Research of Physical Characteristics and Equivalent Circuit Model for High-Gain Photodetector 高增益光电探测器物理特性和等效电路模型研究
The current education MAN system is mainly a three-layered structure based on the VPN technology; it is usually built on the rented physical circuit from the ISP as China Telecom. 现行的教育城域网的组建方式大多采取租用电信等营运商的物理线路,通过VPN技术,三层结构组网建设。
Hardware Design of Physical Characteristics Examination System for High-pressured Circuit Breaker 高压断路器机械特性检测系统硬件设计
Divided-into-segments liquid-level measuring instrument divides measuring range into different lays ( every lay corresponds to a fixed space height) using equal-structure physical electrodes, combines analog circuit technology, digital circuit technology and singlechip technology to detect capacitor lay by lay. 分段式液位测量是利用等结构物理电极把整个测量范围分成不同层面,每个层面对应着固定的空间高度,用模拟电路技术、数字电路技术及单片机技术相结合,逐层测量电容。
A physical model of open circuit system control considering the acoustic characteristic of rotating stall is set up to provide a theoretical basis for revealing the rotating stall machanism of the axial flow compressor and making a further active control on rotating stall. 建立了考虑旋转失速声学特性的开环系统控制的物理模型,对于揭示轴流压气机旋转失速机理以及进一步对旋转失速进行主动控制提供了理论基础。
The definition and physical model of the controlled source element applied in circuit analysing are described. 介绍了在电路分析中引进的受控电源元件的定义和物理模型。
It includes the constant current source ( CCS), power amplifiers, excitation coils, physical phantom, measurement-mode setting circuit, signal measuring block, DAC and digital I/ O card. 该系统包括恒流源、功率放大器、激励线圈、物理模型、测量模式设置模块、信号检测模块、数据采集和数字I/O卡。
A physical model of equivalent circuit has been built based on the electromagnetic field theory. 根据电磁场理论,提出电磁成型系统等效电路模型;
In this article, form the physical principle, the model and the equivalent circuit of thickness extensional vibration mode of thin film transformer is built. 本文从基本的物理学原理入手,建立了纵纵式厚度伸缩薄膜压电变压器的物理模型以及等效电路。
The ASIC Design of 10gbit/ s Ethernet Physical Coding Subsystem Circuit 万兆以太网物理层编解码电路的ASIC设计
The functions of the CP layer are intended to reduce calls for CS network by means of concentrator, to control dynamic change of circuit set on the basis of minimum circuit set and to multiplex each physical circuit by the application of PS technique. CP层的功能包括:用集中器功能减少对CS网的呼叫,在最小电路集合基础上控制电路集合的动态增减,采用分组交换方式复用每一条物理电路等。
In this paper, the design of physical dimension and magnetic circuit size was optimized to determine the most suitable structural parameters, based on the mathematic mode of damper and magnetic FEM method. 根据阻尼器的数学模型结合磁场有限元分析的方法对其几何尺寸和磁路尺寸进行优化设计,确定了一组最合理的结构参数;
Base on the physical model of three phase half wave controllable rectifying circuit and the on off condition of crystal thyratron, a set of differential equations is developed for the physical variables of rectifying circuit under different conditions. 在三相半波可控整流电路物理模型的基础上,根据晶闸管的导通条件,建立了在不同条件下整流电路中物理量所适应的常微分方程组。
In the paper, an arc model based on MHD is built according to the physical interrupting process of circuit breaker. 根据低压断路器开断时电弧的物理过程,建立了以磁流体动力学MHD为基础的电弧模型及以热击穿为主的背后击穿物理模型。
The paper studies the techniques of the recovery of wasted computer circuit board through physical and chemistry method, Wasted circuit boards are crashed by pulverizer. 本文用物理及化学方法研究了废旧电脑线路板的处理回收工艺。
Combining the equivalent circuit model with physical model, a large-signal nonlinear equivalent circuit model of SiC MESFET which is relevant to temperature is introduced in this thesis. From small-signal to large-signal step by step, the element parameters are extracted and simulated. 本文采用等效电路与物理模型相结合的方法,提出了SiCMESFET器件与温度相关的大信号非线性等效电路模型,一步步从小信号到大信号分析,完成了模型中组件参数的提取与拟合。
