查询词典 modulation

Chapter 6 proposes a new method of analysis performance for modern modulation systems by means of the vector space representation of digitally modulated signals and the multivariate statistical theory.

具体分为三个方面：第一，同样利用了信号的矢量空间理论和多元统计分析原理，建立2FSK系统的矢量数学模型。

The principle of Space Vector Pulse Width Modulation control of three phase inverter is presented.

文中叙述了三相逆变器空间电压矢量控制的基本原理。

In this paper, in order to improve system performance, fuzzy control technique and Voltage Space Vector Modulation technique were applied to DTC.

本文在分析交流电动机数学模型的基础上，首先介绍了直接转矩控制的原理。

This paper introduces the basic principle of pulse width modulation based on voltage space vectors and realization algorithm.

本文介绍了SVPWM的基本原理及其实现算法。

Is coaxial actuates a alternator based on Simens PLC and its the network direct current velocity modulation system by a direct current motor, the direct current motor to actuate with the direct current velometer and to be loaded with revolves the encoder examination rotational speed; The generator electricity generation voltage after the numeral demonstrated the table demonstrated and delivers to the PLC simulation quantity load module.

在工业控制过程中，继电接触器控制系统因其没有运算、处理、通讯等功能，而不能完成复杂的控制方式，20世纪60年代PLC控制系统应运而生，它综合了计算机技术、自动控制技术和通信技术等现代科技，是当今工业自动控制的标准设备之一；70年代以后，又相继出现了集散控制系统DCS、现场总线控制系统FCS，现在以及今后很长一段时间内会是三种控制方式并存的局面，在这一背景下该文分析PLC控制的现状及发展前景。

Welding control system comprises hardware and software, using C language welding program, and it reduces difficulty of control system exploitation. Scheduling control, sampling disposal of feedback signals and digital PI modulation are achieved through program control, and this controls veraciously welding process.

焊接控制系统由硬件和软件两部分组成，焊接程序采用C语言编写，降低了控制系统软件开发的难度，通过程序控制实现时序控制、反馈信号的采样处理及数字PI调节，对焊接过程进行准确的控制。

Multilevel vestigial sideband modulation in HDTV can be implemented by analog or digital method.

高清晰度电视中的多电平残留边带调制既可用模拟的方法也可用数字的方法实现。

Based on theoretical analysis to this modulation phenomenon, two sets of linealy equations for computing 3D displacement of the virtual point sources of the reference beams and the measured object have been derived.

基于对这种调制的理论分析，导出计算参考光虚点光源和被测物体三维位移的二个线性方程组。

In the fourth chapter and the fifth chapter, the article designed the front-end, including the power generating circuits, the clock generating circuits, the modulation/ demodulation circuits, and the voltage comparator. All the circuits were simulated and proved to work correctly. Finally the article designed layout of the front-end.

对基本的微分上电复位进行改进，防止高频信号错误复位；用简单的电路实现了对信号的电容负载调制；用电压检测的方法实现对信号的解调；设计了一个CMOS交叉耦合箝位电压比较器。

The system directly uses the frequency conversion velocity modulation way automatic control the speed of water pump motor, has saved the system investment.

系统直接采用变频调速方式自动调节水泵电机的速度，节省了系统投资。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。