parameter boundary 中文意思是什麼
parameter boundary
解釋
參數邊界值-
Second, the starting and stopping behaviors under disturbed condition are analyzed and calculated by using the dynamic concentrative parameter model, which gives some advice to better prescribe refrigeration system and set theoretic foundation for carrying out automatic control of refrigeration system. third, the normal running process is analyzed and calculated by means of rational matching theory, which gives some advice on how to better understand the parameter change under steady state and the affection of inlet - parameter on evaporator. fourth, the simulation software with dynamic characteristic is designed, which can be applied to calculate thernio - parameter of cryogen, air humidity and frost thickness under different initial and boundary conditions, and to carry out dynamic simulation under conditions of dryness, wetness and frostiness, at the same time, to achieve detection and simulation at any stage from starting to stopping
本文的主要內容如下： 1 ）對翅片管蒸發器結構特點進行分析，選取適當的微元控制體，就干、濕和霜工況下對每個微元分別進行傳熱傳質分析，基於經驗關系式確定霜的有關參數，對于霜工況下的霜生長建立模型，經適當假設，運用質量守恆、能量守恆和動量守恆方程建立適合動態模擬的蒸發器數學模型，為系統模擬奠定基礎； 2 ）對蒸發在大擾動下的開、停機過程，運用動態集中參數模型進行分析和計算，為更好地描述製冷系統運行的全過程奠定基礎，同時也為製冷系統實現自動控制提供一定的理論基礎； 3 ）對蒸發器正常運行過程，運用動態分佈參數和參數間定量耦合的觀點來分析和計算，為更好地了解穩態工況下各點參數的變化情況及各入口參數對蒸發器動態特性的影響即蒸發器性能對各參數變化的敏感性； 4 ）編寫翅片管蒸發器動態特性模擬計算程序，可以計算不同邊界條件和初始條件下的製冷劑熱力參數、空氣溫濕度和霜厚度分佈場，實現對翅片管蒸發器在干、濕和霜工況下的動態模擬。 -
Thirdly, we obtain multiplicity of solutions for resonant non - homogeneous boundary perturbations from symmetric problem without parameter by a new perturbation method introduced by bolle in reference [ 4 ], applied in references [ 5 ] [ 6 ] and extend in reference [ 7 ]. references [ 5 ] [ 6 ] have considered some exceptive case while the section consider general case
再次，利用bolle在文獻[ 4 ]中提出的、被應用於文獻[ 5 ] [ 6 ]以及在文獻[ 7 ]中被推廣的一種新的擾動方法得到問題即不帶參數的對稱共振非齊次邊值擾動問題的多重解，在文獻[ 5 ] [ 6 ]中討論了非線性項為摘要幾種特殊情形的情況，此部分討論非線性項為一般情形的情況 -
To calculate this boundary parameter, mohorovicic discontinuity palaeo - heat flow value during basin evolution process is identified through geotectonic background analogy method based on " peeling " method model, and the basin basement palaeo - heat flow is calculated through inversion from today to antiquity with current tectonic structure as constraint condition for palaeo - crustal architecture analogy
為了求取這個邊界參數，以「剝層」法模型為基礎，通過大地構造背景類比法確定盆地演化過程中莫霍面古熱流值，以現今地殼結構為約束條件類比古地殼結構，從今至古反演求取了盆地基底的古熱流。 -
On the premise of a given set of material parameter, structural boundary shape and condition, design variables - thickness of plate and shell, is designed to minimize the structural weight subjected to the constraint conditions. 1. for the problem with size and stress constraints, full stress design method is used to solve the sectional optimization of plate and shell structures
在給定了板殼的材料常數、板殼結構的邊界形狀和邊界條件的前提下，確定表徵板殼厚度的設計變量，在滿足約束條件下實現結構重量最小： 1 .對于尺寸和應力約束的問題，使用滿應力方法求解。 -
It also roundly researched the solution of the helmholtz equation in the circumrotating ellipsoidal coordinates, and discussed how to calculate the solution of the electro - magnetic field in the circumrotating ellipsoidal coordinates using special functions, and researched circumrotating ellipsoidal cavity ’ s latent value and quality parameter using arithmetic simulation, finally we compared the ellipsoidal cavity with the spheriform cavity. the main content of this thesis are as following : 1. calculated the distribution of the electro - magnetic field inside the ellipsoidal cavity based on maxwell equations and boundary conditions, and confirmed the syntonic mode inside the ellipsoidal cavity using arithmetic methods
