和电路

Log-domain companding technique takes advantage of the exponential I/V characteristics of the active devices such as bipolar junction transistors, compressing the dynamic range of the input sigal and reducing internal voltage amplitudes, it can maintain large dynamic range and high operating frequency under low supply voltage , the main area of application for this technique is the implementation of continuous-time fully integrated filters with low voltage, wide dynamic range, high-frequency, and wide tenability.

对数域压扩技术利用BJT晶体管等有源器件的指数Ⅰ-Ⅴ特性，对信号作对数压缩处理，大大降低了电路内部节点电压的摆幅，能在低电源电压下保持大信号动态范围和高工作频率，该技术的主要应用是设计具有低电压、宽调谐范围、高工作频率和宽动态范围特性的连续时间全集成滤波器——对数域滤波器。

This article introduces the structures of the electrocircuit and the light route the elimination methods of the common malfunctions about halogen tungsten lamp projector.

介绍了卤钨灯投影仪的电路和光路系统的结构和常见故障的排除方法。

In SoftSwitch structure , SIGTRAN is used in Signal Gateway and Media Gateway Controller to transmit traditional telephone signal between them, such as NO.7, ISUP, TUP, DSS1 and so on; and IETF has defined correlative user adapter layers to transmit them in IP network, such as IUA/M3UA/M2UA/M2PA/SUA and so on.

在软交换中，SIGTRAN协议栈主要用于在信令网关和媒体网关控制器间传输传统的电路信令，如SS7，ISUP，TUP和DSS1等，SIGTRAN协议定义了相应的适配层协议来完成信令的适配，以便于在IP网络传输，如IUA/M3UA/M2UA/M2PA/SUA等多种协议。

A compact-size coplanar waveguide lowpass filter is designed, simulated, fabricated and measured. The purpose of this thesis is to investigate the performance of miniaturized CPW lowpass filter which is a fifth-order semi-lumped uniplanar Butterworth filter. Our design utilizes transmission line lumped elements consisting of interdigital capacitors and meander line inductors.

本文研究目的是探讨微小化共面波导滤波器设计、模拟、制作与其量测特性，滤波器设计是使用Meander和Interdigital线路结构，其电路特性可等效为电感性与电容性元件，藉由串联Meander和Interdigital线路实现慢波周期结构，Interdigital结构设计的线宽为5μm。

The FES circuit has a bandwidth of more than 10kHz and a gain which is variable from 20dB to 60dB.

该电路可以适用于Cu ff电极和Shaft电极，可以对中枢神经和周围神经实施不同相位的刺激。

This paper analyses the communication mechanism between keyboard controller and keyboard in detail,proposes a design structure for keyboard controller,and improves the reusability and verifiability through optimizing part of the circuit.

本文详细分析了键盘系统的工作机制，给出了一种键盘控制器的设计结构和控制时序，通过优化某些具体电路增加设计的可重用性和可验证性。

The operating principle and control scheme are analyzed in detail, and verified by the simulation and experiment results.

详细分析了电路的工作原理和控制策略，并给出了仿真和实验结果。

A logic zero input on ENx or logic high on ENx restores bias to the drive and control circuits and turns the power on.

一个逻辑零的ENX或逻辑上的ENX偏倚的高度还原的驱动和控制电路的输入和开关电源。

And an on-line adaptative training algorithm of the weights of neuron is given, which enhances fusion precision of the model, fault tolerance and adaptive ability for subsystems 4 In order to diagnose the soft fault of integrated system, a new fault detection method is proposed based on federated filter, which can detect fault of system in short interval and greatly enhance the method sensitivity to fault A fault diagnosis method of Dynamically Tuned Gyro baesd on parameter estimation of kinetics model of rotor, and signal pretreatment, parameter estimation and strategy of fault identification are studied in detail The method can locate fault of DTG correctly and effectively, which provides a new approach and idea for gyro fault diagonsis 5 In order to diagnose the hard fault of integrated system, fault tree analysis is studied on fault disgnosis of integrated system circuits, and the hardware and software of disgnosis system are developed, with faults located to main module and circuit For futhur diagnosis, an optimal measurement technology in detection of circuits is discussed by improving an algorithm based on information theory, and a pratical method based on half-split method is proposed.

针对组合系统的软故障诊断问题，提出了基于联合滤波模型的一种新的故障检测算法，给出了算法的理论推导过程，该算法能在较短的时间内检测出系统故障，提高了算法对故障的敏感度；研究了基于动调陀螺转子动力学模型参数辨识的故障诊断方法，就其中的信号预处理、参数辨识及故障决策方法等关键技术进行了详细的研究，该方法可以正确、有效地检测与定位动调陀螺故障，为陀螺故障诊断提供了新的途径和思路。 5。针对组合系统的硬故障诊断问题，研究了基于系统浅知识推理的故障树法在组合系统电路子系统故障诊断中的应用，开发了相关诊断系统的软硬件，故障可定位到系统的主要功能模块和电路板级。为了进一步的故障定位，研究了电路板故障的最优检测问题，完善了基于信息理论的优化算法，并提出了基于&对分法&的一种实用的优化算法，故障可定位到电路板的主要功能元件级。在组建的SINS/GPS组合系统实验平台上，针对上述研究内容，进行了大量的实验研究。

The semaphore source of electrocardiogram is in the performance of high resistance, small breadth and low frequency, due to which the heart electricity should be dealt with amplificatory circuit、low-pass filter and band-elimination filter which are correlated to.

心电信号具有阻抗高、幅度小和频率低等特点，针对这些特点，采集的心电信号通过放大电路、低通滤波器和带阻滤波器等相关处理。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。