查询词典 similarity principle

In this article two functional modes of the Fly-back Converter (Continuous Conduct Mode and Discontinuous Conduct Mode) are particularly analyzed, which include their characteristics, applications, the critical pattern of two functional modes is argued, both the exact boundary from the angle of circuit parameters is crystallized, at the same time, basic principle of PFC under the DCM mode is introduced, which settle theoretical basis for the subsequent design; by establishing the mathematic model of the converter, a further investigation of the configuration is made, qualitatively and quantitatively, analyzed to settle exactly theoretical basis for the subsequent emulation and the experimental parameter; from the angle of steady-state analysis, the transfer function of the system is deduced to establish dynamic small-signal state equation, emulating the system with the help of matlab, then according to the simulation result and the theory of PFC revise the system, lastly, we adopt the project which add a zero-pole compensator to the voltage loop, by this way, a satisfied system performance is gained and the PFC scheme is ensured successfully; finally, based on the previously-done work, we combining with the situation of specific design requirement, acquired the numerical value of each unit devices in this converter

详细分析了反激式变换器的两种工作状态，连续模式(Continuous Conduct Mode ，简称CCM)和断续模式(Discontinuous Conduct Mode，简称DCM)以及各自的特点、应用场合，论证了两种工作状态的临界模式，从电路参数的角度明确了二者的界限，同时还介绍了DCM模式下PFC的基本原理，为后面的设计奠定理论基础；通过对整个变换器系统建立准确的数学模型，对此变换器的电路结构做了进一步的研究，定性、定量地分析了变换器各部分的工作状态，为仿真和实验参数的确定以及电路参数的优化提供理论依据；从稳态分析的角度，为系统建立了动态小信号状态方程并推导出系统的传递函数，利用matlab对系统进行仿真，进而根据仿真结果以及PFC的相关理论对系统进行校正，采用在电压环加入零点—极点补偿器的设计方案，得到了满意的系统特性并且保证了PFC的顺利实现；最后，在前面所做工作的基础上，结合设计要求计算出此变换器系统中每个元器件的数值，利用Pspice对其进行了仿真、优化，然后根据仿真结果搭建了硬件电路。

Acquaint with to pull-push, the fly-back convertor, the forwared convertor, whole bridge, half bridge work appearance and principle.

熟悉推挽，单端正激，反激，全桥，半桥工作状态与原理。对电磁兼容和干扰有丰富改善经验。

The principle of UC3842 was expounded, and the design of single-end flyback switching power was discussed.

首先阐述了UC3842的基本原理，在此基础上提出了单端反激开关电源的原理和设计方法。

Introduces the principle of the Flyback mode switching power supply.

本文详细论述了一款音响电源的研制，介绍了单端反激开关电源的基本原理。

On the basis of analysis to the working principle of R801, the flyweight's lift and the governor's movement model were constructed, and the effects of different profiles of limit cam on the governor's operating characteristic were discussed.

在深刻剖析了该调速器工作原理的基础上，建立了飞锤升程模型和机构运动模型，并讨论了限位凸轮的形状及其与调速器的装配关系对调速器调速特性的影响。

This article introduces the design and operation principle of 713.5～718MHzultrahigh frequency digital phaselock FM frequency synthesizer.

本文对7135～718MHz的超高频数字式锁相调频频率合成器的组成、设计原理进行了介绍。

The developing principle of MB gypsum fine foamer which takes compound honey-locust abietic acid anionic surfactant as principal composition,is analyzed in theory.

从理论上分析了以复合型皂角松香酸类阴离子表面活性剂为主要成分的MB石膏微发泡剂的研制原理，详细研究了MB微发泡剂在石膏料浆中的起泡条件、起泡性能及其对硬化后的建筑石膏物理力学性能的影响，MB微发泡剂与现有发泡剂的性能比较，MB微发泡剂在纸面石膏板中的应

To solve the difficulties of the discretization and application of fractional order controllers, evaluation strategies of digital realization of FOC are investigated. The realization principle and process of various discretization methods are discussed.

针对分数阶控制器数值计算和应用难的问题，提出了分数阶微积分算子数字实现方法的评估策略，分析了分数阶微积分算子的多种数值计算法的机理和实现步骤。

Using digital signal processor, TMS320F240, which is special for motor control, we develop a suit of speed adjustable, reliable and highly effective induction drive based on FOC principle.

文中对整个系统的硬件电路和驱动软件的实现都作了详细的介绍，同时采用了一种新型的PWM调制方法一电压空间矢量法来实现对异步电机的控制，提高了能量的利用效率。

A system for locating the focal plane position of aerial cameras is designed, and the working principle, hardware components and software design of the system are described.

提出了一种定位航空相机焦面位置的系统，论述了系统的工作原理、硬件组成和软件设计。

Methods Clinical data of 3 cases of bile duct injury during laparoscopic cholecystectomy were analyzed retrospectively.

回顾总结3例LC术中胆管损伤的临床资料，分析3例胆管损伤的原因及对策。

These techniques are applied to the gobang.

本文将这些技术用于五子棋中。