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描述的是两个振动信号的合成,注意采样点数、间隔、频率、振幅、初始相位的不同而带来的变化-Described in the synthesis of the two vibration signal, alert the sampling points, the interval, frequency, amplitude, an initial phase of the type of changes brought
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利用声学数值仿真软件 LMS Virtual.Lab Rev,仿真赫姆霍兹谐振器的内部声场分布及弹性背板的振动幅度频率响应-The use of acoustic numerical simulation software LMS Virtual.Lab Rev simulation Helmholtz resonator internal sound field distribution and flexible backplane vibration amplitude frequency
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可用于转子的动力学分析,包括固有频率的计算和振型的输出。-Can be used for rotor dynamics analysis, including the calculation of the natural frequency and vibration mode output.
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16键单片机电子琴汇编程序,通过设置不同的频率震动,通过放大电路播放按键声音制作成音符。通过实践制作已经程序可行,可作为课题设计。-16-key keyboard microcontroller assembler, by setting different frequency vibration, sound by amplifying circuit Play button made into notes. Production has been feasible through pract
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对重分配小波尺度谱存在着时、频分辨率不能同时达到最佳及当振动信号中存在着能量较大的噪声时会降低其时频分布可读性的缺陷,提出一种基于参数优化和奇异值分解(SVD)提高重分配尺度谱时频分布可读性的方法。首先利用Shan—
non熵方法优化重分配尺度谱基函数的时间.带宽积(TBP),克服其时、频分辨率不能同时达到最佳的缺陷,再对重分配尺度谱
进行SVD降噪降低噪声干扰影响,提高时频分布的可读性。最后用该方法对仿真信号和滚动轴承故障信号进行了分析,结果表明该方法的时频聚集性更好,抗噪能力更强,能
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The National Instruments PCI-4472 and
PXI-4472 are 8-channel dynamic signal
acquisition devices for making high-accuracy
audio-frequency measurements. The
PCI-4474 is a similar 4-channel board.
The vibration-optimized NI PXI-4472B offers a
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根据洗衣机振动实验结果,用MATLAB软件进行时域、频率幅值和功率谱分析-According washing machine vibration test results, using MATLAB software for time domain, frequency, amplitude and power spectral analysis
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已采集线性震动系统(钢板)的输入与输出(时域幅值),求解系统数值解,幅频特征,并作图比较。-Have been collected linear vibration system (steel) input and output (time domain amplitude), numerical solution for solving the system, the amplitude-frequency characteristics, and mapping to compare.
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开发环境:unSP IDE 2.0.0
实验目的:
1)了解SPCE061 PLL 振荡器的功能及其应用。
2)掌握系统时钟单元P_SystemClock的设置方法。
3)熟悉系统时钟和CPU时钟频率的编程方法。
实验设备:
1)装有µ ’nSP™ IDE仿真环境的PC机一台。
2)µ ’nSP™ 十六位单片机实验箱一个。
3)示波器一台。
实验原理:
在SPCE061A内,P_SystemCloc
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LC振荡电路,怎么不起振,电源12V,三极管9018,想做30M的,LC参数计算是30M,用Multisim仿真频率正确-LC oscillator circuit, how not afford to vibration, power supply 12V, the transistor 9018, want to 30M of, LC parameter calculation is 30M, with Multisim simulation frequency correct
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低频超低频振动计量技术的研究与展望-RESEARCH PROSPECTS OF METROLOGY TECHNOLOGY FOR LOW-FREQUENCY AND SUPER LOW-FREQUENCY VIBRATION
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桨叶嵌入式液弹吸振器,是一种新型的桨叶减摆器,该函数功能是求桨叶在一阶激励频率下的幅频响应,-Liquid bomb embedded blade vibration absorber, is a new blade damper, the function function is seeking an order in the blade under the excitation frequency amplitude-frequency response,
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matlab在振动分析中的应用源代码 包括各种信号处理的时域频域方法 强烈推荐 仅供学习交流-matlab in vibration analysis application source code, including various signal processing frequency domain method is strongly recommended for learning exchanges
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针对柴油机振动信号的瞬时非线性特点, 提出采用柴油机振动信号的本征模函数( IMF) 分量进行特征频带识别的新方法。将柴油机振动信号经经验模态分解, 并去掉主要干扰因素所对应的IMF分量, 再将剩余IMF分量进行重构得到柴油机振动信号-For instantaneous nonlinear characteristics of vibration signals of diesel engine, the diesel engine vibration signal of the intrins
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基于反应谱计算的基本原理,对于单自由度弹性体系在水平地震运动xg(t)作用下的动力平衡微分方程,分别使用gradient和diff进行计算,并与使用cumtrapz命令积分计算的精确计算反应谱积分公式和简化的反应谱计算积分公式值进行了比较,xg(t)分别选取了实测的爆炸震动数据和天然地震数据,经过计算发现,对于高频比较显著的爆炸震动波,用上述方法计算出的反应谱在低频部分有小的差别,对反应谱的整体特征影响不大.但对于低频比较显著的天然地震波,用cumtrapz积分计算的积分公式与用diff命令计算
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单自由度振动系统,求其频响函数,改变质量,阻尼,刚度对频响函数的影响-Single degree of freedom vibration system, find the frequency response function, changing the impact mass, damping and stiffness of the FRF
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轴承振动范列,精确计算出轴承振动故障频率-Fan out bearing vibration, bearing vibration failure to accurately calculate the frequency
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对采集到的振动信号进行EMD分解,得到一系列频率不同的经验模态函数IMF分量,可以用来滤波和提取原信号的特征。-The collected vibration signals of EMD, get a series of different frequency components of IMF empirical mode function can be used to filter and extract features of the original signal.
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用来求解圆管耦合振动的基频及响应的MATLAB程序-Used to solve the fundamental frequency of the tube and coupled vibration response of the MATLAB program
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导入振动信号(2信道)分析时域、频域波形的MATLAB-GUI界面-Import vibration signals (2-channel) analysis in time domain and frequency domain by MATLAB-GUI interface
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