Unlike other test techniques for logic functions of IC's, I_ ( DDQ) test is used to detect physical defects and process defaults of the circuit. 与其它主要用于检测逻辑功能的测试技术不同,IDDQ主要用于检测电路的物理缺陷和工艺故障。
In order to realize accurate test to the circuit breaker, quickly obtain physical characteristics parameter of the circuit breaker, and provide the reliable performance parameter for the circuit breaker research and development, we have designed the circuit breaker physical characteristics automation detecting device. 为了实现断路器机械特性的准确测试,方便快捷地获得断路器机械特性参数,为断路器的研发与生产提供可靠的性能参数,我们设计了断路器机械特性的自动化检测装置。
Definitions and Physical Sense of Reactive Power in Non-sinusoidal Circuit 非正弦电路中无功功率的定义和物理意义
The paper proposes the mathematical model and physical circuit of feedforward compensation control for this purpose and gives an example of its parameter design. 研究了前馈补偿控制的数学模型和实施电路,并提供了参数设计实例。
: According to the features of elastic wave in metal and the physical properties of loose part impact in primary circuit in NPP, the physical model is established in frequency domain to describe the impact characters of loose parts. 结合固体内弹性波传播特性,并根据核电站一回路内松动件碰撞的物理机制,在频域内建立了描述松动件碰撞特性的物理模型。
In the P2P network, the node which the fixed physical circuit connects to pass messages directly, but each other non-neighboring nodes must go through intermediate nodes communication, the message before delivered to the destination node must pass through one or more intermediate nodes. 在P2P网络中,有固定物理线路连接的节点可以直接传递消息,而彼此非临近的节点则需经过中间节点通信,消息在传递到目的节点之前要经过一个或者多个中间节点。
Differential equation solver should be able to reflect the physical nature of the circuit analysis methods, but the initial value which difficult to determine become obstacles when it applications in power electronics. 而微分方程求解本应是最能体现物理本质的电路分析方法,但难以确定的初值成为其在电力电子分析应用中的阻碍。
In terms of hardware, it has been designed the hardware composition principle of architecture, the pulse input system and physical therapy output system as well as each module circuit of the core and expansion board. 在硬件设计方面,设计了系统硬件的组成原理架构,详细研究了理疗仪的脉象输入系统和理疗输出系统;开发了理疗仪核心板和扩展板上的各个模块电路。
Carry out a feasibility analysis about electric simulation of irrigation pipe network, compared with the physical properties of pipe network hydraulic circuit and the electrical physical properties. Corresponding hydraulic formula, electric simulation formula has been advanced. 对电模拟灌溉管网进行了可行性分析,将管网水力物理特性和电路和电学物理特性进行对比,提出了对应水力学公式的电模拟模型公式,针对不同流态输水管选取了不同的电器元件进行模拟。
The system concludes three parts: PC software, data acquisition system and physical experimental circuit based on the NI signal generator. 该系统包括上位机软件、数据采集系统和基于NI信号发生器的物理实验电路。
The whole new track and field class that mainly uses the physical training combines with circuit training can more easily extend the classes and then help the special physical, technical and tactical improvement. 东北财经大学采用以体能训练为主加之适宜循环训练法的全新田径课可以比较容易的渗透、延续到选项课中去,有助于专项身体素质、技战术提高。
Lastly, a detailed description of the inkjet printer control system hardware, PCB production and inkjet printer control system of the physical parts of the circuit debugging steps described in the debugging process encountered problems and solutions to these problems. 最后详细叙述了喷码机控制系统的硬件PCB实物制作和喷码机控制系统各部分电路的调试步骤,阐述了在调试过程中碰到的问题以及对这些问题的解决方法。
Then based on fundamental physical theory, the equivalent circuit models and their electrical parameters of a single CNT and CNT bundle are proposed and discussed, respectively. 接着基于基本的物理理论,给出了单根碳纳米管和碳纳米管束的等效电路及其等效参数的提取。
But the complex calculation and the changing process make the physical model be unsuitable for circuit simulation. 但由于计算过于复杂,而工艺又多变,使用物理模型处理电路模拟时,误差较大。