高频脉冲宽度调制电力控制系统，可以实现用半导体开关。
High frequency pulse width modulation power control systems can be realized using semiconductor switches.
背后的原则，在整个过程中是平均电力交付是成正比的调制占空比。
The underlying principle in the whole process is that the average power delivered is directly proportional to the modulation duty cycle.
随机调制技术能够改善电力电子系统电磁兼容性。
Randomized modulation technique can improve the electromagnetic compatibility of power electronic system.
设计了应用于交直流互联电力系统的直流功率调制的非线性鲁棒自适应控制器。
The robust adaptive control law is proposed for a HVDC power modulation controller of the interconnected AC/DC power system.
提出了一种电力有源滤波器补偿参考电流的倍频调制检测新方法。
A new method of detecting compensating reference current for active power filters by frequency multiplication modulation (FMM) is presented in this paper.
双向工频通信技术(TWACS)是一种基于电力配电网络的新型通信技术，具有独特的调制解调机理。
Two Way Automatic communication System (TWACS) is a new valuable communication technology for distribution networks, which has special of modulation and demodulation.
双向工频通信技术(TWACS)是一种基于电力配电网络的新型通信技术，具有独特的调制解调机理。
TWACS is a new valuable communication technology for distribution networks, which has special principle of modulation and demodulation.
一种数字电路实现的脉冲宽度调制控制在可以将其建模为二阶或更高阶系统的系统中传输的电力。
A digital circuit implementing pulse width modulation controls power delivered in what one can model as a second order or higher order system.
PWM调制技术已广泛应用于电力电子技术中，但PWM调制信号含有大量的高次谐波，成为产生emi的主要原因之一。
Though PWM modulation technology has already been used in power converter abroad, it becomes a main reason which can produces EMI because PWM modulation signal contains abundant high harmonic.
介绍了一种全数字方案的电力线载波通信调制模块。
A kind of all-digital modulation module for power-line communication systems is described.
电力变换器主电路部（3），其根据该脉冲宽度调制波对开关元件进行驱动，将直流电压转换为三相交流电压；
A power converter circuit (3) drives a switching device by the pulse-width modulated wave for converting a direct current into the three phase alternating current.
本文分析了在电力线这一特殊介质中由调制解调实现信息传送的可能性和意义。
This paper deals with the possibility for modulation and demodulation via power line, the particular transferring medium.
机床电力拖动系统采用集成电路实现脉宽调制方式调速用IGBT管驱动电动机。
This article presents the application of IGBT-PWM regulating speed system in machine tool's electric drive.
本文阐述了静电力发生器的结构，提出并研究了用脉宽调制反馈力线性化静电力发生器的方法。
The structure of the electrostatic producer is expatiated, and the method with which the pulse-width modulation feedback force linearizes the electrostatic force producer is purposed.
理论推导和仿真结果表明，COFDM调制技术适合在高压电力线载波通信中使用，在明显的提高数据传输率的同时降低误码率并增强系统可靠性。
Proved by the theoretic deriving and simulation result, the COFDM modulation technology is well suitable for high voltage PLC with a high transmission speed, low BER and high reliability.
实践证明，以扩频调制、解调为基础的电力线载波通信方案可获得较高的通信速率和较低的误码率。
It has been proved in reality that a PLCC based on spreading spectrum modulation and demodulation can achieve a higher communicating rate and a lower bit error rate.
为了探讨用光学方法测量电力系统中的物理量，根据琼斯矩阵法推出了电光效应与磁光效应组合光调制的公式。
With the method of Jones matrix, formulas for intensity of transmitted light through the optical analyzer of various composition of electro-optic effect with magneto-optic effect are derived.
本文介绍了一种基于扩频技术的电力线调制解调芯片SC1128，分析其通信特性，与国内外同类产品进行了对比。
This paper introduces a power line modem chip SC1128 based on Expanding Frequency technique, analyzes it' s characteristic and compare it with other modem chips.
熟悉酒店的电力配电系统、空调制冷系统、消防系统、给排水系统、电梯系统、弱电和强电系统及其附属系统的运作管理及维修保养。
Be familiar with the maintenance of Hotel's electricity distribution system, Fire-fighting system, Water supply system, Lift system, Low &high voltage electric system.
ST7536实现系统与电力线的接口，完成数字信号的调制与解调；
The interface circuit of ST7536 and power line finishes the modulation and demodulation of digital signal.
文中介绍了两种调制技术的基本原理，分析了其在电力线通信中应用的优越性。
This paper introduces the basic principles of the two modulations, and then discusses their advantages for the application in power line communication.
本文采用了流行的扩频技术、根据扩频芯片sc 1128设计了电力线调制解调器，在硬件系统的基础上，我们设计了一套切实可行的软件方案。
The article adopts the prevalent technique of Spread Spectrum, and designs a kind of Power Line Modem based on the SS chip SC1128.
信息可以数字信号的形式在电力线上传输，也可通过调制解调器直接传输图象信号。
The information could be transferred on the power line in the form of digital signal, or on the telephone line by a modem with and image.
本论文选用了一种基于扩频技术的电力线调制解调芯片SC1128，通过与国内外同类产品的对比，分析其通信特性和适用性。
This paper introduces a power line modem chip SC1128 based on Spread Spectrum technique, analyzes it's characteristic and compare it with other modem chips.
本论文选用了一种基于扩频技术的电力线调制解调芯片SC1128，通过与国内外同类产品的对比，分析其通信特性和适用性。
This paper introduces a power line modem chip SC1128 based on Spread Spectrum technique, analyzes it's characteristic and compare it with other modem chips.
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