调速

Please describe the status of AC Drive technology, as well as problems.

请介绍交流调速技术的发展现状以及存在的问题。

Its vector control system is one of the most complicated ac adjustable speed control systems.

其矢量控制系统也是最复杂的交流电机调速控制系统之一。

Closed circuit timing controls the key that the system designs to depend on the design of adjuster.

闭环调速控制系统设计的关键在于调节器的设计。

Based on minitype aerogenerator system,this paper discusses the method s to improve the performance of minitype aerogen erator.

基于小型风力发电机组整个系统，从风机的风轮、发电机、回转部分的设计，风机的调速方法，风机的控制与变流问题，风机的稳定问题等几方面探讨了如何优化设计小型风力发电机系统的方法。

This series machine adopts best quality parts like Japanese WAC piezo-ceramics selectors, Denmark Danfoss frequency transformer for speed adjusting, Britain brand steel wire track and auto-oiler that supply oil as requirement in different place.

本系列机采用国际领先的日本WAC公司压电陶瓷选针器，丹麦产丹佛斯变频调速器，英国产钢丝跑道，同时配备的自动加油装置可根据圆机不同部位所需的不同油量而调定每个润滑点的加油量。

The result show that, choosing appropriates parameters, the system can archived rapid v...

仿真表明，选择合适的参数，可获得动态响应快、超调小、抗干扰能力强，具有良好的动静态跟踪能力的高性能的矢量控制调速系统。

PWM's field of application includes Class D audio amplifiers, DC motor speed control, and light dimmers common in homes.

脉宽调制的应用领域包括 D 类音频放大器，直流电机调速控制，并根据调光器，在共同的家园。

On the structure a gleam of divides paragraph:⒃ of the lofty that show Po amuses Yan Tuo of time of collection of ⑿ of cut up with a hay cutter of ひ of deer of attentively of T of unoccupied place lofty is fond of Wei Touchun of Tang blame discuss timing of frequency modulation of VVF of 訴 of let down with a rope of ⒌ of dream of take along sth to sb dominates electric machinery, dusting is even and adjustable the canal heats to warm up outside; enamel Yuan Gong fast, safe, clean, lukewarm accuse set, the job is reliable, convenient.

在结构上一线分三段：撒粉段、远红外加热段和复合段。在新工艺、新技术上采用微电脑VVVF调频调速控制电机，撒粉均匀可调；搪瓷远红外加热管升温快、安全、清洁、温控设定，工作可靠、方便。

Ink Electric Mixer used in canned ink,Canned Ink Clip on The Table.Rotated over a knife for a stirring stirring.Mexican uniform Regulation of this Machine.

罐装油墨夹放在工作台上，调墨刀进行旋转，无极调速，有不同大小搅拌刀供1-5KG不同大小油墨罐使用。

A non-linear mathematical model is presented herein to describe the dynamic performance of the governing system for station, and furthermore, the additional index to evaluate the governing performance of the pump-turbine is put forward, that is that the selection of the governor parameters must promote the quick attenuation of the fluctuation of the water level in the surge tank.

文中提出了描述抽水蓄能电站调节动态特性的非线性数学模型，提出了衡量水轮机调节性能质量的附加指标－调速器参数的选择应促使调压室水位波动的快速衰减。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。