reduced-order model 中文意思是什麼
reduced-order model
解釋
降階模型-
Based on the multi - scale representation theory, we present a reduced order model for the solving of the inverse problem. also the relative error covariance matrix is used to analyze the performance of models with different orders ; 4
基於小波多尺度表示理論給出逆問題求解的多尺度降階模型，同時用相對誤差協方差矩陣對階數不同的降階模型的估計精度進行分析； 4 -
The seismic behavior of longitudinal middling - high r. c shear wall with frame column is discussed through model experimentations and finite element methods in this paper, after taking frame - shear wall structure of a main factory building of the large capacity power plant as experimentative prototype. the major work as follow : in order to appliance pseudo static test, the longitudinal middling - high r. c shear wall with frame column in the large capacity power plant ' s main factory building has been simulated to a model structure with 1 / 15 reduced - scale. the contents of study are process of cracking, course of damage, skeleton curve, rigidity degradation, ductility characteristic etc. that the seismic behavior of this kind of middling - high r. c shear wall is excellent has been proved by chubby hysteretic curve and fine capacity of energy dissipation
本文以某大型火電廠主廠房縱向框架一剪力墻結構為原型，通過模型試驗和有限元分析，研究了縱向帶邊框柱中高剪力墻結構的抗震性能問題，主要內容有：選用1 15縮尺比把某大型火電廠主廠房縱向帶邊框柱剪力墻原型結構模擬為一個模型結構，並進行了偽靜力試驗，研究了這類縱向帶邊框柱中高剪力墻結構的開裂與破壞過程、骨架曲線、剛度退化、延性性能等問題，試驗滯回曲線飽滿，消能能力強，說明此類中高剪力墻的抗震性能較好。 -
Investigated the basic theory of the coupled cfd / csd simulation of nonlinear unsteady aerodynamics and prepared basic data for reduced order model. 2
探討了cfd csd耦合技術預測非線性非定常氣動力的基本原理，為非定常氣動力降階模型準備數據。 -
Integrated ase design and coupled cfd / csd simulation technology and firstly applied the reduced order model based on volterra series to the design of ase system 2
將ase系統設計同cfd csd耦合模擬技術相結合，首次將基於volterra級數的非定常氣動力降階模型用於氣動伺服彈性系統的設計。 -
Investigated the reduced order model for nonlinear unsteady aerodynamics based on volterra series, especially the identification method of the volterra kernels and studied the application domain and accuracy of the model
研究了volterra級數在非定常氣動力降階模型中的應用，特別是volterra核的計算，並對volterra級數模型的適用范圍和精度進行了評價。 -
Firstly, a reduced order model of this flexible structure is obtained by frequency domain identification, then unstructured uncertainties constituted by neglected modes are taken care of in the time of design process by choosing appropriate weighting functions, arid finally a robust feedback controller is designed based on the reduced order model and the approximate knowledge of unmodeled uncertainties
首先通過頻域辨識得到柔性結構的降階模型，而剩餘高階模態構成的非結構不確定性，通過對權函數的選擇在設計階段就加以考慮，然後基於降階模型和未建模不確定的近似特性設計了魯棒反饋控制器。 -
A powerful tool of dynamical system analysis named normal form method is presented in this dissertation, and then it was used to analyze oscillation phenomena in interconnected power grids. using nonlinear coordinate transformation of normal forms, a fully described power system can be converted to an equivalent reduced order model, which can still use the conventional modal analysis of small signal stability problems
論文將動力系統非線性分析的正規形理論應用於互聯系統低頻振蕩分析中，利用正規形方法的非線性坐標變換，將高階電力系統轉化為等價的低階系統，在保留非線性信息的同時，使其仍然可以使用常規小信號穩定研究的模式分析方法。 -
The multiscale sample paths based on distinctive order tree are presented by computer simulation. second, we present the method of 3x3 - order tree - based of redundant multiscale representation for 2 - d markov random fields, and we propose a class of non - redundant multiscale model for reduced - order approximately representing gaussian markov random fields making ties to multiscale analysis
2 、給出了2 - d馬爾可夫隨機場基於3 3階樹有冗餘的多尺度表示方法，並結合多尺度分析的思想，建立了2 - d高斯馬爾可夫隨機場降階、近似、無冗餘的多尺度表示模型。 -
Different results specify that the first kind of cost function is sensitive to the mismatch of ocean depth and receiver location, but is insensitive to sound speed profile ' s % $ jai8x9 @ t $ m & z mismatch and has high accuracy of depth localizaion ; the second kind of cost fimction is insensitive to all three kinds of mismatch, but its resolution of depth is very low ln order to overcome the cost function ' s sensitivity to mismatch, improvemedt of the accuracy of time delay estimation and model calculation may be adopted, when both conditions are reached, the sensitivity wiil be greatly reduced and the resolution of range and depth will be improved at the same time
