模型理论

In many fields, such as society, economy, business and physical science, factor analysis models is applied in the multi-index system of these fields, but factor analysis models and theory is not complete, which cumbers the application and development of factor analysis.

摘要本文应用因子分析模型L及其解，求出了经典因子分析模型中公因子载荷、公因子、特殊因子的精确解，解决了经典因子分析模型和理论存在的9个问题，进一步，指出了经典因子分析模型及其解根本的局限性问题：公因子解没有排除观测误差的干扰，不能达到降维的目的等。

In general, the major results are:(1) Established the geometrical model for the enwinding of the wire rope in the roller, such as the inclination of the wire rope and the climbing equation of roller in the commutation process;(2) Established the tensile force kinetic model for the enwinding wire rope used the Lagrange kinetic equation and the continual kinetic theory in the start up and retard moment. Solved the equations by the method of modal analysis and separation of variables(3) Based on the analysis on the enwinding mechanism of the wire rope, we did the research on the mechanics behavior of the wire ropes enwinding process.(4) According to the research above, we made the computer program to solve the mechanics models. And after parametric analysis, we made the suggestion for the improving of the current wire rope enwinding system.

主要研究工作有：(1)建立了钢丝绳在滚筒缠绕几何模型，研究了钢丝绳缠绕过程极限偏角及换向过程在滚筒爬坡机理及几何模型；(2)依据LAGRANGE系统广义动力学方程、连续体动力学理论分别建立起升系统启动及制动过程钢丝绳缠绕快绳拉力的动力学模型，并分别采用模态分析法及分离变量法求解；(3)结合对钢丝绳在钻机滚筒缠绕机理分析的基础上，研究了钢丝绳在滚筒缠绕过程力学行为；(4)编制计算机仿真程序对上述模型进行求解，在参数分析的基础上提出对目前钢丝绳缠绕系统结构改进建议。

The applications of outgassing technology in industrial field were summarized with three kinds of outgassing models analyzed,ie.

总结了放气研究在工业领域的各种应用，分析了真空环境下非金属材料放气的三种模型：Schram模型、扩散模型和基于马列夫理论吸附扩散模型。

In consideration of the chain grate stoker with steam capacity of 20t/h,based on experimental testing data,a fast modeling with step input,was set up by calculating transfer function on step response curve,gets model parameters on "two-point method" on the first,and then modifies those parameters with "curve fitting method" through MATLAB/SIMULINK software,proves that the combination of "two-point method" and curve fitting mothod...

对阶跃响应曲线先采用&两点法&得出模型参数，再采用&曲线拟合法&对模型参数进行修正，从而实现系统动态特性建模。着重讨论了针对阶跃响应曲线，在&两点法&建模的基础上，进一步采用在MATLAB/SIMULINK软件环境下&曲线拟合法&对模型进行修正，发现&两点法&与&曲线拟合法&相结合的方法可以更准确地对系统进行建模。此方法可为锅炉燃烧优化设计、热力系统仿真研究提供热工对象理论模型，也可用于控制系统调试时控制参数的预选择。

The predicted models of plate crown , the prediction and feedback models of plate shape are set up on the basis of Ben Cheng's elastic deformation theory by simplifying and discretizing the models.

以本城轧辊弹性变形理论为基础，通过模型简化和离散化建立了板凸度预报模型、板形预测模型及板形控制反馈修正模型。

Then it conies up with the thoughts system of performance management for service enterprises. At last, it analysis the present situation of customer satisfaction with Shijiazhuang Branch of Railway Communication and Information Co.ltd .

本文先后从概念模型研究和度量模型两方面综述了顾客满意的基本理论及测度方法，并介绍了本研究采用的测量模型和评价指标体系；进而阐述了如何用满意度——重要度矩阵结合按相关性的指标分类来对测评结果进行分析；然后，在研究顾客满意与企业绩效的价值关系时，构建了顾客满意测评指标、服务属性和企业活动之间的映射模型；接着提出了绩效管理的基本思想体系；最后，针对铁通石家庄分公司用户满意度状况进行了实例分析。

Firstly, SRM inductance function Land flux linkage function ψ are derived from ANSYS which is used for electromagnetic field analysis. Secondly, the non-linear inductance model and non-linear flux model of switched reluctance starter/generator are finished by MATLAB. Based on the latter, the start characteristic of SRM is studied comprehensively. Finally, on the basis of academic research, we completed the starter/generator stand of test and experimented on a sample motor and then experiment waveforms are obtained which verified the simulation model.

首先利用 ANSYS 软件仿真计算出开关磁阻电机的电感和磁链函数，并以此为基础利用 MATLAB/SIMULINK 建立了开关磁阻起动/发电系统的非线性电感模型和非线性磁链模型，并通过非线性磁链模型对开关磁阻电机的起动特性和发电特性进行了深入分析与研究；最后在理论分析的基础上，通过开关磁阻起动/发电系统试验平台对原理样机进行实验，给出了系统实验波形，并验证了该模型的正确性。

With the geometry model of the ball end mill, the method of theoretic cutting force analysis combined with the identification of the experimental coefficients of milling forces is used to develop the milling force model of a helical ball end mill.

给出了球头铣刀刃线几何模型，采用理论切削力分析与实验-系数识别相结合的方法，建立了新的螺旋刃球头铣刀的铣削力模型；建立了考虑刀杆柔性的球头铣刀铣削振动模型；考虑刀具动态变形和工件表面波纹对切削厚度的再生反馈，建立了球头刀铣削动力学模型，对动态铣削过程进行了仿真，证明离线仿真可以对铣削过程动特性做出准确的预测。

In order to verify the results of theoretical analysis, the shaking table model tests, including free field, plain subsoils of building, and sloped subsoils of building have been conducted.

为了验证理论分析结果，进行了振动台模型试验，包括自由场地的模型试验，有建筑物的地基模型试验，和建筑物坡形地基模型试验。

Theoretically, the error model of maximum direction is more rigorous for describing error of transition curve lines.

通过实例说明了εm模型是理论上更加严密的缓和曲线误差模型，而εσ模型是一种简化的描述模型。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。