调速

There was an increasing demand for engine power due to industrial development. As early as the 2nd century BC, the ancient Greeks invented an engine that was powered by the reaction from spurting steam; in 1690, the Frenchman Barben invented the first piston steam engine. On the basis of his predecessors' work and with his own hard work and numerous trials and failures, James Watt invented the steam engine with connecting rod, flywheel and centrifugal speed governor in 1782.In 1784, the British government granted a patent to James Watt for producing steam engines, which signified that man had entered the age of the steam engine and also significantly expedited the beginning of the Industrial Revolution in 18th century Europe. By the 1830s, steam engines had been widely used in various sectors such as textile, metallurgy, coal mining and transportation; for example, the American Robert Fulton invented the steamboat and the Englishman George Stephenson invented the steam locomotive.

随着社会的进步，社会由农业时代进入工业时代后，对全用手工操作已十分不满足，人们随着工业发展对动力的需求日益突出，瓦特在前人研究蒸汽的基础上，甚至早在公元前二世纪，古希腊人创造的一种利用蒸汽喷射的反作用的发动机，以及1690年法国人巴比首先发明第一台活塞式蒸气机等，刻苦钻研，反复实验，经历无数次挫折和失败，终于在1782年发明了具有连杆、飞轮和离心调速器的双动作蒸气机，使之成为了可以实用的蒸气机。1784年英国政府授予瓦特以制造蒸气机的专利证书，这标志着人类进入了蒸气机时代，有力地促进了欧洲18世纪的产业革命。

The products of MFC can be used on the following auto control loops of continuous production, such as the temperature, pressure, flow, liquid level, density and motor adjust-speed, in the fields of oil, chemical engineering, power, papermaking, coke, light-industry, glassmaking and so on.

项目产品主要用于石油、化工、电力、造纸、焦炭、轻工、玻璃等行业连续生产过程中的温度、压力、流量、液位、浓度和电机调速等环节的自动控制。

By doing Micro-Controller, so as to wholly hydraulic cycle. Based on remaining the dismantling and loading, we make full of the equipped instrument. Several types of valves are linked through gluey tube.

通过单片机，实现整个实验台的控制，在保留其元件可拆装性的基础上，我们充分利用现有液压实验台的液压元件，对其基本回路进行重新组合，用调速阀，溢流阀，节流阀等通过胶皮管连接成所需要的回路。

The company produces goldcup, gold dragon, futian, wanfeng, changan, sitaier etc. type of various cars to use. Temperature controller, enlarger, manipulate, adjust the flat-outresistor, A/C switch, wind velocity switch, electricity the control the box etc. product 100 variety.

公司生产金杯、金龙、福田、万丰、长安、斯太尔等多种车型的汽车空调用温控器、放大器、操纵器、调速电阻器、A/C开关、风速开关、等产品100多种。

Therefore,it has important significance to research the hardware and software of hydraulic turbine governor.

因此，对水轮机调速器的软件、硬件实现的研究具有极为重要的意义。

It has many functions such as conputerized control,frequency conversion speed regulation,fixed-length setting(Fixed-length is divided into servo and stepping two type.The speed is little slower during stepping fixed-length.It can cut paper to maximum 350 gramme of thickness),automatic count,voice-light alarm,electrice eye tracking automatic deviation-correcting etc..

具有电脑控制、变频调速、定长设置（定长分伺服与步进两种，步进定长是速度会慢一点，切纸时最厚只能切到350g）、自动记数、声光报警、电脑跟踪、自动纠偏等功能。

The products are designed to enhance the speed performance of the first granulator and improve the control equipment to improve product quality.

本设计旨在提高产品切粒机头的调速性能，改善设备的控制，达到提高产品质量的目的。

Is one of the earliest professional development and production of electric vehicle speed controller of the private scientific and technological enterprises, the company has a strong professional design and production capacity, products have been a number of brands for the domestic electric vehicles matching efficiency and performance are better than ordinary products, annual production capacity of 200,000 sets, the company has brush controller, using pwm control, high efficiency, with over-current, current limiting, undervoltage,"speed" a wide range of protection features Special high-power brush has controller using the latest electric vehicles for the use of high-life relays and intelligent anti-Speed circuit.

溧阳爱斯特自控器材科技开发有限公司是国内最早专业开发生产电动车调速控制器的民营科技企业，公司具有较强的专业设计及生产能力，产品已为国内诸多品牌电动车配套，其效率及性能均优于一般产品，年生产能力二十万套，本公司生产的有刷控制器，采用pwm 控制，效率高，具有过流、限流、欠压、"飞车"多种保护功能，特别大功率有刷控制器采用最新专供电动车使用高寿命的继电器及智能防飞车电路。

Speed application of high-power pumps in ...

大功率水泵的调速应用。。。

Puts forward a hoister speed governing proposal based on converter technique and fuzzy control theory .

变频技术是应无极调速的要求而产生的，微计算机处理速度的提高则为变频器实现各种复杂的控制算法提供了实时性和快速性的保证。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。