查询词典 dynamic system

Except existing 22 major series of over 3,000 varieties, the perfection of integrated research and development system of Shuangli products and the systematic project, cocurrent project, value project and the application of the principle have formed the dynamic guaranteed system.

除现有的22大系列3000余个规格品种的典型产品外，双力集成化的产品研发体系的完善，系统工程、并行工程、价值工程及可拓学原理的应用，形成了基于敏捷竞争的动态保障系统。

In this paper, a combinatory controller used in an AC drive system is introduced. The advantage of combinatory controller is used to improve the system's performance in dynamic and steady characteristic.

介绍一种用组合控制器控制的交流传动系统，该系统综合利用模糊控制和PID控制的优点，来提高系统的动态和稳态性能。

In this paper, taking one 1900t/h supercritical pressure once—through boiler installed in East boiler company as subject investigated, analyzing the structure and characteristic of unit, from the mechanism of units, based on the law of quality conservation, energy conservation and momentum conservation, having Lagrange fluid particle tracing idea in hydrodynamics field application in analyzing of unit operational characteristic, author build up the nonlinear distributed parameter general dynamic mathematical model of single-phase heating surface or diphase heating surface in the steam-water system for supercritical pressure once—through boiler, which is suitable numerical calculation and simulation for large scale disturbance and full working conditions change, and enough materializing distributed characteristic of thermodynamic parameter in process and time lag characteristic of energy transportation in tache. The transient responses curve of the system main variables under several disturbance are computed by Computer Simulation for the model, and theoretical analysis shows that the simulation results are reasonable.

本文以东方锅炉集团公司的一台1900 t /h超临界压力直流锅炉为研究对象，在分析机组结构和特性的基础上，从机组的工作机理出发，以质量、能量、动量守恒定律为依据，将流体力学领域中的Lagrange流体质点追踪思想用于机组运行特性的分析上，建立了适用于超临界压力直流锅炉汽水系统单相、双相受热面的非线性分布参数通用动态数学模型，该模型适合于大扰动全工况变化的数值仿真计算，充分体现了过程热力参数的分布特性和环节中能量输送过程的时滞特性，并对模型通过计算机仿真得出各种扰动下系统主要变量的响应曲线，从理论上分析了仿真结果的合理性。

During the numeric model processes, the finite element method is used to build the discrete model and analytical theory of the rotor-bearing system. The entire system is divided into several dividable substructures, each of which develops individual systematic mathematic model. Finally, the motion equation of whole structures is combined by the integrity of the dynamic variables and force balances on connections of each substructure.

在数值建模过程中，以有限元素法为基础，建立转子-轴承系统之离散模型与分析理论，将整个系统结构划分成若干个可分离部位的子结构系统，并发展子结构的个别系统数学模型，最后整体结构的运动方程式再以各子结构结合面上节点的动态参数一致性及力系平衡进行结合。

Based on introducing the grey system theory,this paper discusses on the principle of the forecast of equidimensional filling vacancies,advances the dynamic model of grey forecasting of equidimensional filling vacancies in the medium-long term load forecasting of power system,and forecasts the yearly load value of this area in the period of 1999-2009 with the model established by using the historical load data of some areas.

在介绍灰色系统理论的基础上，讨论了等维递补预测原理，提出了电力系统中长期负荷预测的灰色等维递补预测动态模型，并利用某地区的历史负荷数据建模预测出了该地区1999—2009年的年负荷值。

Refer to the especialness of distribution system,the dynamic performance of StatCom control system is explained under the condition of periodic greatly changed amplitude load.

作为无功补偿来讲，它主要用于输电和配电系统中。在配电系统中，采用就地补偿是比较普遍的一种方案。

Industrial economic system is a dynamic evolutional system, and is composed of many economic elements.

产业经济系统是由诸多相互作用的经济元组成的动态演进系统，其主体要素是各产业部门，产业经济系统结构演进意味着系统内各产业部门之间比例关系的动态变化。

For dynamic ice making system is more efficient than static ice making system during the ice formation process and the ice generated is flowable, it gradually become the hot spot.

动态制冰系统因其在制冰过程中的高热力学效率，制得冰晶的可流动性等方面都优于传统的静态制冰，这种制冰方式现已成为国内外冰蓄冷技术的研究重点。

A dynamic examination device is to examine the hydrol ogical data acquisition system and the gate control system. It does much good to the quality and reliability of these two systems being about to the spot.

丁强 设计一套水情和闸控系统动态检测装置，以检测即将在现场使用的水情测报系统和闸门控制系统，对提高这类系统的质量和可靠性大有好处。

Fifthly, by adopt new matrix coordinate system means, found a tricycle WMR"s kinematic model, especially the investigation in the kinematically modeling of steered wheel and non-steered wheel. At the same time, the dynamic modeling of robot"s playing football motion, consummate mobile robots system.

第五，采用新型的矩阵坐标系方法，建立了三轮式机器人的动力学模型，尤其是在导向轮和非导向轮的动力学建模方面进行了深入的研究；同时，对机器人踢足球的运动进行动态建模，进一步完善了移动机器人体系。

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％。