查询词典 flyback retrace

The operation of RCD clamped flyback converter based on peak current control are presented,and the design criterion of the key parameters such as RCD clamp circuit is proposed.

本文论述了峰值电流控制RCD箝位反激变换器的原理，并首次提出了RCD箝位等关键电路参数设计准则。

The influence of the leakage inductance of transformer on flyback converter and power device is great, which can be suppressed by RCD clamp method. However, the parameters of RCD clamp are usually achieved by the designers' experience.

反激式电源变压器的原边漏感对电路性能及其功率器件影响很大，通过RCD钳位电路可以很好地抑制由于漏感而产生的电压过冲，但钳位电路参数设计往往是通过经验获得，设计方法不是很明确。

Ten flyback flaps sized 3 cm×1.5 cm each was designed at the corpus' finger back with the pedicles at the distal end of fingers.The color changes of the flaps were macroscopically observed after the mixture of diatrizoate and Indian ink were infused into radical artery with pressure and the visualization of the blood vessels inside the flaps were observed radiologically.

在尸体手指背侧设计10个逆行皮瓣，蒂部在手指远端的一侧，皮瓣范围3 cm×1.5 cm，将泛影葡胺加墨汁加压注入桡动脉，肉眼观察皮瓣的颜色变化，X线造像观察皮瓣内血管显影情况。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。