查询词典 power frequency

The system has realized signal generator, signal"s sampling and averaging function, signal"s power spectral density and cross special density analysis, the design and application of digital filter, signal analysis in time, frequency and inverted frequency domain.

实现了波形发生器的设计、信号采集及平均处理、滤波器的设计及应用、信号的时域、频域以及倒频域分析。

This paper develops a high-frequency welding power source with double-ended flyback topology.based on SG3525 a new type of control program is designed which with controlled pulse energy output characteristics, pulse width and frequency can be controlled, to control output energy.

本文给出一种基于双端反激式主电路拓扑和SG3525 PWM控制芯片，研制了一台高频脉冲能量可控式焊接电源，该电源通过对输出电流的脉宽和频率单独控制，从而控制输出能量。

DTV frequency includes in overall semiconductor sale / the chip on video board, and the chip in other type TV, include an input / output circuit, driver, frequency and power source.

总体半导体发卖额中包括DTV音频/视频板上的芯片，以及其它类型电视中的芯片，包括输入/输出电路、驱动器、音频与电源。

The high frequency plasma discharge electrodeless lamp consists of the bulb, power coupler and high frequency generator.

高频等离子放电无极灯是由灯泡、功率耦合器和高频发生器，三部分组成。

This paper describes a feasible calibration method, its basic principle for calibrating is: A certain function relationship is existed in equivalent inductance L of coil and the distance x between the object to be measured and the sensor coil, the measurements can be conducted with this function relationship by using frequency modulation. The calibrating system consists of measuring electric circuit, high stable voltage power supply, digital frequency meter, the conductor to be measured and the calibrated displacement sensor.

文中叙述了一种较为可行的标定方法，其标定的基本原理为：线圈的等效电感L和被测物体与传感器线圈的距离x存在一定的函数关系，利用这种函数关系用调频法进行测量，标定系统由测量电路、高稳定度稳压电源、数字频率计、被测导体及被校位移传感器组成。

In the end, the main content of this dissertation is addressed.In chapter 2, based on the analysis of present vibrators principle and structure, two kinds of transfer functions and frequency response curves of the vibrator, driven by voltage feedback power amplifier and current feedback amplifier, are given separately. And turnover frequencies between different frequency rangs are also given.

第二章分析了标准振动台的工作原理和结构，在此基础上，建立了标准振动台的机械和电气方程，给出了恒压源和恒流源功放激励下的振动台传递函数及幅频、相频特性曲线，列出了不同频段间的转折频率。

This process described the frequency changer - sensor - electric motor test system mathematical model, and in the platform which the microcomputer, the high speed sampling card, hypothesized instrument software constitutes, has realized to the frequency changer power supply electric motor test.

此次过程描述了变频器-传感器-电动机测试系统的数学模型，并在微机、高速采样卡、虚拟仪器软件构成的平台上，实现了对变频器供电的电动机的测试。

Note: The power lines of frequency changer cannot get connected to wrong input or output lines, or else the frequency changer will be damaged.

千万注意，变频器的动力线，输入和输出不能接反，否则变频器损坏。

The 90 percent of input power is broadened to the fundamental frequency, first and second side frequency.

使90%的光功率分散于主峰以及一、二次边频，且一、二次边频的功率近似相等。

Aimed at rapidity and low power consumption required by intelligent mines,based on correlation theory and pattern recognition technology,a new method is given,in which helicopter noise signal of time domain is analyzed directly,that is to estimate fundamental frequency by calculating self-correlation function,then recognize target thinking of the fundamental frequency as characteristic quantity.

预警识别是被动声探测的关键技术之一，其作用是探测环境噪声信号作为预警信号，当直升机或其它目标出现时，传声器检测到的声能首先被转化为一定幅度的电压信号，电路通过判断信号的大小和其它特征来确定是否出现直升机目标。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