on the analysis above, the influence on the maximum transient vibration value of some parameters about the vehicle and road such as the movement direction and speed and weight of the vehicle, the differential slope of the bridge slab and the length of the approach slab, are studied, and some conclusion are given

    分上橋和下橋兩種情況，考慮車路耦合和橋面沉降坡差的影響，對車輛通過設和不設搭板的路橋過渡段時「人?車?路」系統的相互作用用拉普拉斯變換法進行了動力響應分析，得到了人的加速度及路面對車的垂直作用力隨時間的變化曲線、人的加速度最大瞬態振動值和路面對車的最大作用力，分析了車輛的行進方向、速度和載重，橋面沉降坡差和搭板長度等車和路各參數對計算結果的影響，並編制了相應的計算程序。
  6. The biggest displacement of the instantaneous response is much bigger than that of the static one

    初始靜力荷載效應使瞬時動力響應的振幅比無初始靜力荷載效應的結構的水平和豎向位移振幅小。
  7. In order to reflect the characteristics of amplitude increase and frequency changing of seismic signal, a new automatic recognition method of seismic phase is developed based on the instantaneous amplitude and instantaneous frequency

    摘要為了充分反映地震信號振幅增大和頻率改變的特徵，發展了一種以振幅和瞬時頻率比乘積為特徵參量的震相自動識別方法。
  8. A detailed model of non - linear parametric excitation vibration coupling the stay cable and the girder, in which the static sag as well as the geometric non - linearity are considered, is proposed in this paper. based on several numeric examples investigated by the galerkin method composed with the integration strategy, several kinds of factors effecting stay cable parameter vibration are studied. another parameter vibration model by the axial excitation is presented and the corresponding nonlinear equations are derived

    本文創新地提出了斜拉橋拉索-橋面耦合參數振動模型，推導了索-橋耦合非線性參數振動方程組，聯合galerkin法及數值積分方法，對各種特性的拉索進行了數值求解，得出了影響拉索參數振動的各種因素；提出了斜拉索受軸向端激勵參數振動模型，導出了模型的非線性振動方程，使用諧波平衡法得出了產生參數振動需要的最小激勵幅值、共振時瞬態及穩態的振動幅值及索拉力的變化特性，並用數值積分方法對實際斜拉橋拉索進行了計算，分析了拉索阻尼對參數振動的影響。
  9. The differential equation of flexible rotor operating unsteadily is also derived and solved, its transient dynamics responses under different accelerations are obtained with simulink ' s program. the amplitude, phases and advancing angular velocity of response along with rotational speed and time under different accelerations are discussed. the responding conclusions have been reached

    同時，建立了單盤轉子的瞬態運動方程，用simulink程序求解了所建立的瞬態方程，模擬得到了它在不同加速度下的瞬態動力響應，並就不同加速度下的振幅、相位、進動角速度隨時間和隨轉速的響應分別作了較詳細的討論，得出了相應的結論。
  10. Engine is contained in the angular vibrating curves of crankshaft, many scholars do research on the fault cylinder diagnosis by use of the transient speed curves of i. c. engine, and some progresses are acquired, but there are some problems such as the poor diagnosis accuracy in some cases and the limited application range

    內燃機曲軸角振動曲線含有豐富的內燃機作功狀況的信息，國內外許多學者都在研究利用內燃機瞬時轉速曲線診斷故障缸，取得一定進展，但存在精度不高或適用范圍受限制等問題。
  11. It is discovered that the fluctuating increment of the instantaneous angular acceleration curve of crankshaft ( ay method ) put forward in this paper can be used to diagnose the power and compression condition of multi - cylinder engine in the state of shorter, more rigid crankshaft and lighter torsional vibration and in the rapidly diagnosed situation, and the ay method is better than the fluctuating increment of the instantaneous rotation speed curve of crankshaft ( n method ) which is used widely now

    結果發現，在內燃機曲軸較短、剛性較大、扭振較小、對診斷速度要求很快的場合，用本文提出的曲軸瞬時角加速度波動增量j法能較準確地判斷多缸內燃機各缸的作功狀況和壓縮狀況，優于目前廣泛使用的曲軸瞬時轉速波動增量n法。
  12. In quantitatively analysis including process of loading and stress distribution along the body of a chimney, load of blasting vibration induced by the forming of blasting cut was analyzed and the premature rupture of upper chimney was certainly affected by it

