查询词典 buck

Switching modulation system, nonideal Buck, modeling, simulation, test

开关调节系统；非理想Buck；建模；仿真；测试

It proposes the control-output transfer function of the nondeal Buck converter using circuit average method, the model in Pspice 10.0, the open-loop and gain of the voltage control loop simulations of the system. A prototype of output power 15W has been made up, and the experimental results are agreed with the simulative results.

用电路平均建模法推导出非理想Buck变换器控制-输出的传递函数，在PSpice10.0环境下建立了仿真模型，对系统进行了开环和电压控制环路增益仿真，并在研制的15W实验样机上进行了系统的实验测试。

In the 1930s, the popularity of Pearl Buck's novels, especially The Good Earth, as well as growing American sympathy for China in its struggles with Japanese Imperialism, opened up opportunities for more positive Chinese roles in U.S.

在20世纪30年代，Pearl Buck的小说风靡一时，特别是《大地》，而且当时美国人很同情正与日本帝国主义进行抗争的中国，这也给她在美国电影中扮演正面的中国人角色提供了很多机会。

By comparing the two translated versions of Shuihuzhuan by Sidney Shapiro and Pearl S Buck, the author, from the angle of culture, tries to analyze the deep cultural connotations contained in the original work, the translation skills used, and the losses in translation, and suggests some possible compensation methods.

本文作者通过对《水浒传》的两个译本进行比较，试图从文化的角度对原作中包含着很深文化含义的绰号进行分析，并从翻译技巧和翻译效果的角度分析Sidney Shapiro和Pearl S Buck在翻译中造成的文化缺失，然后试图探索更好的翻译技巧予以补偿。

Simulation results show that the chaotic system can be controlled effectively in Buck power converter by this method. The method is still effective when there are parameter perturbation and noise.

数值仿真结果表明：该方法能有效地实现Buck功率变换器混沌系统的控制，系统在参数发生摄动和存在噪声的情况下，控制仍然有效。

A class of piecewise smooth maps with two border and three zones is derived to describe the dynamics of a current-programmed Buck converter operating in a discontinuous mode.

本文以不连续导通模式下的电流反馈型Buck变换器为例，推导出两个边界三段形式的分段光滑系统的离散映射模型。

The principle of the snubber applied to CCM Buck circuit is analyzed.

以CCM Buck电路为例，对该ZVS关断电路进行了详细的理论分析。

"It was my big hope that people would get right away and at least put a thumbtack on the map as far as our location,\\\" Buck said.

"我最大的愿望是希望人们能够立即收到，哪怕在我们所处地方的地图上钉一枚图钉也好。" buck 说。

The paper reviews the phylogeny of the LCD, describes the recent development situation of LCD-TV and several authority investigation institution do its prospective forcast. The research of the switching power supply, future development t rend is given in the paper. Outlines of LCD-TV technology, introduce the sort of topological structure. The BUCK type converter topological structure and the systematical basictheory were put emphasis on; the PFC, the reasons of power factor simply and the core of L6562 were analyzed, emphatically on the application circuit of this core, and account the design parameter of the application circuit. The sort and control mode of PWM, the control core of UC3846 and OB2262 were explained, the application circuit of this core were specific analyzed, practice picture in the real circuit uses oscilloscope were educed and contrastive analysis in this research.

本文回顾了LCD的发展史，介绍了LCD-TV发展的近况和一些权威调查机构对其未来的预测；对开关电源的研究概况和它的发展趋势作了总结；总体介绍了LCD-TV电源的结构及工作原理、拓扑结构的分类，着重研究了BUCK型变换器的拓扑结构及工作原理；对PFC作了综述，研究了功率因数降低的原因，重点介绍了L6562芯片，对此芯片的应用电路作了具体分析，并对芯片外围的设计参数作了分析研究；研究了PWM的分类和控制模式，对控制芯片UC3846和OB2262分别进行了重点说明，详细研究了基于UC3846的PWM设计，用示波器对其实际电路进行了抓图，并对比分析实际波形。

In order to control the AC with the chopping method, MOSFET is used to design a pair of two-way electronic switch and an AC Buck-Boost circuit is formed.

采用MOSFET构成一对双向导电型电力电子开关，对交流电进行斩波控制，形成交流Buck-Boost电路。

So that more consumers can enjoy more delicious quality, technology is even better than wine.

让更多的消费者可以品尝到品质更为鲜美，工艺更为精湛的葡萄酒。

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