approximate model造句
例句与造句
- This particular half-sine pulse is only a very approximate model for the actual state of affairs .
这个特定的半正弦脉冲对实际情况来说只是一个非常近似的模型。 - Approximate model method for system design and its application
系统设计的近似模型方法及其应用 - Based on the traditional plastic limit analysis , an improved rigid - nonlinear hardening approximate model is established
摘要应用传统的极限分析理论，提出一种改进的刚性非线性强化近似模型。 - However , the analyses of suspension bridge structures are still preferred by finite displacement analysis based on 2d ( two - dimensional ) or spatial skeleton approximate models
但大跨度悬索桥的分析至今还局限于用平面或空间骨架近似模型。 - Using the approximate model of main steam pressure and linear quadratic optimal control theory , the lq sub - optimal control strategy is brought forward
基于主蒸汽压力降阶近似模型和二次型最优控制原理，文中还给出了主蒸汽压力的lq次优调节策略。 - It's difficult to find approximate model in a sentence. 用approximate model造句挺难的
- 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、感应加热的过程是一个很复杂的工业过程，它涉及电、磁及热等多种物理过程。 - 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方法的模型近似无关性，采用该方法给出的值作为最终结果： 13c基态、第一和第三激发态anc系数分别为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
构造合理的仿射变换矩阵，在投影空间构造信赖域子问题，产生迭代方向，使迭代点既保持在信赖域内，又是严格可行域的内点。 - 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
研究了线性分形插值理论，结合股价信号的自相似性，提出了股价序列分形插值逼近模型，并作了插值方法和插值次数的比较。 - 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
由于连续年份下河道特性、水沙条件的差异，本文采用各年水沙资料分别建立拟合模型，各年拟合参数按时间序列递推给出预报模型的研究思路。 - 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
现代控制工程中的系统多表现为非线性、时变和不确定性，采用传统的建模方法比较困难，或者根本无法实现，在这种情况下，要实现有效的控制，必须采用模型辨识的方法来获取对象的近似模型，并加以控制，目前用于系统辨识的模型种类很多，模糊模型是其中的一种，它随着模糊控制的发展而被人提出，模糊模型具有万能逼近和强非线性的特点，比较适合于描述复杂非线性系统，为了解决模糊模型在输入变量较多时规则数膨胀的问题，文中引入递阶型模糊模型，并引证这种结构的通用逼近特性。遗传算法是模拟自然界生物进化“优胜劣汰”原理的一种参数寻优算法，它具有隐含并行性和全局最优化的能力，并且对寻优对象的要求比较低，在工程应用和科学研究中，得到了广泛的应用，本文将遗传算法引入模糊模型的辨识，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
本文从这三个方面开展了空间分布源波达方向估计研究，创新点包括： 1 )分析了低阶jacobi - anger级数展开近似模型的误差性能；利用该近似模型的参数解耦特性，提出了一种新的波达方向估计器，在大角度扩展条件下，该估计器表现非常稳健。