查询词典 model theory

In this article, the model of human dual-eye and the Binocular Parallax theory are analyzed and a dual-camera model has been put forward.

本文着重分析了人眼双目成像的视觉模型和视差原理，建立了摄像机对模型。

In accordance with these questions, one kind of method solving these issues was put forward in this text, and namely adopting mathematics to build the method of pattern, by w-ay of studying the big needle drum system of PASSIM's cigarette machine, to use the mathematical model of big needle drum system of " black box " method establishment, and uses whole parameter and the correlation coefficient to map out the big needle drum system mathematical model of least square method, the question time lapse that what in accordance with the system exists pure adopts Smith compensator to estimate the compensator in advance solving the issue of system lag, and uses whole fixed method of frequency conversion control engineering and PLC's control engineering and PID etc to put into effect transforming to the system, and finally by way of theory verify and reality to verify to prove the success of system transformation.

针对这些问题，本文提出了一种解决这些问题的办法，即采用数学建模的方法，通过研究PASSIM卷烟机大针鼓系统，利用"黑匣子"方法建立大针鼓系统的数学模型，并运用最小二乘法整定出大针鼓系统数学模型的参数及相关系数，针对系统存在的纯时滞问题，采用史密斯预估计补偿器来解决系统滞后的问题，并利用变频控制技术和PLC控制技术、PID参数整定方法等对系统实施改造，最后通过理论验证和实际验证证明了系统改造的成功。

It becomes more difficult to manage, integrate and share the control system real-time data when we set up the industrial real-time database because of complicated affair between every department and isomeric character of the system. A three-level-structure model and the method to establish database is provided based on CORBA criterion with its character of being regardless of programming languages, hardware platform and network protocol . A universal real-time database faces multi-system is also set up by learning the distributed criterion, it can realize the request broker , and the application software can visit the database pellucidly ; Thus the power station simulation model can be linked with the control system such as infi90 , ovation and be made use of the control object , a closed simulation and control experiment system is set up. Further more we can build an integrate automatic experiment platform from the simulation object of power plant to the process control and the to SIS. Li Ming(Control Theory and Control Engineering)Directed by associate prof. Lin Yongjun

在创建工控领域实时数据库时，企业各部门间的复杂事务及内部异构性给实时数据的管理、集成和共享带来了一定的困难，根据CORBA规范具有语言无关性、平台无关性和网络协议无关性的特点提出基于分布式计算规范CORBA的三层体系结构模型及建立与维护实时数据库的方法和途径；通过CORBA规范建立面向多个分散控制系统的通用实时数据库，实现数据访问代理，使应用软件可以透明地对实时数据库进行访问、存取、管理；将Infi90、Ovation分散控制系统与火电厂仿真机模型进行有效的互连，以全物理过程仿真数学模型为对象，构建了闭环控制仿真实验研究系统，实现数据的高效连通及管理；进而通过基于CORBA的实时数据库构建一个从火电厂仿真机对象到过程控制设备再到SIS系统的综合自动化试验平台。

To imitating Penna model of the computer simulation, some scholars attempt to portray this model the mathematics theory.

针对模拟模型机制的Penna模型，一些学者试图通过数学理论来刻画。

Based on radar backscatter theory and scatter point model,aimed at the same frequency vibration scatter point of radar target,radar echo universal model is derived and the periodicity of amplitude modulation function and phase modulation function is researched at length.

基于雷达后向散射理论和散射点模型，针对雷达目标的同频振动散射点，详细推导并建立了雷达回波通用模型，对其幅度调制函数和相位调制函数的周期性进行了详细的讨论。

In this paper,the theory model of the distribution of polarized skylight is imitated by a software simulation platform first,and the experiment model of skylight polarization distribution is gained with full-sky imaging polarimetry.

首先通过软件模拟平台模拟了天空偏振光分布的理论模型，并用全天空偏振测量方法获得了天空偏振光分布的实验模型。

By integrating the backmixing theory of Reaction Engineering with predictive model of river pollution in Environmental Quality Assessment study, the predictively longitudinal dispersion model of river quality was got and analyzed.

摘要将反应工程学的返混理论与环境质量评价学的河水污染预测模型结合，得出了河流水质预测纵向扩散模型，并给出了解析解。

Contact-impact model and its discrete schemes for revolute pairs with small clearances ;2. Based on the theory of contact dynamics,the dynamic model with clearances of sizing press roll was established using the method of numerical simulation.

基于接触动力学的理论，利用数值模拟的手段建立了调宽机含间隙的动力学数学模型，采用定步长四阶Runge-Kutta数值积分的方法，详细研究了运动副内间隙对接触力的影响规律。

The basic theory of establishing the grey neural network model is according to the tenet that we set up the grey system model, and then we can constitute a differential equation with the primitive sequence.

本文在这样理论基础上，对现有一阶灰色神经网络模型GNNM（1，1）做了进一步的改进和完善。

Based on the theory of physics and material mechanics, this paper analyses the variation principle of the paper ribbon tension between each printing unit; establishes the mathematic model of unwinding, tension variation between each printing unit and the dynamics model of the dancer rollers.

基于无轴试验平台建立了纸卷开卷的数学模型、机组之间张力变化的数学模型以及张力调节辊的动力学模型。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。