本文從maxwell方程及其邊界條件求解出橢球腔內的電磁場分佈，較為全面的研究了旋轉橢球坐標系下赫姆霍茲方程的解的問題，討論了用特殊函數來求解旋轉橢球坐標系下電磁場的解，並通過數值模擬研究了旋轉橢球諧振腔的本徵值和品質因數，並和球形諧振腔做了比較，主要內容為: 1 .用maxwell方程及其邊界條件求解出橢球腔內的電磁場分佈，並且分析了橢球腔內的諧振模式。 -
The geometric nonlinear analysis of three types of large - span annular cable truss structures is put forward by using commercial fem program. their static properties in deferent load case are concluded, and some suggestions for actual projects are also presented. base on the prime realization of its static property, parameter analysis of its static property is done consisting of deferent number of truss, deferent height of truss, deferent scale of height of masts, deferent boundary condition and deferent magnitude of pre - stress in deferent load case
本文利用通用有限元軟體ansys對大跨度環形空腹索桁結構體系中三種典型的結構（即內外圈都為圓形、外圈圓形內圈橢圓形、內外圈都為橢圓形的三種外形的結構）進行了幾何非線性分析，總結出各自在不同荷載工況下的靜力性能，並提出一些有實際工程意義的建議。 -
In chapter four, according to the analysis on the boundary theory and velocity field of main fluid zone of two - phase fluid pumps, the parameter equations of vane ' s modular curve of centrifugal pump are given, which contact the boundary " layer and eular theory of two - phase fluid pump by the fixing angel of vane as variable and leading into the velocity coefficient a. the results show that, in designing process of vane ' s modular curve of centrifugal pump, the determination of the total shape and parameters relates the flow properties of two - phase fluid and output ability of pump, or the design of the modular curve of centrifugal pump is the kernel of hydraulic design
第四章依據固液兩相流泵的邊界層理論及對主流區速度場的分析，給出了離心泵葉片型線的參數方程；它是以葉片安裝角為參變數，以引入的速度系數k _ v作為中間因子，將兩相流泵的邊界層理論和歐拉理論聯系起來? ?它說明了這樣一個事實，在離心泵葉片型線的設計過程中，它的整個形態或參數的確定都關繫到兩相流體的流動特性和泵的輸出能力，或者說，離心泵型線的設計是其水力設計的核心。 -
Several numerical experiments are carried out to detect the actual steps and limitation for the velocity and depth parameter ' s ray inversion in the fourth chapter, and the we find that : a. the resolution capability of the layer ' s velocity change along both the top and bottom boundary is very poor. thus generally the vertical homogeneous layer model whose top velocity equal to that of its bottom boundary should be considered
本文的第四章通過一系列模型試驗詳細探討了利用射線反演方法反演速度和深度參數的實際步驟，認為走時反演對速度層內頂部和底部速度變化的分辨能力很弱，僅僅依靠走時數據難以反演出層內頂部和底部的速度變化，故一般情況下應採用速度層底部和頂部速度相同的縱向均勻模型。 -
With highest respective boundary pbl parameter scheme, we devise five test projects : control experiment and sensitive experiments without sensible heat flux, without latent heat flux, without sensible and latent heat flux, without terrain
在高解析度邊界pbl參數化方案下設計5組試驗方案，對幾個個例風場進行模擬檢驗：控制試驗、無感熱試驗、無潛熱試驗、無感熱無潛熱試驗、無地形試驗。 -
Theory research based on overrelaxation : according to electromagnetic theory fundamental equation, boundary condition is analyzed, iterative formula is deduced, overrelaxation factor is selected and calculation program is composed. through calculation on varied parameter, a group of suitable parameter is found out. in the third chapter : the conclusion of theory research is verified through experiment