模擬結果表明，第一類代價函數對海底深度和基陣傾斜失配是敏感的，對聲速失配卻不敏感，並且能夠獲得較高的深度定位精度；第二類代價函數對三種失配都不敏感，只是深度解析度較低。為了克服代價函數對失配的敏感性，可採用提高時延估計精度和模型計算精度的方法。當兩個條件滿足時，敏感性得到極大的抑制並獲得了較高的距離和深度估計精度。 -
Firstly, a new iterative version of prony analysis is proposed, which has better performance than the conventional one. then the pattern recognition of power grid ' s transient response and identification of reduced order linear model using prony method are discussed in detail
提出通過迭代演算法以提高prony分析的精度，然後詳細討論了該方法在電網暫態響應的模式識別，電網降階線性模型等值等方面的應用。 -
The second part of the thesis includes a derivation of reduced order models for the activated sludge process. firstly, the paper introduces the derivation of time - varying linear state - space models for the anoxic part and the aerobic part. secondly, by integrating the anoxic part model with the aerobic part model, we can get the resulting models - a time - varying bilinear state - space model for the activated sludge prenitrification system
為了控制應用的需要，本文首先分別建立了缺氧池和好氧池的時變線性狀態空間模型，然後把好氧池和缺氧池的時變線性狀態空間模型結合起來得到由缺氧和好氧兩部份構成的前硝化活性污泥系統的時變雙線性模型，最後簡單描述了理想狀態下沉澱池的模型。 -
2 ) by analyzing the information and conditional information description mechanism of system states, the problem of stochastic model reduction is investigated based on state aggregation. the information loss and conditional information loss between the full - and reduced - order models are measured by entropy, while the independence and conditional independence within me components of aggregated state are measured by kullback - leibler information distance. several model reduction methods for stable and unstable linear systems are derived by employing two criteria to get aggregation matrices : the minimal information loss and the maximal independence
2 ）分析了隨機系統狀態空間模型中的信息和條件信息描述機制，以shannon熵為手段描述線性系統模型降階過程中的信息和條件信息損失，以kullback - leibler信息作為衡量降階模型狀態向量各分量之間統計獨立性的測度，針對穩定和不穩定系統研究基於狀態集聚的模型降階問題：分別運用最小信息損失準則和最大獨立性原則，得出幾種狀態集聚的信息論方法，並討論降階模型的性質、階次的確定、系統噪聲分佈特性等問題。 -
Then the high order model was reduced by the modal aggregation method
採用模態集結法對其高階模型進行降階。 -
Design method of active control law based on reduced order model of unsteady aerodynamics for aeroelasticity
基於非定常氣動力低階模型的氣動彈性主動控制律設計 -
In order to simulating rapidly and analyzing the dynamic behavior of the whole mems but not reducing accuracy significantly, the terminal behavior of multi - terminal components was modeled as reduced - order model ( or called macromodel ). upon the finite element model theory micro - mechanical devices or components were modeled in the spatial, which afforded theoretic foundation and technical support to mems system - level design
為了便於在不顯著影響精度而能快速地模擬與分析mems整個系統動態行為，通過器件或組件的降階模型（或稱為宏模型）方法描述了多埠組件的埠行為，並採用有限元模型理論在三維空間內建立了微機械器件或組件宏模型，為系統級設計所需要的組件庫的建立提供了理論基礎和技術支持。 -
The selective modal analysis method ( sma ) based on the tradition equivalence second - order model achieves the reduced - order calculation for the electromechanical modes, but its calculation precision is n ' t higher and sometimes it may lose eigenvalues
基於傳統等效二階模型的選擇模式分析法，雖然實現了多機系統機電模式的降階計算，但存在著計算精度不高和特徵根「丟失」現象。 -
Based on the review and present tendency analysis for small signal stability research, in this thesis, the reduced - order analysis method for small signal stability of multi - machine power system using detail model is researched
本文在回顧分析電力系統小擾動穩定研究的發展歷程及其研究現狀的基礎上，開展了基於詳細模型的多機電力系統小擾動穩定降階分析方法的研究工作。 -
Based on a reduced - order model, the vsc of flexible rotor - magnetic bearing system is also investigated. a master - slave controller composed of a pc586 and a tms320c50 dsp board is build and a flexible rotor - magnetic bearing test rig is developed. simulation and experimental results show that the vsc is insensitive to the spillover problem due to the model truncation and parameter uncertainty
結果表明，變結構控制器對于因模態截斷及非並置問題導致的未建模動態以及因系統自身特性變化而導致的參數攝動具有不敏感性，系統在上浮過程、受到外界擾動及復雜運轉情況下的性能均優于pid控制器。 -
When it comes to the aeroservoealstic analysis and design, the first problem is to construct a reduced order model, convenient to the design of active control system
研究氣動伺服彈性分析與設計，首要的問題是建立一個便於進行主動控制系統設計的低階模型。 -
The order - reduced results are verified by comparing the zeros, poles and outputs curves before and after the order reduction and applying the linear quadratic optimal control law for low - order model to the high - order model
通過零極點比較、輸出曲線比較和將針對低階模型設計的線性二次型最優控制律加入原高階模型等方法對降階結果進行了驗證。
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