它们的工作原理是通过发出高频声波脉冲并将反馈的信息转变成图像，为了实现这一过程，你还需要一个叫做变频器的设备。
They work by sending out pulses of high-frequency sound and then interpreting the reflections as images.To do all this, though, you need a device called a transducer.
它们的工作原理是通过发出高频声波脉冲并将反馈的信息转变成图像，为了实现这一过程，你还需要一个叫做变频器的设备。
They work by sending out pulses of high-frequency sound and then interpreting the reflections as images. To do all this, though, you need a device called a transducer.
介绍了控制系统的功能、运行节能原理、系统组成和变频器工作原理。
The functions, the principle of operation energy saving, system composition and operational principle of the converter are presented.
介绍了并联逆变式IGBT变频电源的工作原理及在汽车发动机曲轴淬火上的应用情况。
The working principle of the parallel contravariant IGBT variable frequency power supply and its application in the quenching process of engine crankshafts are introduced.
本文提出一种基于变频技术的液压容积调速系统，重点介绍系统结构、工作原理，并建立了数学模型进行分析和仿真研究。
The paper presents a hydraulic volumetric speed control system based on converter technique, laying stress on the introduction of the structure and working principles of the system.
论述了运用PWM整流器实现无功功率补偿的ML变频系统的工作原理、电路结构和控制的实现方法。
The work principle, circuit structure and realization method of control of the ML frequency converter system are discussed. The system USES PWM rectifier to realize reactive power compensation.
介绍了一种基于FRENIC 5000g9s变频调速器的供水装置，并给出了该供水装置的组成及工作原理。
This article introduces a kind of water supplying equipment based on FRENIC5000G9S conversion controller, and its composition and working principle are presented as well.
介绍了COMBIVERT型变频器滑差补偿特性的工作原理和功能，总结了滑差补偿特性参数的设置、调试的方法和步骤。
The principle and functions of COMBIVERT frequency inverter slip compensation character, and the setting method and testing procedure of slip compensation character parameters are also summarized.
阐述了变频调速技术在采煤机中的应用，介绍了交流电牵引采煤机工作原理及发展趋势。
The paper discusses the application of conversion speed regulated technique in shearer. It also introduces working principle and developing tendency of the shearer with ac electric traction.
介绍了煤矿提升机的工作情况和控制过程，从理论上分析了提升机变频调速和节能的基本原理。
Introduces the working-case and the controlling-process of the mine lift, analyses the principle of variable frequency adjust speed and energy saving in terms of theory.
通过对变频调速技术在矿井对旋轴流式风机中的应用，介绍了变频调速技术在风机使用中的工作原理、特点和产生的经济效益。
Through the using of freguencies change to technique in the stalk machine, introduce the change of freguencies technique in the breeze machine's working principle, characteristics and economic effect.
简述了糖果包装机的工作原理，介绍了台达plc、变频器、人机界面在糖果包装机控制中的应用，并对控制系统的软、硬件设计进行了详细的分析。
The working principles of candy packing machine is introduced, the application of PLC, inverter and HMI in the control system is described in detail, focusing on software and hardware design.
详细阐述了单元串联多电平高压变频器的工作原理、系统结构以及脉冲控制的策略。
The work principle, system structure, and pulse control strategy of the cell series multi-level converter are discussed in detail.
介绍了JD-BP37-280F型高压变频器的结构、工作原理以及节能原理。
Structure, working principles and energy saving mechanism of JD-BP37-280F type high voltage inverter areintroduced.
介绍一种新型变频器能量的回馈方案，主要对其工作原理进行说明。
A new energy feedback scheme for frequency converter is described, in which the working principle is mainly introduced.
文章分析了适用于变频器谐波抑制的串联型有源电力滤波器的基本工作原理，并对其控制方法和控制电路进行了研究。
The basic operation principle of the series active power filter for harmonic suppression of frequency converter is analyzed in this paper, and its control method and control circuit are studied.
介绍了微机控制变频电弧炉电极调节器的系统结构、工作原理及模糊控制算法。
In this paper, an electrode regulator for furnace of inverter controlled by a microcomputer system structure, its working principle and fuzzy algorithm are introduced.
本文介绍了用变频器控制碳素配料系统中配料运输车(配料车)的系统组成和工作原理。
This paper introduced the system composition and running principle of burden charging carriage in carbon burdening system controlled by inverter.
提出了一种新颖的高频交流脉冲密度调制变频器的拓扑结构，并详细阐述了工作原理、控制方案和设计方法。
A novel topologic structure of high frequency AC pulse density modulation converter is proposed, and its operation principle, control scheme and design are described in detail.
阐述了在储存输送装置中所应用的交流变频器的基本组成、工作原理及其性能优点。
This article describes the basic components, the working principles and its performance advantages of the AC inverter which is used on the cigarette storing and transferring device.
介绍了一种基于PLC和变频器采用串行总线方式通讯的变频恒压供水系统的构成和工作原理。
The composition and operational principle of an automatic frequency con version constant pressure water supplying system based on PLC and frequency convertor with serial communication are introduced.
介绍了变频器的工作原理及特点。
在分析了其他变频器的局限性后，指出了双PW M变频器是交流励磁的最佳电源方案，详细地讨论了电压型双pw M变频器的工作原理与控制策略。
In this paper, a back-to-back PWM converter is considered as the optimum scheme of ac excitation power supply and its operation principle and control strategy are discussed in detail.
在分析原空压机系统工作原理的基础上提出了空压机系统变频驱动改造方案。
On the base of analyzing the principle of original air compressor system, remolding system is put forward concerned with frequency conversion driving for air compressor.
介绍磁补偿霍尔传感器的工作原理及其优点，讨论了它在变频调速电机、不间断电源(ups)及直流驱动控制方面的应用。
Magnetic Compensated Hall Sensors' theory and merits are introduced in this paper. The application in variable frequency machines, UPS and direct-current drive controller is also given.
介绍了四象限运行高压变频器的工作原理，并应用到煤矿副井绞车改造系统。
This paper introduces the work principle of four-quadrant operating high-pressure frequency converter, and its application in coal mine auxiliary shaft winch innovation system.
本文介绍了苏联（?）85电力机车风机电动机变频调速装置的节能效果及其电路的工作原理。
The frequency control device of the blower motor for the Soviet BJI85 electric locomotive is introduced in regard of its energy saving efficiency and operation principle of the circuit.
介绍变频器工作原理、基地供水系统变频项目以及变频工艺的选择。
The paper introduces the principle of frequency converter, frequency project of base water-feeding system and the selection of frequency technology.
阐述了应用变频技术的原因、工作原理及应用变频技术后产生的经济效益。
Reason, the work principle and applications that elaborated that the application changes the technique of frequency change economic performance that the technique of frequency produces behind.
阐述了应用变频技术的原因、工作原理及应用变频技术后产生的经济效益。
Reason, the work principle and applications that elaborated that the application changes the technique of frequency change economic performance that the technique of frequency produces behind.
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