approximate model造句
例句與造句
- This particular half-sine pulse is only a very approximate model for the actual state of affairs .
這個特定的半正弦脈沖對實際情況來說只是一個非常近似的模型。 - Approximate model method for system design and its application
系統(tǒng)設(shè)計的近似模型方法及其應(yīng)用 - Based on the traditional plastic limit analysis , an improved rigid - nonlinear hardening approximate model is established
摘要應(yīng)用傳統(tǒng)的極限分析理論，提出一種改進的剛性非線性強化近似模型。 - However , the analyses of suspension bridge structures are still preferred by finite displacement analysis based on 2d ( two - dimensional ) or spatial skeleton approximate models
但大跨度懸索橋的分析至今還局限于用平面或空間骨架近似模型。 - Using the approximate model of main steam pressure and linear quadratic optimal control theory , the lq sub - optimal control strategy is brought forward
基于主蒸汽壓力降階近似模型和二次型最優(yōu)控制原理，文中還給出了主蒸汽壓力的lq次優(yōu)調(diào)節(jié)策略。 - It's difficult to find approximate model in a sentence. 用approximate model造句挺難的
- The second section : the process of induce heating is a complex process . after analysis the heating mechanism , this thesis build up an approximate model for the system
二、感應(yīng)加熱的過程是一個很復(fù)雜的工業(yè)過程，它涉及電、磁及熱等多種物理過程。 - Additionally , the comparison between these two methods is made . due to the approximate model - independence of anc method , the final results are adopt the values given by the anc method
由于anc方法的模型近似無關(guān)性，采用該方法給出的值作為最終結(jié)果： 13c基態(tài)、第一和第三激發(fā)態(tài)anc系數(shù)分別為1 - We use a scaling matrix which make the algorithm generate sequences of point in trust region and the interior of the feasible set . because of the boundedness of the trust region , trust region algorithm can use non - convex approximate models
構(gòu)造合理的仿射變換矩陣，在投影空間構(gòu)造信賴域子問題，產(chǎn)生迭代方向，使迭代點既保持在信賴域內(nèi)，又是嚴格可行域的內(nèi)點。 - A study is made of the theory of linear fractal interpolation and a model called fractal interpolation approximate model is presented from the self - similarity of share price signals . also , a comparison is made of the interpolation method and times
研究了線性分形插值理論，結(jié)合股價信號的自相似性，提出了股價序列分形插值逼近模型，并作了插值方法和插值次數(shù)的比較。 - For the characteristic of the river course and the conditions of water - sand are different in adjacent year . it follows the thinking that respectively build approximate model by the data of water - sand in different years , then finds out the forecasting model by recurring the approximate parameter array of each year
由于連續(xù)年份下河道特性、水沙條件的差異，本文采用各年水沙資料分別建立擬合模型，各年擬合參數(shù)按時間序列遞推給出預(yù)報模型的研究思路。 - Control systems in modern automatic engineering are nonlinear , time - changed and indefinite . lt is difficult to model by traditional method , even sometime impossible . under these circumstances we should apply model identification to gain the approximate model of object for effective control , there are many models to be chosen , fuzzy model is one of them , it is put forward with the development of fuzzy control . fuzzy model has characteristics of general approximation and strong nonlinear , it is fit for describing complex , nonlinear systems . to avoid rules expansion when the number of input values are very big . in this paper we apply hierarchical fuzzy model to resolve this problem , we also illustrate it has general approximation to any nonlinear systems . genetic algorithm is a algorithm to help find the best parameters of process . lt has abilities of global optimizing and implicit parallel , it can be generally used for all applications . in our paper we use fuzzy model as predictive model and apply ga to identify fuzzy model ( including hierarchical fuzzy model ) , we made experiments to nonlinear predictive systems and got very good results . the paper contains chapters as below : chapter 1 preface
現(xiàn)代控制工程中的系統(tǒng)多表現(xiàn)為非線性、時變和不確定性，采用傳統(tǒng)的建模方法比較困難，或者根本無法實現(xiàn)，在這種情況下，要實現(xiàn)有效的控制，必須采用模型辨識的方法來獲取對象的近似模型，并加以控制，目前用于系統(tǒng)辨識的模型種類很多，模糊模型是其中的一種，它隨著模糊控制的發(fā)展而被人提出，模糊模型具有萬能逼近和強非線性的特點，比較適合于描述復(fù)雜非線性系統(tǒng)，為了解決模糊模型在輸入變量較多時規(guī)則數(shù)膨脹的問題，文中引入遞階型模糊模型，并引證這種結(jié)構(gòu)的通用逼近特性。遺傳算法是模擬自然界生物進化“優(yōu)勝劣汰”原理的一種參數(shù)尋優(yōu)算法，它具有隱含并行性和全局最優(yōu)化的能力，并且對尋優(yōu)對象的要求比較低，在工程應(yīng)用和科學(xué)研究中，得到了廣泛的應(yīng)用，本文將遺傳算法引入模糊模型的辨識，取得了很好的效果。 - The innovations of this thesis are as the follows : 1 ) it is analyzed that the lower - order jacobi - anger expansion model for an incoherently distributed source has better accuracy performance than some other approximate source models such as space frequency model , two - point source model , and low - rank approximate model . using the parametric decoupling property of the ja - based model , a novel angular parameter estimator is proposed , which is very robust in case of large angular spreading
本文從這三個方面開展了空間分布源波達方向估計研究，創(chuàng)新點包括： 1 )分析了低階jacobi - anger級數(shù)展開近似模型的誤差性能；利用該近似模型的參數(shù)解耦特性，提出了一種新的波達方向估計器，在大角度擴展條件下，該估計器表現(xiàn)非常穩(wěn)健。