当前位置:
首页
资源下载
![](/images/right.gif)
搜索资源 - Harmonic frequency
搜索资源列表
-
1下载:
本系统是一个以c5051f020单片机为控制核心的简易电能质量监测装置。它能准确的完成同时对一路工频交流电的频率、电压有效值、电流有效值、有功功率、无功功率、功率因数和谐波等进行测量的数字式电能质量监测装置。-The system is a c5051f020 simple microcontroller to control the core power quality monitoring devices. It can accurately complete all the way wh
-
-
17下载:
电磁场有限元分析软件FEMM的安装程序,ver.4.2 。不可多得好软件,可以应用于电机、电磁铁、磁悬浮等相关领域。-The finite element method (FEM) is one of the most successful computational techniques for obtaining approximate
solutions to the partial differential equations that arise in many scientifi
-
-
0下载:
利用FIR滤波器设计一个低通滤波器,能够分析到电力系统中的三次谐波,要求满足如下指标:截止频率150HZ,阻带衰减≥30db-FIR filter design using a low-pass filter, to analyze the power system in the third harmonic, the requirements to meet the following indicators: cut-off frequency 150HZ, stopband attenuat
-
-
0下载:
本文是设计一个基于凌阳61A单片机的语音报时系统,利用凌阳61A板这样一种本身就带有语音识别和播放功能的单片机来进行时间的播报。把凌阳61A板单片机的语音播报功能加入到设计中,通过对它的运用来了解一个带语音的系统应如何设计。在语音报时系统的设计中,要处理好以下几个关键:DA转换,语音识别,人机接口,程序设计。DA和语音识别技术关系到时间的正确播报。人机接口是播报时间和调整时间的关键。因此,利用凌阳61A单片机在语音识别和处理方面的优点,结合实践,设计出有特色的语音报时系统。-The system
-
-
2下载:
电磁场二维有限元分析软件FEMM的开发源代码。FEMM软件是一款简单、快捷、计算准确的工程电磁场的有限元分析工具。通过对软件架构的了解,可以帮助大家更好的了解有限元分析软件的工作流程,为完成自己的有限元开发源代码提供不可多得的参考。此代码的应用并不局限于电磁场领域。-Finite Element Method Magnetics (FEMM) is a software package for solving electromagnetic problems using FEM. The pro
-
-
0下载:
音频的提取和合成,主要LPC峰值提取,频域谐波提取,并处理后再合成。
用于音频的处理和合成-Audio extraction and synthesis, the main peak of LPC extraction, frequency-domain harmonic extraction and processing, then synthesis. For audio processing and synthesis of
-
-
0下载:
Very Low Frequency (VLF) spectrograms show
sometimes sets of lines called MLR (Magnetospheric Line
Radiation) with frequency spacing close to 50 or 60 Hz. It is
very tempting to attribute these MLR to Power Line
Harmonic Radiation (PLHR). PLH
-
-
0下载:
利用MSPd30F149 单片机和AIM21电流环芯片,通过简单的压频转换(多谐振荡器)电路实现了基于电客式差压
传感器的智能差压变送器设计。该设计的特点是利用压频转换电路取代了A/D模块,以极低的产品价格达到了较高的
系统测量精度。采用软件与硬件相结合的信号处理技术,实现了基于HART协议现场总线技术的差压模拟量的测量,通
过进一步采用CPLD器件的量化延时测频技术,将可以达到比传统A/D器件更高的压力测量精度。智能差压变送器;HART协议现场总线;MSP430F149;AIM21
-
-
0下载:
a program is generating a signal (harmonic or chirp signal (linear-frequency modulation)) for performing correlation function, which was noised by gaussian or with a noise has a uniform distribution with appropriate parameters (expectation value and
-
-
1下载:
将fft后的数据进行分谐波叠加,用来求含有谐波的声音,如人声、乐器等的基频-Fft the data after the sub-harmonic superposition is used to seek containing harmonic sounds, such as human voice, musical instruments, such as fundamental frequency
-
-
0下载:
用于谐波小波提取特定频率信号,还可以用于滤波等-Harmonic Wavelet Extraction for a specific frequency signals, but also can be used for filtering, etc.
-
-
0下载:
谐波失真(THD)指原有频率的各种倍频的有害干扰。放大1kHZ的频率信号时会产生2kHZ的2次谐波和3kHZ及许多更高次的谐波,理论上此数值越小,失真度越低。-Harmonic distortion (THD) refers to the original frequency range of frequency doubling of harmful interference. The frequency of signal amplification 1kHZ produce 2kHZ 2
-
-
0下载:
Abstract—This paper describes a pseudorandom carrier modulation
scheme and its harmonic spectra spread effect. The pseudorandom
carrier of the proposed scheme are produced through
the random synthesis of the two triangular carriers, each of the
-
-
0下载:
This application note shows the typical impedance values for small loops and suggests matching networks for these impedances. It
demonstrates the effectiveness of these networks in suppressing harmonics of the transmitted frequency. Most transmitt
-
-
0下载:
该函数sinfap.m评估频率,振幅,相位和平均均匀采样谐波信号值。-The function sinfap.m evaluates frequency, amplitude, phase and mean value of a uniformly sampled harmonic signal
-
-
0下载:
This file forms an estimate of the frequency spectrum using Pisarenko harmonic decomposition.
-
-
1下载:
在计算机上产生一组实验数据,首先产生一段零均值白噪声数据u(n),令功率为 ,让u(n)通过一个三阶FIR:
得到y(n). .y(n)上加三个实正弦信号f1’=0.1,f2’=0.25,f3’=0.26调整 和正弦信号幅度信噪比大致为10dB,50dB,50dB. (1) 令N=256,描绘xn波形;
(2)得出真实功率谱密度 .
(3) 利用此实验数据Pisarenko谐波分解法估计该实验数据的正弦频率及幅度。-On the computer to generate a
-
-
2下载:
用Pisarenko谐波分解法估计一组实验数据的正弦频率及幅度。得出真实功率谱密度。-Pisarenko harmonic decomposition method with a set of experimental data estimate the sinusoidal frequency and amplitude. The true power spectral density obtained.
-
-
0下载:
用谐波信号(至少两个以上频率)产生一组时间数字序列,用FFT分析信号的频谱,确定采样频率、采样的数据长度,根据FFT的计算结果分析信号的幅值和相位。
讨论采样频率、数据长度对结果的影响。
-With harmonic signals (at least two or more frequency) produces a set of time sequence of numbers, with the FFT frequency spectrum analysis to determin
-
-
0下载:
分析了噪声背景下实谐波过程ARMA模型系数之间的对称性,并以此为约束条件加入ARMA谱估计方法的求解过程中,从而提出了一种改进的正弦信号频率估计方法.理论分析与计算机仿真表明,对于低信噪比条件下的正弦信号参量估计,这一算法的精度与稳定性都优于仅使用总体最小二乘法(SVD-TLS)的ARMA谱估计方法.-Analysis of real harmonic process noise background symmetry between ARMA model coefficients, and a
-