理論研究使用超鬆弛迭代法：根據麥克斯韋電磁理論基本方程，建立了磁場浙江大學博士學位論文：行程傳感液壓缸基礎技術的研究分析數學模型，分析了邊界條件，推導了迭代公式，確定了鬆弛因子，編制了運算程序，通過對不同參數的試算，找到了一組有規律參數之間的關系。 -
With the method, all integrals can be easily fulfilled on regular sub - domain boundaries, and to impose the essential boundary conditions, a penalty parameter can be used so that a positive definite and symmetric stiffness matrix may be obtained
計算中，積分都在規則形狀邊界子域上完成，因而容易實現；通過罰因子添加本質邊界條件，從而使得到的剛度矩陣是正定對稱矩陣。 -
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。 -
Considering the fuzziness of some boundary conditions enviroment media, and especially some loads in the engineering structure analysis, we go further into the computation based on the dynamic problem of fuzzy finite element ( ffe ), study further and systematically the analysis and solution. the principle of fuzzy minimum potential energy is established, and the balance equation of fuzzy finite element is reasoned by making fuzzy variation. at the same time, the dynamic balance equation of stochastic by making stochastic variation ， also the fuzzy stochastic dynamic balance equation is deduced. based the theory that the degree of the fuzziness and probability can be measured, in the other word, by using the concept of fuzzy entropy and entropy, pure fuzzy dynamic structure is given through transforming the probability to fuzziness. for the fuzzy parameter can be regarded as a fuzzy vector with dimensions, the structure ' s eigenvalue, by the theory of small parameter
建立了模糊瞬時最小勢能原理，運用模糊變分原理導出了模糊有限元動力平衡方程；同時，利用隨機變分原理導出了動力問題的隨機有限元方程，同時得到了模糊隨機動力問題的有限元平衡方程。根據模糊度和概率度可以度量的原理，即利用模糊熵和概率熵的概念，把結構的隨機性等效地轉化為結構的模糊性，得到純粹模糊性的動力結構。把結構所具有的模糊參數看作一個維的模糊向量，利用小參數攝動原理，把結構的特徵值，特徵向量和位移都在模糊向量的均值處進行泰勒展開，得到一組遞歸方程，即可以求得結構的模糊特徵值，特徵向量和模糊位移。 -
The optimal performance state ' s parameter of thermoelectric refrigerator under different work conditions was obtained on the assumption that the temperature in the cold side is invariable. and, the optimal performance state ' s parameter of thermoelectric refrigerator under the third kind boundary conditions was also obtained. the transmission of heat differential equation for the heat conduction process of thermoelectric module was derived and the solution with the first kind boundary conditions under the influence of thomson effect and the solution with the third kind boundary conditions without the influence of thomson effect was obtained
在假設熱電製冷的熱端溫度固定的條件下，得出熱電製冷器在不同工況下的最佳工作參數並進一步求得在三類邊界條件下的最佳工作參數;導出了電偶臂在電與熱的偶合作用下傳熱微分方程，並對其進行解析求解:在考慮湯姆遜效應的影響下得出一類跟三類邊界條件下傳熱方程的解析解，在忽略湯姆遜效應的影響下得出二類跟三類相的邊界條件下傳熱方程的解析解。 -
In this paper, the foundamental principles of fd _ bpm ( finite - difference beam propagation method ) used to simulate and calculate the process of beam propagation is first introduced. then ， the theory of boundary condition is carefully presented. based on those theories mentioned above, a new kind of fd _ bpm arithmetic is brought forward. compared with the traditional arithmetic, this one has much more advantages. in virtue of the new arithmetic, author accomplished the whole simulating designs with two kinds of optical splitter ( stright y - junction optical splitter and sine - type optical splitter ), including propagation field simulating, vital parameter calculating, acquired some optimized waveguide parameters ， and finished the template by those results at last
