调波

The foundation of this system provides a good reference to promote the standardization and intelligence of the overhaul and maintenance of vacuum switches. This paper develops a special HF pulse power supply for internal pressure estimation, which achieves the output of HF-HV sinusoidal pulse wave whose frequency and amplitude can be modified respectively, and meets the design requirements according to the results of Simulink simulation and practical experiments. With the help of AT89S52, this paper designs an I~2C serial bus based signal detection system for peak value signal acquisition of HF pulse currents, which communicates with the upper computer by asynchronous serial communication for uploading the data. In the upper computer, a human computer interface is developed by Matlab software, whose functions are to do some computation and graphic display, such as calibrating the relation curve of vacuum degree and peak value of HF pulse currents, vacuum degree computation, and vacuum lifetime evaluation analysis basing on grey forecasting model as well as making relative suggestions.

本文研制了用于真空度检测的高频脉冲电源，通过Simulink仿真和试验检验其满足设计要求，实现了电压幅值和频率独立可调的正弦波高频高压脉冲输出；利用以AT89S52为核心基于I~2C串行总线的信号检测系统实现高频脉冲电流峰值信号的采集，通过异步串行通信实现单片机与计算机之间的数据通信，将检测数据传至上位机；在上位机利用Matlab开发人机交互界面，实现相关数据处理和图形显示，包括真空度——高频脉冲电流峰值关系曲线标定、真空度数值计算、基于灰色预测模型的真空寿命评估分析和提出相应决策建议。

The "Fantasia in F Minor," the "Barcarolle," the "Polonaise Fantasia,""Ballade in A Flat Major,""Ballade in F Minor," and "Sonata in B Minor" were all products of the relaxed time Chopin enjoyed in the country.

F小调幻想曲》，《威尼斯船歌》，《幻想波罗涅滋舞曲》，《降A大调叙事曲》，《F小调叙事曲》，《B小调奏鸣曲》等都是在南部疗养时创作的。

The "Fantasia in F Minor," the "Barcarolle," the "Polonaise Fantasia,""Ballade in A Flat Major,""Ballade in F Minor,""Sonata in B Minor" were all products of the relaxed time Chopin enjoyed in the country.

F小调幻想曲》，《威尼斯船歌》，《幻想波罗涅滋舞曲》，《降A大调叙事曲》，《F小调叙事曲》，《B小调奏鸣曲》等都是在南部疗养时创作的。

This topic returns in view of the cut type switch spreads the type switch "to return for the predecessor design spreads the type electric power switch utilization in the LED lamps and lanterns" is the research direction, to achieve take reduces the power loss to replace the tradition operational amplifier pulse wave width accent as the goal using IC UC3842 changes part, the actuation returns spreads the type electric power switch's switch of Power MOSFET, so as to controls instead spreads the type electric power switch breakover closure's time then control voltage output size, achieves the output voltage to the load LED lamps and lanterns adjusts the LED lamps and lanterns brightness the goal.

各位大大抱歉~！因为英文底子不好！希望大家帮忙翻译一下，希望不要用翻译软体翻的最好是自己翻！拜托了！本专题针对切换式转换器的返驰式转换器为前身设计「返驰式电力转换器运用在LED灯具」为研究方向，为达到以减少功率损失为目的利用IC UC3842代替传统运算放大器脉波宽度调变部分，驱动返驰式电力转换器的Power MOSFET之开关，藉以控制反驰式电力转换器导通截止的时间进而控制电压输出的大小，输出电压至负载LED灯具达成调节LED灯具亮度的目的。

Take advantage of the high-speed calculation capability of DSP. Without any additional speed-measuring circuit,calculating the running speed.,then modulating PWM can be easily made to control the speed of the motor.

充分利用DSP高速的运算能力，在不需要另加测速电路的情况下，软件计算电机的在转速度，然后根据在转速度，调节PWM波的占空比，很方便实现电机的调速，达到电机无传感器的控制。

Among those mentioned often are in-house perfumers like Jean-Claude Ellena at Hermes, creator of Kelly Caleche, and Jacques Polge at Chanel, who created Coco Mademoiselle.

常提到的名字多半是名牌自家专属的调香师，像是爱马仕的尚─克劳帝。艾雷纳，他创造了「凯莉驿马车」，及香奈儿的贾克。波巨，他创造了香奈儿摩登CoCo香水。

Tapping into his vast collection of jazz melodies and pop standards on "Johnny Mercer: The Dream's On Me", are Ella Fitzgerald on "Midnight Sun", Ray Charles singing "Blues In The Night", Chet Baker with "I'm Old Fashioned", and Mercer himself alongside Bobby Darin singing "Two Of A Kind".

听听"约翰尼·莫瑟：我的梦想"里面大量的爵士乐和流行乐，其中有艾拉·菲茨戈尔德的"午夜阳光"，雷·查尔斯唱的"午夜的蓝调"，切特·贝克的"我是老顽固"，还有默瑟和波比·达林合唱的"两个同类人"。

The digital part contains space vector pulse width modulation, simple center computer processor, proportional-integral controller and descend frequency decimator.

整体架构大致可分为数位和类比电路二大部份，数位部份可分为：空间向量脉波宽度调变器、简易中央电脑处理器、比例积分控制器、降频滤波器。

Keywords: Multiscales analysis,Marr edge detection operator,Wavelet decomposition,Edge detection,Degree of the details selection

小波分解的级数控制观察距离"调焦"，改变 Marr算子中的标准差σ、可实现在同一分辨率级上所要求检测边缘的细节程度。

Two significant technologies were analyzed for stage lighting control system sine wave dimmer and network management in this paper.

对灯光控制系统中的两项重要技术——正弦波调光和网络化管理进行分析和探讨。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失