和电路

We present some new topologies of components and devices, embedded passive circuits and interconnections with good EM properties which can meet development of microwave and millimeter wave LTCC technology and domestic state of arts and crafts inland. These algorithms are applied to optimization of LTCC circuits by using relevant production and applicable techniques in SM study, i.e. optimizing and designing various LTCC capacitors and inductances by original space mapping, LTCC transitions by aggressive space mapping and equivalent lumped-element LTCC filters by knowledge-based aggressive space mapping and neural space mapping.

并且针对微波、毫米波LTCC技术发展需要和国内加工水平，探索具有良好电磁特性的新型组件拓扑结构及其内嵌无源电路、互连实现形式，利用在空间映射研究中取得的成果和开发的实用技术，实现LTCC电路的优化，主要是采用初始空间映射方法优化设计了LTCC电容电感、采用主动空间映射方法LTCC过渡、采用基于知识主动空间映射方法与神经网络空间映射方法优化设计了LTCC等效集总元件滤波器等。

Analysis for testability is widely used in DFT and test pattern generation, but most testability analysis algorithms have the shortcoming of either inaccuracy or being too complicated. A new method to calculate the signal probabilities of the nodes in IC is pre-sented in Chapter 7 of this dissertation. The signal probabilities by our method is more exact than by the previous ones. A symbol of the signal probability at the fan-out node is created and is propagated to the RFON (Reconvergent Fan-out Nodes). At the RFON, the expression containing the symbol is simplified using the rule which corresponds to the law of identity in Boolean algebra. After the expression is simplified, the symbol is substituted with its numeric value. Theoretical analysis shows that this method is concise and has a low computing complexity.

可测试性分析在可测试性设计和测试生成中都有着广泛的应用，然而大部分的可测性分析方法都存在不精确或者过于复杂的毛病，在第七章中作者提出了一种新的计算IC电路节点的信号概率值的符号算法，该算法得出的信号概率值比用以往的算法法得出的要更准确，也更简洁，针对电路中的扇出节点重汇聚现象，我们在每一个扇出节点定义了一个信号概率的符号，在以后的计算中一直使用该符号参与计算，直到该符号传播至重汇聚处，利用一定的规则把含符号的表达式化简，再将符号的真实值代入，在计算符号概率的过程中定义了一个和布尔代数中的同一律相对应的运算规则，通过该运算规则，使得信号概率的结果更加准确，符号算法具有简洁方便，计算复杂度小的特点 4。

Students have to study how to efficiently use the tools for performance measurement on basic circuits through observation.(3) The un-ideal performance of circuits such as frequency response and noise.(4) Feedback, Operational amplifier and the stability in feedback system.

通过观察对基本电路性能的量化建立有效的分析工具(3)频率响应和噪声等电路的非理想性的介绍(4)反馈，运放和反馈系统中的稳定性。

Then we present the hardware design of RS(255,247) encoding and decoding, including the multiplier in Galois field, the circuit for solving syndromes matrix, the circuit of Berlekamp arithmetic and so on. The use of streamline technology in the design of FPGA improved the efficiency of encode and decode system greatly.

接下来讨论了RS(255，247)编码过程和解码过程的硬件设计，包括伽罗瓦域内的乘法器设计，伴随式求解电路，Berlekamp算法电路等，在FPGA的设计过程中充分使用流水线技术，使整个编码和译码系统的效率有很大的提升。

Simultaneously the model of bipolar junction transistor and CMOS transistor and the basic circuit units such as current mirrors are briefly introduced; with the topology and model circuit ,the principle and feature of the CC are analyzed. The applications of the CC in the fields of the active network and signal process are synthesized.

首先介绍了模拟集成电路在当代社会中的重要性和集成电路研究的必要性，并简要地介绍了双极型晶体管和CMOS晶体管的模型结构以及几种电流镜电路的原理及性能；从电流传送器的拓扑结构入手，在给出其模型电路的基础上，介绍了电流传送器的工作原理。

Chapter three (the methods of generating chaotic signal and its applications): In this chapter firstly the mechanism that a simple kinetic system, subsection linear map system, can generate chaotic phenomena is affirmed, the characteristics of correlation function of the chaotic signal generated by this system are simulated, on this basis a simple applicable method for generating chaotic signal is given; secondly some typical circuits generating chaotic signal are designed, also use operational amplifier to design a third -order autonomous circuit with chaotic dynamics. The basic mechanism and typical structures of chaos in the application of communication are introduced systematically and a simple method is provided for generating pseudo random code signal; At last Chaotic signal is applied into the analysis of system characteristic.

第三章(混沌信号产生方法及其应用)首先针对一类简单动力学系统——分段线性映射系统能够产生混沌现象的机理及由该系统所产生的混沌信号的自协方差函数特点进行了证明和计算机仿真，提出了软件产生混沌信号的一种实用方法；其次分析讨论了几种能够产生混沌信号的典型混沌电路，提出了用运算放大器与阻容元件实现三阶自治混沌电路的基本原理；概述了混沌在通信领域中应用的基本原理和典型结构，提出了产生伪随机码信号的一种简单方法；最后将混沌信号用于系统的特性分析中。

Aiming at the limitations currently existing in controlling mine excavator with magnetic triggers,such as slow dynamic response of system,poor dynamic index and excavator characteristics,as well as complicated structure,etc.,the strategy of double closed-loop excitation electric adjustment,i.e.current inner loop and voltage outer loop,is adopted to design an advanced electronic integrated control system for mine excavator.

目前矿用电铲常见的是采用磁性触发器进行控制，存在系统动态响应慢、动态指标欠佳、电铲特性不理想、结构复杂等缺陷，采用电流内环和电压外环的双闭环励磁电调方案，设计了一种先进的电子集成电铲电控系统，详细介绍了系统电路结构，尤其是电压、电流调节器及其反馈电路与特性适配电路的基本原理和功能特点。

The hardware design of it mainly includes circuit of radio reception、signal sampling circuit、the CPU control unit ,man-machine conversation and communication interface;The software design contains data sampling module ,analysis and processing module,keyboard and display program module and so on.

监测记录仪的硬件设计主要包括收音电路、采集电路、CPU控制单元、人机接口单元和通信接口；软件的设计包含数据采集、分析处理、远程通信和键盘显示等程序模块。

This text explain computer control down case systematic operation principle and hardware software, etc. some designs automatically mainly, Hardware part include choice in one-chip computer among them, to procedure choice of memory, Switch amount interface, photoelectricity segregation and drive of coupling, urge design and design of the control circuit of circuit; Software part tell systematic design of keyboard this mainly.

本文主要阐述了，微机控制自动装箱系统的工作原理和硬件软件等部分的设计方案，其中硬件部分包括了对单片机的选择，对程序存储器的选择，开关量接口，光电耦合的隔离和驱动，驱动电路的设计以及控制电路的设计；软件部分的主要讲述了本系统键盘的设计。

Some designs automatically mainly, Hardware part include choice in one-chip computer among them, to procedure choice of memory, Switch amount interface, photoelectricity segregation and drive of coupling, urge design and design of the control circuit of circuit; Software part tell systematic design of keyboard this mainly.

自动化-本文主要阐述了，微机控制自动装箱系统的工作原理和硬件软件等部分的设计方案，其中硬件部分包括了对单片机的选择，对程序存储器的选择，开关量接口，光电耦合的隔离和驱动，驱动电路的设计以及控制电路的设计；软件部分的主要讲述了本系统键盘的设计。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