查询词典 dynamic system

ABSTRACT Hybrid systems contain two distinct types of systems, continuous variable dynamic system and discrete event dynamic system , that interact with each other.

混合系统是由连续变量动态系统和离散事件动态系统相互混合、相互作用而形成的统一的动态系统。

For the dynamic system of discrete coupled and nonlinear three phase voltage source PWM rectifier, the cycle switch average operator is introduced to transform the discrete system into continuous and the small signal perturbation method is used to transform the nonlinear system into linear, the small signal dynamic mathematical models are set up.

中文摘要：针对三相电压型PWM整流器这个离散的、耦合的、非线性的动态系统，引入开关周期平均算子将离散的系统变换为连续的系统，应用小信号扰动法将非线性的系统化解为线性的系统，进而分析系统的小信号动态数学模型。

For the dynamic system of discrete coupled and nonlinear three phase voltage source PWM rectifier, the cycle switch average operator is introduced to transform the discrete system into continuous andthe small signal perturbation method is used to transform the nonlinear system into linear, the small signal dynamic mathematical models are set up.

中文摘要：针对三相电压型PWM整流器这个离散的、耦合的、非线性的动态系统，引入开关周期平均算子将离散的系统变换为连续的系统，应用小信号扰动法将非线性的系统化解为线性的系统，进而分析系统的小信号动态数学模型。

Some possible applications of wide-area measurement system in power system are gathered up, including applications in static analysis, recording dynamic procedures of the whole power network and post-contingency analysis, identifying and calibrating the dynamic model of power system, transient stability prediction and control, voltage and frequency stability monitoring and control, analyzing and damping the low frequency oscillation, global feedback control, fault location and parameter measurement o...

综述了广域测量系统(Wide-Area Measurement System，WAMS)在电力系统稳态分析、全网动态过程记录和事后分析、电力系统动态模型辨识和模型校正、暂态稳定预测及控制、电压和频率稳定监视及控制、低频振荡分析及抑制、全局反馈控制、故障定位及线路参数测量等方面的应用。通过这些应用可以看到，WAMS给电力系统分析与控制提供了新的视角和解决方法，值得深入研究。

In the article, the dynamic logical diagram formulation and its mathematics description for the ESD framework are produced. In order to enhance its function of modeling and connection with the system structure, this paper proposes a strategy of hierarchical modeling, and unifies a new algorithm of ESD, which develop a sort of software of dynamic system visualization modeling and analysis based on the ESD.

文中对ESD的定义进行了完善，给出了ESD框架的动态逻辑图元表示形式及其数学描述，为提高其建模功能以及与系统结构关联的能力提出了层次化建模策略，并结合新的ESD算法开发了基于ESD的动态系统可视化建模与分析软件。

In the first part, considering a linear dynamic system, system's differential algebraic equations are converted into algebraic equations using Simpson's integration rule, which can be solved easily by the steady-state data reconciliation theories for this dynamic data reconciliation problem.

在第一部分，考虑线性动态系统情况下，以辛普森积分法将系统动态方程式转换成代数方程式，接下来可利用稳态数据调和理论解决此动态数据调和的问题。

To overcome the difficulties and the draw backs in modeling dynamic systems by traditional methods, a hybrid evolutionary modeling algorithm was proposed to model the Dynamic system with a system of ordinary differential equations whose main idea was to embed string coded idea and evolution algorithm optimize system.

针对传统方法解决动态系统微分方程建模问题所遇到的困难和存在的不足，设计将方程进行串结构编码并用进化方法进行演化建模的算法，以串形结构表示结构，用进化算法优化结构和参数，成功地实现了动态系统的常微分方程组建模过程的自动化。

A novel dynamic recurrent fuzzy neural network based on TSK fuzzy model is presented to the nonlinear dynamic system, it can gain better tracking ability in the identification or control to nonlinear dynamic system.

3针对非线性动态系统特点，提出了一种新型的基于TSK模糊推理的动态回归网络结构，并给出了一种新的学习算法—约束优化学习算法。

Because the Petri net can describe intuitionally system characteristics, such as the system's dynamic, asynchronous, concurrent and so on, it very suits to describe the Discrete Event Dynamic System such as logistics system.

本文首先对制造企业内部的几个基本生产过程中的物流进行了分析，分别建立了拉动式生产系统Petri网物流模型、推动式生产系统Petri网物流模型、流水线生产的Petri网物流模型及混合生产线的Petri网物流模型等。

Thus video streaming on-demand, which is the most popular and most important distribution mode of streaming media, even today is still severely limited in scope and reach.In order to improve the QoS of the VOD system, this dissertation introduces several principles to design the video streaming on-demand system, then presents three kinds of system structures according to the scale of the VOD system, and then designs several corresponding schemes or policies to optimize the performance of the VOD system.In chapter 3, we design a multicast scheme named Dynamic Batched Patching, which can be considered as an ameliorative Patching algorithm.

本文将视频流点播系统按应用规模分为三种体系结构，然后提出了相应的解决方案来满足不同应用规模条件下的各个设计原则：在本文第三章中提出了一个称为Dynamic Batched Patching的实时视频流点播多播传输机制，该传输机制实现简单，可以有效地减少对客户端缓存容量的需求，减少客户端的启动延时，最主要的是在本传输机制中系统的资源利用率非常高，从而大大的提高了系统的用户接纳容量。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。