电路

Memory circuit, dynamic and static ram circuit module

存储器电路，动态及静态随机存取存储器电路模块

The main content of this thesis is as follows: 1The structures of EPS are analyzed. The main components of EPS are introduced in detail. Then the distributed torque in EPS is analyzed and the control system model is set up. 2Three control modes are discussed and the control strategy of EPS is studied in detail. Three principal modules in the control strategy are discussed—the predicted module which predicts motor rotational speed and steering rotational speed, the power-assistant module and the return control module. 3The assistant torque curves of the motor are designed by using the B-spline, so that any kind of custom-built assistant torque curves can be designed according to different kinds of automobiles. 4The hardware frame of EPS is studied. The developed controller based on 8-bit MCU MC68HC908MR8 is introduced and many related circuit units are designed, including the control circuit, the driver control circuit and so on. The software structure is discussed, then the steering control program flowchart is given.

本文的主要工作有： 1分析了EPS 的总体构成，对EPS 的各个部件作了详细的介绍，并在此基础上分析了EPS 的受力情况，建立了控制系统模型，并研究了EPS 的安全性能； 2讨论了EPS 的三种控制方式，提出了控制策略，并讨论了其中三个关键模块的作用：预估模块包括对电机转速和方向盘角速度的预估，助力控制模块以及回正模块； 3用B 样条插值方法进行EPS 助力曲线的设计，可按照用户的要求设计任意形状的助力曲线，以满足不同车型和不同用户的要求； 4研究了控制系统的硬件结构，以MC68HC908MR8 为核心设计了控制器，详细讨论了控制器的控制电路、驱动电路等；设计了控制系统的软件，给出了控制程序流程图，并对要点进行了详细的说明。

The basic principle and circuit topology of DC side series APF are analyzed; the corresponding control equations are derived; the criteria for the design and selection of principal parameters for main circuit, i.e., the filter inductor and energy storage capacitor, are given to provide theoretical basis for rational design of DC side series APF.

文中对直流侧串联型APF的电路拓扑和基本原理进行了分析，推导了相应的控制实现方程，给出了主电路主要参数的设计和选取标准，为系统的合理设计提供了理论依据。

The influence of stray capacitance and its change on the C/V circuit is discussed, and it can be concluded that the influence of stray capacitance and its change is very little comparing to that of the excitation signal.

分析了非理想条件下，杂散电容及其变化对C/V转换电路输出的影响，并得出一点结论：相对于激励信号对C/V转换电路输出影响来说，杂散电容及其变化的影响较小，几乎可以忽略不计。

Based on theory of strobe imaging the EL6249C is used to design a set of strobe driving circuit to drive high light LED to generate strobe light for MEMS dynamic test.

文中根据频闪成像原理，利用EL6249C设计了一套频闪驱动电路，该驱动电路可驱动高亮LED ，以产生MEMS动态测试中所需的频闪光，为后续MEMS器件的动态特性提取和分析做准备。

After the circuit is abstracted as a directed graph, circuits matching problem is solved by subgraph isomorphism algorithm.

将电路抽象成有向图的数学模型后，采用了子图同构算法实现电路匹配。

The theory of subharmonic sampling PLL is elaborately analyzed and loop parameter calculation formulae are introduced, and then the design rule is obtained in order to reach the best noise performance.

2Ku波段电调谐介质稳频振荡器的设计，通过计算机软件对振荡电路及其相位噪声性能进行了详细的分析，优化设计了反射型DRO电路并进行了测试。

In the digital control module of the circuit, design the successive approximation logic which based on the ring counter/shift register.

在数字控制模块的电路实现中，用基于环形计数器和移位寄存器的结构设计了逐次逼近逻辑电路。

The difference amplifier is the complement of the summing amplifier and allows the subtraction of two voltages or, as a special case, the cancellation of a signal common to the two inputs.

差分放大器是对求和电路的发展，这种电路可以减小甚至去处两个输入信号中的共模成分。

Our company is a waste recovery and sale of the world brand new and second-hand professional electronic components and electronic equipment suppliers, including the public, industrial grade, microprocessor, microcontroller, memory, linear circuits, logic circuits , power modules, connectors, NI-GBIP card, ICT switch plate, AC \ DC power supply, screen generators, and various specifications oscilloscope, spectrum analyzer, such as high-tech products covering electronic communications, instrumentation, aerospace , medical equipment and other industries we adhering to the "sincere cooperation, mutual good faith" concept, with good product quality and after-sales service, competitive price advantage, as well as the quick and timely delivery cycle, the enthusiasm for the vast number of clients to provide comprehensive quality supporting services.

我公司是一家经营回收兼销售世界全新和二手品牌的专业电子元器件和电子仪器的供应商，提供包括民、工业级、的微处理器、微控制器、存储器、线性电路、逻辑电路、电源模块、接插件、NI-GBIP卡，ICT开关板，AC\DC电源，视屏产生器和各种规格的示波器，频谱分析仪等高新技术产品，覆盖电子通讯、仪器仪表、航空航天、医疗设备等行业我们秉承"精诚合作、诚信互惠"的理念，凭借良好的产品质量和售后服务，有竞争力的价格优势，以及快捷、及时的交货周期，热情为广大客户提供全面优质的配套服务。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了