查询词典 dynamic system

On this basis,a set of dynamic signal analysis system is designed by using high cost-effective digital signal processor TMS320F2812DSP.The system can acquisite dynamic signal and process data in the frequency domain,then directly display the value of the signal component of frequency and power,distortion on the LCD.

利用TI公司高性价比的数字信号处理TMS320F2812设计了一种便携式态信号分析仪，该系统信号分析仪可采集动态信号，并处理数据的频域，可直接在LCD上显示信号各分量频率值、功率值、失真度等。

The study on polygonal or chordal action, the associated impact between rollers and sprockets and dynamic loading in the system is carried out with different motion laws.An experimental apparatus is set up to investigate dynamic behavior of intermittent chain drive system thoroughly.

为拾取链节在运动中的振动信号，设计了一套特殊的反凸轮——滑块机构，可实现测试信号线与链节保持同步运动，从而避免了信号线与链节发生缠绕的问题。

This paper introduces the situation of dynamic simulation of power system, design of power distribution system dynamic simulation based on COM and a multilayer digital control network method based on PLC, which uses digital technology nested of the tradition analog cyanic control method.

介绍了基于COM分布式电力系统动态模拟技术和基于PLC多层数字控制网络电力系统动态模拟控制技术的基本结构和技术要点。

It canprovide dynamic responses of the system with changes of wheel load,vehicle velocity, frequency and irregularities of the track, and distribution of dynamic responses in the subgrade can be given, also beused to select parameters, optimize designs and forecast dynamicproperties of the system, etc.(2) Based on Timoshenko beam and geostatic theory, couplingrestricted equations of various finite elements are founded. The restrictedequations have been dealt with by Lagrangian enlarging multipliers.

该模型充分地考虑了系统的空间、时变、耦合特性及路-桥-隧过渡段的设计断面和设计参数，可提供无碴轨道路-桥-隧过渡段系统的动态响应时程及动态响应场分布等，具有合理选择无碴轨道过渡段设计参数、优化设计及预测动力性能等功能，从而为高速铁路无碴轨道过渡段系统的设计提供了理论分析依据。

Based on rail/wheel reaction and track/bride reaction theory and systems engineering theory, new vehicle-track and vehicle-track-bridge system dynamic models are established and discussed in details, including ballast track model and ballastless track model. The characteristics of the models are:(1) vehicle-track and vehicle-track-bridge system dynamic models are coupled in vertical and lateral;(2) track vibration on bridge is taken in account, track on bridge is considered as one or two layer continuous-point supported rail model, according to actual track structure, interaction between vehicle and bridge transfer from track structure;(3) three type of ballastless track models (tieembanked, elastic-tie-block, slab track) are presented;(4) models reflect the main feature of actual vehicle, track and bridge structure, the response computation frequency of models is relatively broad, which can be applied to analyze both low frequency and high frequency vibration.

基于轮轨相互作用和线桥相互作用特点，本文从系统工程角度出发建立了车辆、有碴轨道和无碴轨道、简支箱梁桥垂向和横向耦合系统动力分析模型，该系统模型具有以下特点：（1）车线、车线桥体系均考虑为垂向、横向耦合振动系统，车线间通过轮轨接触几何关系耦合，轨道与桥梁间通过轨道与梁体间的力与位移协调条件耦合；（2）充分考虑桥上线路在车线桥系统中参振作用，根据桥上线路轨道结构特点将桥上轨道结构模型具体化，即对桥上轨道结构视为多层支承体系，车桥间的动力作用通过轨道结构来传递；（3）建立了三种形式无碴轨道动力分析模型，即长轨枕埋入式、弹性支承块式和轨道板式无碴轨道模型；（4）系统模型详细，分析频带宽，适用范围较广。

The basis of static, flat汇交system of forces, torque and couple Department of plane, plane general system of forces, center of gravity and centroid, the internal force and internal force diagram, tension and compression, torsion, bending, stress analysis and strength of the theory of the stability bar , the point of movement, the basic rigid-body movement, points of complex, rigid body planar motion, the movement of particle differential equations, dynamic general theorem, static and dynamic method.

静力学基础、平面汇交力系、力矩与平面力偶系、平面一般力系、重心和形心、内力和内力图、拉伸和压缩、扭转、弯曲、应力状态分析和强度理论、压杆的稳定性、点的运动、刚体的基本运动、点的复合运动、刚体的平面运动、质点的运动微分方程、动力学普遍定理、动静法。

On the basis of systematic formalization description and Petri network theory and it analyzes the internal logical relation and dynamic behavior of closed yard coal wharf logistics system, also the dynamic model of this system.

基于系统的形式化描述和Petri网理论，分析了煤炭码头物流系统的内部逻辑关系和动态行为，进而建立了系统的动态模型。

Analyzing on the fault of local rubbing caused by compatible misalignment of rotors, a dynamic model for the rotor system with misalignment and rub-impact was established. Then the dynamic behaviors of this system, which varied with the values of parallel misalignment and declination, were investigated by using numerical integral method.

以水轮发电机组转子系统为研究对象，针对刚性联轴器综合不对中引起转子局部碰摩的问题，建立了机组转子不对中–碰摩耦合故障的动力学模型和微分方程，并利用数值积分方法研究该系统随不对中平行量和偏角参数变化的动力学行为。

Human body impact biomechanics parameter dynamic measurement system is used in Domestic safe dummy calibration experiment, and has succeeded in realizing the dynamic collection of the acceleration of safe dummy head, acceleration of chest, deformation amount of chest rib, wallop of knee. Results indicate the feasibility and reliability of this system.

结果表明基于混合编程思想的系统软件可方便地实现功能扩展，而且界面清晰直观，便于用户操作，有效地提高了测试系统信号分析处理的水平。

On the background of mobile computing, distributed system, agent system and ontology, the author explores the mobile computing in limited environment at three levels, i.e., mobile computing formal model, mobile ontology and application model. Some targets of the research works include the dynamic ambients calculus, robust ambients calculus and mobile ontology. Some innovative contributions of the dissertation are enumerated as: 1、Proposing a mobile computing dynamic ambients calculus.

论文研究工作基于陕西省十五科技攻关课题&移动嵌入式电子商务平台及关键技术研究&，以移动计算、分布式系统、Agent系统、本体论等相关领域技术为背景，从移动计算形式模型、移动本体论、应用模型三个层次研究了面向受限设备的移动计算技术，内容主要涉及移动计算形式模型中的动态环境演算、抗干扰鲁棒环境演算以及面向移动领域的移动本体论等，研究工作取得了如下创新性成果： 1、提出了跨平台、跨网络的动态环境演算。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。