floquet 中文意思是什麼
floquet
解釋
弗洛凱-
Monin - obukhov length ; surface layer ; analytical solution ; one - dimension mapping ; floquet multiplier
Monin - obukhov長度近地面層解析解一維映射floquet乘子 -
Finally, floquet ' s theory is used to generate - dynamic stability system equations for the purpose of determining both undamped and damped instability regions
最後採用floquet理論求得考慮阻尼及不考慮阻尼時確定動力失穩區間的控制方程。 -
And invoking floquet theorem, the problem domain can be reduced to that of a single cell. in the two outer regions, the solutions have been accessed by the mm method
為解決高功率微波系統中目標跟蹤和高功率微波發射共用一部天線的問題，引入極化雙工柵。 -
In this article, method of moment ( mom ) and floquet mode ( fm ) method will be applied to analysis the radiation and scattering of planar array and curved array
本文分別採用比較經典的低頻方法?矩量法和一種專用於陣列分析的高頻方法? floquet模（ fm ， floquetmode ）方法對有限陣列電磁散射特性進行分析。 -
After reduction, the effective numerical method is adopted to explore the response and stability information of the system, and the state of motion and type of the bifurcation are analyzed by floquet theory
降維之後，採用有效的數值計算方法分析系統的動響應和穩定性，利用floquet理論分析其運動狀態和分岔類型。 -
The finite element method incorporated with floquet theorem is used to solve the 2 - dimentsional scattering problem of dielectric electromagnetic bandgap upon which a plane wave is oblique or perpendicular incident
採用有限元和floquet定理相結合的方法，對不同參量的二維介質電磁帶隙ebg結構的反射和傳輸特性進行了研究。 -
According to floquet theorem, the relations between the dyna mical localization and quasi - energy bands are pointed out with both numerical and analytical calculations on quasi - energy bands and their corresponding time evolution
應用floquet定理，從解析與數值計算兩個角度計算了該模型的準能譜與時間演化，指出動力學局域化與準能譜的塌縮的對應關系。 -
Floquet ports : these periodic ports enable designers of phased - array antennas and frequency - selective surfaces to obtain separate fields into modes for better understanding and examine phase information for each mode
傅里葉埠:這種周期性的埠可以使相控陣天線和頻率選擇表面的設計者能夠得到不同傳輸模式下的場型，從而能夠更好地理解和驗證每種模式下的相位信息 -
The dynamics behaviors of the flexible jeffcott rotor system supported by unsteady short dynamic bearing are investigated. based on nonlinear unsteady - state dynamic n - oil film force model described by three functions the local stability of the periodic solutions with the controlling parameters, rotational speed ratio, imbalance amount, damping ratio and viscidity, are predicted by using the floquet multiplier. it is found that the period doubling bifurcation is caused by a certain imbalance amount and the hopf bifurcation is created by the lost stability of the oil - film
研究了非穩態動載短軸承支撐的jeffcott柔性轉子系統的動力特性，基於可用三個函數表示動態油膜的非穩態非線性油膜力模型，將轉速比、不平衡量、阻尼比、粘度作為控制參數，利用floquet乘子預測周期解的局部穩定性，發現倍周期分叉是由一定量的不平衡引起的，而hopf分叉是由油膜失穩造成的。 -
The way to eliminate chaos phenomenon through adjusting system parameters is indicated. the nonlinear dynamic behavior of journal bearing - rotor system in large parameter space is studied in numerical integral method and floquet theory and the first and second bifurcation behavior of nonlinear rotor system are discussed ; the concept is advanced that realizing the controllable nonlinear stiffness with sfd with the soft - nonlinear of sma in the super - elasticity state to make the vibration amplitude of system always be in the small solution state to reduce the vibration amplitude of rotor system
