变频调速技术以其高可靠性及优良的控制性能，可以作为自动换气调温系统应用在花卉培育温室大棚中。
Frequency control Technology, which can be used as automatic air exchanging and conditioning system in flower cultivation greenhouse, has high reliability and excellent control performance.
对城市供热系统中循环水泵的配置及变频调速进行了介绍，分析了其节能效果。
The configuration and variable frequency adjusting speed of water circulation pump in city heat-supply system are introduced, and the effects of energy saving are analyzed.
本文介绍了变频调速技术在供暖系统补水改造上的应用及改造效果分析。
This paper presents the situation of application and effect of frequency-converting technique in unit heater system.
同时，变频调速水泵及平衡阀、调节阀是系统中必不可少的重要设备。
In the meantime, frequency convertation control water pump and balance valves, regulate valves are necessary and important equipments in system.
介绍采用磁电脉冲测速构成转差频率控制的闭环变频调速系统的组成、原理及动态性能。
The paper introduces the composition, principle and dynamical performances of the closed loop VVVF system using magneto electric pulse tacho apparatus to constitute the slip frequency control.
本文提出了一种异步电动机电流型变频调速系统传递函数的分析及工程设计方法。
This paper presents the methods of transfer function analysis and engineering design for variable frequency adjustable speed system of induction motor supplied by current source inverter.
由于矿井提升机对转速精度及加减速度要求较高，必须采用高精度变频调速系统。
As the mine hoist on the speed of addition and subtraction accuracy and speed requirements of high precision, variable-frequency control system must be used.
该文简要介绍了变频调速节能原理及在罗茨式鼓风机控制系统采用变频调速的效果与优点。
This paper briefly introduces the principle of energy saving of frequency control and the result and advantages of application frequency control in the control system of Roots blower.
分析了数控抽油机的运动规律及电力拖动系统，论述了变频调速技术在系统中的应用。应用可编程控制器(PLC)完成抽油系统的自动控制。
The movement law and electric driving system are analyzed. Variable frequency technique used in the system is discussed and PLC is used for automatic control of the pumping unit.
基于矢量控制理论设计了一套全数字变频调速系统，介绍了系统结构及软硬件设计方案。
Based on vector control theory, a full digital variable speed system is designed. The system structure and method for designing the software and hardware are introduced.
围绕着提高系统可靠性，讨论了变频调速系统的电气接线及功能。
Around increasing system reliability, the electrical circuit and function of variable frequency speed-governing system is discussed in this paper.
本文介绍了变频调速供水系统的原理，重点介绍了PLC控制系统的结构特点及系统硬件和软件设计方法。
In this paper, the control principle of VVVF Providing-water system is introduced, mainly introduces structural properties of PLC control system, and the design method of hardware and software.
该系统通过自动化仪表、变频器、编码器及PLC的相互结合，可实现转鼓的精确调速，提高水渣品质。
Drum rate can be accurately adjusted and water slag quality improved by combining automatic equipment, frequency transformer, coder and PLC.
以某学校供水系统为例，研究了PLC及变频调速技术在电气控制中的应用。
This article takes water -supply system of one school as an example, researches the application of PLC and frequency conversion speed adjustment technology in the electrical control system.
介绍智能型模糊逻辑控制器及变频调速在水泥矿山石灰石破碎系统中的应用、调试。
The paper introduces the application and testing of intelligent fuzzy logic controller and alt-frequency speed-control technology in limestone crushing system in mining .
在各种异步电机调速系统中，效率及性能最好的系统是变压变频调速系统。
The best system of efficiency and function are becoming the pressure frequency conversion velocity modulation system in the various asynchronous electrical machinery velocity modulation system.
该文简要介绍了变频调速节能原理及在罗茨式鼓风机控制系统采用变频调速的效果与优点。
The paper introduces application of frequency converting technology in control system of Roots blower, and describes the effects of energy saving and economic benefit.
论述了某烧结厂浊环水泵供水系统 ，根据其工艺特点 ，采用压力传感器及智能调节器组成压力闭环系统 ，控制变频调速器 ，从而调节电机———水泵之转速 ，维持供水压力为恒定 。
This paper introduces the application of general inverter in the coal dust supply closed loop control system of power station, which consists of relevant transducer and intelligent controller.
介绍了利用变频调速技术对通风机进行节能改造工作原理及系统设计。
The paper introduces the working principle of which frequency control technology is applied in energy-saving reformation for ventilating fan. The frequency control system was designed in detail.
本文阐述了PLC、变频器调速自动控制供水系统设计的机理，且较为详细的讲述了整套系统的硬件、软件设计的特点及显示情况。
This Paper explains the design principle of automatic water-supply system based on PLC and Inverter control, and introduces the characteristic of system software and hardware design in detail.
介绍了转子侧变频调速技术的原理、系统构成及特点，并指出其相对于定子侧变频调速技术的优势所在。
Its principles, system structure and characteristics are introduced, and its advantage over the stator side VVVF is pointed.
本文介绍一种最新的供水系统设计，以变频调速技术、可编程控制器技术及PID调节器技术为基础，构成以压力为控制对象的闭环控制系统。
This paper gave a new design for water feeding system, the system was based on VVVF motor driver. PLC and PID closed loop control.
本文介绍一种最新的供水系统设计，以变频调速技术、可编程控制器技术及PID调节器技术为基础，构成以压力为控制对象的闭环控制系统。
This paper gave a new design for water feeding system, the system was based on VVVF motor driver. PLC and PID closed loop control.
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