Based on a lot of simulations of different algorithms for two - terminal fault location which were carried out on the transmission line with distributed parameter , the robustness of the algorithms , i . e . , its capability to adapt to different types of faults and to suppress all kinds of disturbances is explicitly put forward 在对基于分布参数线路的双端测距算法进行大量仿真的基础上,明确提出了双端测距算法的鲁棒性问题,即算法对各种不同类型故障的适应能力和对综合测量误差的抑制能力。
In chapter 4 , considering the features of high voltage transformer and the difficulties to make it , a reasonable design scheme with src was proposed , which efficiently reduced negative influence of distributing parameters of transformer on switching power supply and could completely utilize leakage inductance as resonant inductance 第四章中分析了高频高压变压器的特点及难点,提出了合理的串联谐振变换器的设计方案,能够完全利用变压器的漏感作为谐振电感,有效地降低了分布参数给高压大功率开关电源所带来的不利影响。
In order to study the operation characteristics of hpacdhws , distributed parameter simulation models of the fin heat exchanger and the plate heat exchanger are built up . the compressor model is founded in map - based method , and the thermodynamics expansion value model is built up in force balance method . the dynamic system model is the efficient connection of all component models by laws of equalization of mass , momentum and energy 为了研究hpacdhws的运行特性,本文利用分布参数法分别建立了翅片管换热器和板式换热器的动态数学模型,采用图形法和力平衡法分别建立了压缩机和热力膨胀阀的集总参数计算数学模型,并基于质量、动量和能量守恒定律等约束条件,建立了hpacdhws的动态仿真模型。
Moreover , the thermal storage device model is built up in order to understand its thermal storage performance . its model includes a helical heat exchanger pipe model and a hot water storage tank model . the distributed parameter simulation model of the helical heat exchanger pipe and the planar mathematics model are 此外,为了解hpacdhws中蓄热装置的蓄热特性,建立了螺旋管换热器的分布参数模型,并根据传热学和流体力学理论,建立了二维蓄热水箱的流动及传热数学模型。
Used regulations method calculating , analyzing and comparing the lightning protection performance with field data for the line firstly , . then put forward more reasonable model ( distributing parameter model ) to calculate the surge impedance of tower combining the existing model and validate by emtp , furthermore studied the striking distance factor based on electromagnetism 首先利用规程法对线路的耐雷性能进行计算、分析,并与现场数据比较;同时结合目前对杆塔波阻抗的研究方法,提出一种更合理的杆塔波阻抗计算模型?杆塔分布参数模型,并利用emtp进行仿真计算和验证。
Based on the theory of thermodynamic of refrigeration system , i . e . , the viewpoint of dynamic , distributed parameters and parameters quantitatively coupled , and with the application of microelement method , this thesis is contains a theoretical and experimental research on the structural characteristics and performance of small - scale cold storage . main contents of this thesis are as what follows : first , the key component sub - models for a small - scale cold storage are developed 本文运用“制冷系统热动力学”理论,以“动态” 、 “分布参数”和“参数间定量耦合”的观点,用“微元”的方法,对型号d045 ? 35 110gfd蒸发器、型号lcu - 32fj冷凝机组和型号tex2 - 2 . 3热力膨胀阀等主要部件组成的小型冷库的结构特点和运行性能进行了理论和实验研究。
However , due to the elastic deflection and vibration of the links , the flexible manipulator becomes an infinite dimension mimo system with distributed parameters , and is highly nonlinear and strong coupling . therefore , the model and the control of flexible manipulator are of great significance both in theory and in application 然而也正是由于连杆存在弹性变形和振动,使得柔性机械手成为一个高度非线性的、分布参数的、强耦合的无穷维多输入多输出系统, ,因此其建模和控制也具有重要的理论意义和应用前景。
Analysis is made on structure characteristics of the finned - tube , and analysis has been made on the special heat and mass transfer principle of every micro - unit under both dry and wet conditions . appropriate hypothesis is made and based on the energy , mass and momentum equivalent , the evaporator models of dynamic distributed parameters are set up . in addition , the gascooler and internal exchanger models of dynamic and distributed parameters , the throttling valve models and the compressor models are set up , too 本文的内容如下: 1对翅片管蒸发器的结构特点进行分析,选取适当的微元体,对于干、湿工况下每个微元分别进行传热传质分析,通过适当的假设,利用质量守恒方程、能量守恒方程和动量守恒方程建立了蒸发器的分布参数数学模型;对回热器划分微元建立了分布参数数学模型;对气体冷却器建立了分布参数数学模型;对压缩机建立了数学模型;建立了节流阀的数学模型,为系统仿真奠定了基础。
A study of combustion of the furnace in high - speed - wire factory of tangshan steel company is made , from which the conclusion is acquired , that is the process is a casual process of nonlinear and distributed parameter with big inertia , pure lag and casual disturbance . this makes prepare for further studies 研究了唐山钢铁公司高线厂的蓄热式加热炉的燃烧情况,得出了结论,即其过程为大惯性、纯滞后、受随机干扰的非线性分布参量过程,为后继的研究作了准备。
Based on a duralumin flexible beam with piezoelectric films attached , distributed parameter modal described by partial difference equations is builded , and then turned into a set of two order systems with the method of modal analyse . state feedback control and independent modal control is investigated . and simulation of the closed - loop system with thest two methods is performed in matlab 并用模态分析的方法,将系统的偏微分方程模型转化成了模态模型;研究了状态反馈和独立模态方法;进一步完善了软件界面以及软件功能;在实际系统中,应用状态反馈算法,有效抑制了悬臂梁在受到外界瞬时脉冲扰动和激振引起的一阶、二阶模态振动。