運用數值積分方法結合floquet理論對滑動軸承-轉子系統的大參數范圍非線性動力學特性進行了全面的研究，詳細地討論了系統的一次和二次分岔行為； 5 ）提出了用形狀記憶合金在超彈性狀態下的軟非線性，結合擠壓油膜阻尼器實現系統剛性的非線性可控，降低系統在非定常狀態下的最大振幅的構想。 -
This is the limitation of the floquet theory. combining both methods some suggestions on the design parameters of oil - film bearing - flexible rotor system can be offered. comparing the dynamic oil - film force model to the steady one, the rationality of the dynamic oil - film force model is noted
結合這兩種方法為油膜軸承柔性轉子系統相關參數的適當設計提供了定性分析的依據，將動態油膜力模型和穩態油膜力模型的數值結果進行比較，表明動態非線性油膜力模型的合理性。 -
By means of the precise integration method with lagrangian interpolation the trajectory of the shaft center, the poincare mapping and the bifurcation graphs are numerically given. the results predicted by the floquet theory are checked and the long - term dynamic behavior of the system is predicted. it is shown that the system has rich nonlinear behaviors at some m combination of the four parameters, for examples, multi - frequency subharmonic resonance, as well as chaos phenomenon from doubling bifurcation and twice hopf bifurcation
通過lagrange插值精細積分法數值給出系統的軸心軌跡圖、 poincar映射圖、分叉圖，檢驗floquet理論預測結果並預測系統的長期性態，顯示系統在四個參數組合的某些范圍內具有豐富的非線性特性，還存在多形式次諧波解，以及由倍周期分叉、二次hopf分叉通往混沌的現象。 -
In chapter 3, the non - linear equation was linearized with the jacobi matrix, and then the linearized equation was transformed into fixed frame to analyze the stability problem with eigenvalue method ( on - ground or hovering ) or floquet theory ( forward flight ). meanwhile, the equation was perturbed by sweep frequency excitation from steady state to get transit decay of lag response which was then transformed into fixed frame with a numerical fourier coordination transformation ( fct ). the fixed frame response along with the body response was analyzed via an fft to determine modal frequencies
然後，在穩態響應的基礎上利用雅各比矩陣對非線性方程進行了線化，線化后的方程利用多槳葉坐標變換轉換到固定系下后，利用直接特徵值分析（地面、懸停）或floquet理論（前飛）對系統進行了穩定性分析;同時，對系統進行了瞬態響應分析;在系統達到穩態的基礎上進行掃頻激勵，用fft變換求得系統頻率，進而用移動矩形窗方法分析得到系統的阻尼。 -
The threshold speed and the typical characteristics of the oil whip of the system are simulated under the nonlinear model of oil film force, and the state of motion and type of the bifurcation are analyzed by floquet multiplicators which is computed by the shooting method. secondly, the the nonlinear dynamical model of the low - pressure rotor - bearing system by column bearing with reduced dimensions is presented. the numerical results show the rule of the amplitude with the eccentricity of rotor, the length - to - diameter ratio, oil viscosity and the clearance - to - radius ratio of the bearing under the definite speed
其次，對降維后的低壓轉子?軸承系統的非線性動力學方程，計算了圓柱瓦軸承支撐的轉子系統的振動穩定性在固定轉速下隨偏心距、軸承長徑比、潤滑油動力粘度和軸承間隙比的變化規律，並分析了轉子前軸承軸頸的失穩轉速與轉子偏心距、軸承長徑比、潤滑油動力粘度和軸承間隙比之間的關系，同時利用floquet理論分析其運動狀態和分岔類型。 -
The second part of the work is to analyze the finite array with floquet mode method. the scattering field of two - dimension array is computed and the characteristic of fm is mentioned. at the end of the work, the two methods, fm and mom, are discussed respectively
第二部分工作研究有限陣列電磁散射特性分析的fm方法，總結了fm方法分析陣列散射場的一般步驟，採用fm方法計算了二維有限陣列的散射場，與矩量法做比較，分析了fm方法的優缺點以及數值計算中的一些注意事項。
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