    將ansys5 . 7瞬態動力學分析引入爆破動力計算中，定量分析研究了在切口形成時的爆破振動荷載下，整體結構受力過程及應力分佈規律。
  13. In accordance with the mr damper - spring system presented in this paper and non - linear fem model of guyed mast, an " off - on energy dissipation " semi - control strategy based upon mr damper ' s displacement is proposed, in which the control force of mr damper is close to the instantaneous optimal active control force and dissipate energy as possible as it can

    根據本文提出的mr阻尼器?彈簧系統和桅桿結構非線性計算模型，文中提出了使mr阻尼器所提供的控制力盡量接近瞬時最優主動控制力，同時又能盡量耗能的mr阻尼器對桅桿結構風振響應半主動控制基於阻尼器位移的「開關?耗能」半主動控制策略，並在時域內進行了模擬分析。
  14. A mathematical model of the vibration at the upper segment of a pile when there exist severe defects is put forward based on theoretical analysis, and the curve characteristics of its low strain test is described according to engineering practice under condition of transient shock

    摘要從理論上給出了當基樁存在淺部嚴重缺陷時，在受到瞬態激振力的情形下，樁體上段振動的數學模型，並結合工程實踐，描述了其低應變實測曲線的特徵。
  15. Abstract : a mathematical model of the vibration at the upper segment of a pile when there exist severe defects is put forward based on theoretical analysis, and the curve characteristics of its low strain test is described according to engineering practice under condition of transient shock

    文摘:從理論上給出了當基樁存在淺部嚴重缺陷時，在受到瞬態激振力的情形下，樁體上段振動的數學模型，並結合工程實踐，描述了其低應變實測曲線的特徵。
  16. According to the short lasting time of the vibration above, the maximum transient vibration value of the acceleration is selected as the comfort index, which is also the criterion to decide if the differential settlement is tolerable

    由於該振動是持續時間很短的瞬態振動，振動舒適性指標採用人的加速度最大瞬態振動值mtvv ，它也為橋頭跳車嚴重與否的衡量標準。
  17. On the other hand, heavy tamping is also a transient impact load that will produce strong ground vibration

    同時，從加載角度考慮，強夯又是一種瞬時沖擊荷載，作用在地面時產生振動問題。
  18. The signal of instant vibration testing for soil compactness is analyzed both in time domain and frequency domain. some feature parameters reflecting the characteristics of the signal are extracted

    從時間域和頻率域兩個角度對土密實度瞬態振動測試信號進行了分析，提取了信號的特徵參量。
  19. Second, according to the characteristic of the instantaneous change of action potential accompanied by the nerve impulse, we use h - h equation to describe such change, and conduct simulation combined with sr theory

    然後根據產生神經沖動時動作電位全或無式瞬時快速變化的特點，採用h - h方程作為描述這種變化的神經元模型，結合隨機共振理論進行了模擬研究。
  20. Using the optimization control method of the moderm control theories, the time - varying control and output - feedback control the authors study the variable structure active control over the rotor vibration with sma, especially the method of restraining the transient response of the rotor vibration. they get the rule of the optimum control force and the optimum control electric current and discuss the influence of variable stiffness on the total system stiffness through analyzing the structure of sma controller. they also indicate the shortcoming of the orthodox design method of a controller, especially the imbalance phenomenon caused by the lack of the rod stability, and propose a new method for improvement and items which ought to be paid attention to in the design stage

    運用現代控制理論中的最優控制方法，引入時變控制和輸出反饋控制，研究利用形狀記憶合金對轉子振動進行變結構主動控制，特別是抑制轉子振動的瞬態響應的方法，得出了最優控制力和控制電流的強度變化規律；通過分析形狀記憶合金動作器的結構，探討了變剛度支承對系統總體剛度的影響，指出了傳統設計方法的不足之處，特別是由壓桿穩定性不足引起的失穩現象，並提出了改進的方法和在設計中值得注意的問題
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