查询词典 buffer circuit

Detailly,signals of background magnetic field is filtered by fixed frequency of sample and hold circuit which is supplied by logic circuit,and the signals before objects appear are tracked dynamically which are then compared with the ones after objects appear by comparator circuit,in order to furthest obtain the signals of target magnetic field on the basis of background magnetic field compensation.

运用逻辑脉冲电路为采样保持电路提供固定频率滤除背景磁场信号，并对目标未出现时的信号进行动态跟踪，运用比较电路将目标出现前后的信号进行比较，从而在补偿背景磁场的基础上最大限度地获得目标磁场的信号。

This article expatiated on the structure and principle of coreless transformer in printed circuit board, introduced and analysed the Hurly_duffy's method to calculate the self and mutual inductance of coreless transformer in printed circuit board in which I found the fault, re-modified the current unit model, deduced a new formula used commonly, and offered testing process and circuit as well as mended the structure of coreless transformer which made the analysis easy.

本文阐述了无芯印制板变压器的基本结构和原理，介绍和分析了Hurly-duffy 的无芯印制板变压器自感和互感的计算方法，指出了它的不足，在纽曼公式的基础上，重新修正了电流元模型，将线圈看作是粗线圈，推导出普遍适用的计算公式，并给出了测试方法和测试电路。

According to the start-up problem,the two soft start-up circuit structure and theory are introduced in detail in the paper,such as self-excitation soft start-up circuit and based on CD4046 soft start-up circuit.

针对中频电源启动问题，介绍了两种软启动电路——自激软启动电路和基于CD4046的软启动电路的构成和原理。

We further perfected hardware interface designs such as system main controlling circuit, signal measuring circuit and control box. Also, we have simplified system circuit and improved precision of adding water and controlling, simplifying operation and maintenance of system and increasing possibility of mass production.

进一步完善系统主控电路和信号测量电路以及控制箱的改造等硬件接口设计，精简系统电路布局结构，提高系统的加水控制精度和操作的方便性，同时提高了系统的可维护性、批量生产的可能性。

In this paper, the design of a simple, low-cost walkie-talkie circuit and main circuit of the key components of the circuit is introduced

本文设计了一种简易、低成本的对讲机电路，对关键电路及主要的电路元件做了介绍。

The IGBT-controlled chopper circuit can be greatly simplified as the smoothing inductor and commutation circuit of the thyristor-controlled chopper circuit are no more required.

文中提出了以IGBT、二极管、电阻和电解电容等四个元器件组成的斩波电路，经实验和仿真证明不仅能有效地调节转子电阻，而且同时兼有IGBT关断吸收电路的作用，能显著改善IGBT的关断轨迹。

What's more, the typical application circuit of UC3843 has been simplified , especially the feedback, compensation circuit and the snubber circuit.

此外，还对UC3843典型运用电路进行了简化修改，特别是反馈补偿电路以及吸收回路。

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。

Trigger circuit by adjusting the phase of the trigger pulse to control the on-off thyristor, which can be manually controlled to adjust the output voltage, and then, after step-down transformer can be used to obtain the magnetization of the magnetic low-voltage high-current power supply, mainly by the SCR the main voltage regulator circuit, trigger circuit, such as composition, is a broad application prospect of the exchange regulator controller.

通过调节触发电路的触发脉冲的相位来控制晶闸管的通断，从而控制输出得到可人工调整的电压，再经过降压变压器得到可用于磁化的低压大电流磁化电源，它主要由可控硅调压主电路、触发电路等组成，是一种具有广阔应用前景的交流调压控制器。

And then, the contiunous current modeof this circuit is discussed, and the PWM circuit and over-current -protection circuit are designed. At the same time, the calculation methods of storage inductance, output capacitor and sampling resistor are given.

讨论电路的电流连续工作模式，设计了电源的脉宽调制电路和过流保护电路，并给出了蓄能电感、输出电容和输出电压取样电阻的确定方法。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。