损耗

The raise of power electronic device's switching frequency brings on a series of problems such as switching loss, component wastage, inductive turn off and electromagnetic interference etc.

电力电子装置开关频率的提高带来了开关损耗与器件损坏问题、感性关断和电磁干扰等一系列新问题。

For this reason, an optimal automatic timing control algorithm is proposed, that can restrain the switching frequency in a certain range to achieve the purpose of high efficiency and energy conservation. Taking such factors as inductive reactance at AC side, switching frequency, harmonic distortion rate and switching loss as well as the interaction among them into consideration, the formulas for inductive reactance and switching frequency are given; then by use of digital signal processor TMS320F2812, a prototype based on the proposed algorithm is implemented, and using this prototype the effectiveness and practicality of the proposed method are verified by experimental research and simulation.

文章提出了自动定时控制的优化算法，将开关频率限定在一定范围内，以达到高效节能的目的；综合考虑交流侧感抗、开关频率、谐波畸变率和开关损耗等指标，提出了主电路电感参数和开关频率的选择公式，并采用TMS320F2812数字信号处理器构造了试验样机，进行仿真和试验研究，其结果证明了该方法的有效性和实用性。

In order to induce the inductor model, the loss mechanics of spiral inductor are analyzed.

为了完成平面螺旋电感的建模，分析了平面螺旋电感的多种损耗机制。

Two-elements doping and the thickness of film also inflect the absorption of films for light.

5测量了样品电容Cp、损耗因子D和复阻抗随频率f的变化。

Infra-red curing: A method of accelerating the drying of printing ink by intensive exposure to infra-red radiation .

有一种连续不断的能流供给光球，以弥补辐射造成的巨大损耗。

Inhibit interference from the point of view, the insertion loss is the most important indicators.

从抑制干扰的角度考虑，插入损耗是最重要的指标。

The effects of loss factor, excited point location and boundary conditions on the input vibrational power flow have been studied.

分析了梁结构在外力激励时的输入功率流和传递功率流，重点讨论了损耗因子、外力激励位置和梁边界条件对输入功率流的影响，分析了梁跨距和梁跨数对多跨梁结构的传递功率流的影响，并比较分析了有限周期梁结构和无限周期梁结构的功率流特性。

The input power flow into the system, the loss one of the system and the transfer one between the two oscillators were studied.

通过改变耦合阻尼的大小，分析了系统输入功率、系统内损耗和模态间传递功率流的变化规律。

This paper discusses common model Insert Loss and differential mode IL of electromagnetic interference filters of switching mode power supply,and studies theoretical analysis and measure is gained,various reasons of effect IL are analysed and its improvement methods is got.

研究了电磁干扰滤波器的共模和差模插入损耗，并进行理论分析和测量；分析了影响IL的各种原因及改进方法。

Therefore, in actual use conditions, the filter insertion loss will be reduced.

因此在实际使用条件下，滤波器的插入损耗会有所降低。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。