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该算法用于抽取垂直振荡信号的谐波频率,以及信号的包络。同时包含了语音信号实例。-Harmonic frequency envelope of the algorithm for extracting the vertical oscillation signal, and the signal. Examples of the speech signal contains.
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The HHT represents a time-dependent series in
a two-dimensional (2-D) time-frequency domain by extracting
instan eous frequency components within the signal through
an Empirical Mode Decomposition (EMD) process. The analytical
background of t
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手机震动代码,具有停止、设置震动间隔、震动次数。-Phone vibrates code has stopped, set the interval shock, vibration frequency.
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PID控制振动台的振动频率,需要数据采集卡和驱动板卡的操作-PID control vibration frequency vibration table requires data acquisition card and driver board operation
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基于随机减量法得到自由衰减时程,并进行去噪,后小波变换,拾取小波脊线处的幅值以及相位信息,提取自振频率及模态-The random decrement method based on free decay time, and after denoising, wavelet transform, wavelet ridge is picking up the amplitude and phase information extraction, natural vibration frequen
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本代码用于模拟二维桁架结构在外载激励作用下、存在动力吸振器的情况下的响应情况,完全原创,只有一个m文件用于生成桁架振动动画的avi文件,其余三个函数用于辅助生成具体桁架结构的参数以及辅助计算。外载荷频率、动力吸振器固有频率可以通过改变代码中的变量来控制。-This code is used to simulate the two-dimensional truss structure as set out under the incentive, there are circumstances
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A set of new features for frequency domain dynamic and acoustic computation have been implemented in LS-DYNA. They include random vibration and high-cycle fatigue analysis, frequency response functions, steady state
dynamics, response spectrum ana
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该程序主要基于对信号的处理,主要功能是实现振动合成,振动合成模块,该模块分为两个部分:频率相同的简谐振动的合成、同一直线上不同频率的两个简谐振动的合成。-The program is mainly based on the signal processing, the main function is to achieve the synthesis of vibration, vibration synthesis module, which is divided into two parts
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本程序为《matlab在振动信号处理中应用》的配套程序,对于振动信号的处理,时域频域信号的处理有很大的帮助-This program is " matlab application in vibration signal processing" matching program for processing vibration signal processing time domain and frequency domain signal of great help
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这个程序可以控制按摩器的震动频率和运行时间单片机STC89C52-This program can control the massager vibration frequency and run time SCM STC89C52
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1.将产生未综合系统的根轨迹图以及0.707阻尼比例,你可以交互的选择交点运行点,界面能显示运行点的坐标,增益值,以及近似为二阶系统估算的超调量,调整时间,峰值时间,阻尼比,无阻尼自然震荡频率以及稳态误差。
2.显示未综合系统的阶跃响应。
3.输入控制器的参数,绘制综合后系统的根轨迹图以及显示综合的设计点(主导极点),允许不断改变控制器参数,直到所绘制的根轨迹通过设计点。
4.对于综合后的系统,显示运行点的坐标,增益,近似为二阶系统估算的超调量,调整时间,峰值时间,阻尼比,无阻尼自然
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振动信号加速度积分程序,可以完成信号的时频和频域积分,功能强大-the program for vibration integral both time and frequency domain.
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数字频率计作为一种常见的应用电子仪器设备,传统的一般可以完全由硬件电路搭接而成,如采用基于555 定时器电路的多功能数字频率计的设计便是可取的路径之一,不用依靠单片机。但是这种电路存在一些缺点,且测频精度也不如单片机的高。在科学研究和生产实践中,如工业过程控制,生物医学,地震模拟机械振动等领域常常要用到频率计。利用单片机采用程序设计方法来设计频率计,其测频精度高。且线路相对简单,结构紧凑,价格低廉,系统稳定度高,抗干扰能力强,用途广泛等优点-Digital frequency meter is
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模态分析,用FFT对输入的激励信号提取振动的频率-Modal analysis using FFT excitation signal input to extract vibration frequency
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在MATLAB 中载入程序后,输入模型的时程响应数据,可以求得模型的自振频率和阵型。-After loading the program in MATLAB, duration of response data input model, the model can be obtained the vibration frequency and formation.
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悬臂梁在冲击振动下,通过MATLAB编程,比较有限元方法和模态叠加法下加速度谱识别固有频率效果-In Izod impact vibration by MATLAB programming, at a relatively finite element method and modal superposition method to identify the natural frequency spectrum of the acceleration effect
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PS2手柄通讯协议破解,STM32 F103实现,可调节震动频率与获取摇杆值与按键值。(PS2 handle communication protocol crack, STM32 F103 implementation, can adjust the vibration frequency and obtain joystick value and key value.)
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风机模态参数识别,主要是风机急停工况下阻尼、自振频率等识别(The identification of the modal parameters of the wind turbine and is mainly the identification of the damping and vibration frequency of the wind turbine under the emergency shutdown condition.)
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超声波传感器是将超声波信号转换成其他能量信号(通常是电信号)的传感器。超声波是振动频率高于20KHz的机械波。它具有频率高、波长短、绕射现象小,特别是方向性好、能够成为射线而定向传播等特点。超声波对液体、固体的穿透本领很大,尤其是在阳光不透明的固体中。超声波碰到杂质或分界面会产生显著反射形成反射成回波,碰到活动物体能产生多普勒效应。超声波传感器广泛应用在工业、国防、生物医学等方面。(Ultrasonic sensor is a transducer that converts ultrasoni
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congr.m - Congruent envelope and instantaneous frequency
coph.m - Congruent phase estimation
diffir.m - Remez differentiator with filtering procedure(duffod.mat - Duffing equation forced excitation and vibration solution
duffrd.mat - Duffing equ
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