本文主要藉助這種改進的fd _ bpm演算法，對兩種結構的光分路器（直y型光分路器，上升正弦型光分路器）進行了器件設計的軟體模擬，包括對兩種結構光分路器傳輸場進行模擬，並對兩種結構光分路器的重要參數，如波導寬度，分叉角，縱橫比，損耗進行了模擬計算；得到了一些有價值的優化波導結構參數值，根據這些優化值設計製作了光刻模板。 -
For instance, the development of the boundary - layer shape parameter can be prescribed on the upper surface to allow for maximum lift or extended runs of laminar flow, depending on the design requirements
比如開發了邊界層的形狀參數，可以指定允許的最高表面上取消或延期舉辦層流、視乎設計要求 -
Presents the new independentmodal - space variable structure control for flexible structures with distributed parameter model, which is decoupled into a number of 2 - dimensional subsystems in terms of coordination transmission where, the variable structure control law is designed within the given boundary of structural uncertainty and disturbance, and concludes from simulation results that the algorithm is not only simple so as to accomplish in real time, but also is very robust
對具有分佈參數模型的撓性結構提出了模態空間變結構控制方案，利用坐標變換把整個系統分為若干個獨立的二維模態子空間.在每個獨立的模態子空間內，在給定參數不確定性范圍和干擾力矩范圍的情況下，設計變結構控制控制器.通過模擬驗證了控制演算法的有效性;控制演算法簡單，易於實時完成，又具有較好的魯棒性 -
The visualization applied program can be used to render accurately and quickly the graphics of the 3d local gravity and magnetic sources and the terrain on the condition of complex terrain. the program can uncover the spatial extension law of the 3d local gravity and magnetic sources, the user can decide to terminate the boundary inverse or modify the parameter and continue the inverse according to the 3d graphics
局部重磁場源可視化應用程序能夠準確而快速生成復雜地形條件下的三度異常源和起伏地形的真實圖形，可視化應用程序能夠顯示局部重磁場源的空間分佈規律，用戶可根據生成的三度體圖形，確定是結束邊界反演還是修改相關參數，重新進行邊界反演。 -
The control panel of this preprocessing system is simple and convenient. the friendly interface between computer and human allows the users easy to complete all the preprocessing operations, including the model ’ s meshing, the setup of the material parameter and welding processing parameter, the initial conditions and boundary conditions ’ definition etc, preparing for the simulation subsequently. so any operator with lack of knowledge in fem or english can finish the welding simulation during using this preprocessing system
該前處理系統界面簡潔明了，操作簡單方便，用戶按照該系統界面進行操作即可完成模型網格劃分、材料性能參數的輸入、熱源模型選擇及焊接參數的輸入、以及初始條件和邊界條件的設置添加，為模擬計算做好準備，從而使工廠的一般技術人員也能完成焊接過程的模擬計算。 -
Especially, when the isocline of x is monotone decreasing in 0 < x < 1, the svstem has no limit cycle and is globally stable ; next, we construct a saddle bifurcation at the boundary equilibrium and a degenerated bogdanov - takens bifurcation at the interior equilibrium by choosing appropriate parameter values in the following two sections, where our work are based on the theory of central manifolds and normal torms. we prove that is a codimention 3 focus - type equilibrium. system ( 6. 1 ) will have two limit cycles at some appropriate bifurcation parameter values, and have homoclinic or double - homoclinic orbits at some other appropriate bifurcation parameter values ; at last, we study the qualitative properties of the system at infinite in the poincare sphere
因為系統在（ 0 ， 0 ）點處沒有定義，這給研究其在（ 0 ， 0 ）附近的動力學性質帶來了困難，我們應用文獻[ 17 ]中關于研究非線性方程奇點的系列理論和方法，圓滿解決了這一問題，給出了第一象限內當t +或t -時，在全參數狀態下系統的軌線趨于（ 0 ， 0 ）點的所有可能情況，其相圖也得以描繪；並且，系統不存在極限環的幾個充分條件我們也予以列出，當x的等傾線在0 x 1范圍內遞減時，系統不存在極限環，全局漸近穩定；然後，我們以中心流形定理和正規型方法為主要工具，巧妙選擇參數，分別構造了一個余維2的鞍點分岔和一個余維3退化bogdanov - takens分岔，證明了平衡點是余維3的焦點型平衡點，存在參數， m ，的值使得系統（ 6 . 1 ）有兩個極限環，還存在參數， m ，的另外值使得系統（ 6 . 1 ）有同宿軌或雙同宿軌。
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