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SVPWM_VSI
SVPWM是近年发展的一种比较新颖的控制方法，是由三相功率逆变器的六个功率开关元件组成的特定开关模式产生的脉宽调制波，能够使输出电流波形尽可能接近于理想的正弦波形。空间电压矢量PWM与传统的正弦PWM不同，它是从三相输出电压的整体效果出发，着眼于如何使电机获得理想圆形磁链轨迹。SVPWM技术与SPWM相比较，绕组电流波形的谐波成分小，使得电机转矩脉动降低，旋转磁场更逼近圆形，而且使直流母线电压的利用率有了很大提高，且更易于实现数字化。(SVPWM is a novel control method developed in recent years. It is a pulse width modulation wave generated by a specific switching mode consisting of six power switching elements of three-phase power inverters, which can make the output current waveform as close as possible to the ideal sinusoidal waveform. Space voltage vector PWM is different from traditional sinusoidal PWM. It is based on the overall effect of three-phase output voltage, focusing on how to obtain the ideal circular flux trajectory of the motor. Compared with SPWM, the harmonic component of winding current waveform is smaller, which reduces the torque ripple of motor, makes the rotating magnetic field more close to the circle, and improves the utilization ratio of DC bus voltage greatly, and makes it easier to realize digitization.)
- 2019-01-30 10:57:56下载
- 积分：1
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rythreshold
说明： 小波阈值去噪的软硬阈值去噪算法，里面包含了软硬阈值不同的去噪效果，大家一起学习哈(Hard and soft wavelet threshold denoising threshold denoising algorithm, which includes hard and soft threshold denoising different effects, we will study together and Kazakhstan)
- 2011-04-11 10:47:43下载
- 积分：1
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goto
we can use goto function in matlab.
- 2012-08-30 14:25:01下载
- 积分：1
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New-Microsoft-Word-Document
Bit plane slicing using MATLAB
- 2013-12-17 18:47:10下载
- 积分：1
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plane
平面框架弯矩，剪力，刚度矩阵代码，使用MATLAB编制(plane frame moment,shear,stiff)
- 2009-12-18 14:57:24下载
- 积分：1
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multipath_chann
OFDM系统仿真，多径传播信道程序，对移动通信环境进行仿真(OFDM system simulation, multi-path propagation channel program, the simulation of mobile communications environment)
- 2010-05-23 00:06:54下载
- 积分：1
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Ground-based-SAR
The word Radar is the acronym of Radio detection and ranging. Radar is an active instrument, which measures the echo of scattering objects, surfaces and volumes illuminated by an electromagnetic wave internally generated belonging to the microwave portion of the electromagnetic spectrum. It was born just before the second world war for detecting and
ranging target for non-civilian scopes. In this case the requested spatial resolution was not so challenging for the technology available that time. The opening of new technological frontiers in the fifties, including the satellites and the space vehicles, demanded a better
spatial resolution for application in geosciences remote sensing (RS). Synthetic aperture radar (SAR) technique was invented to overcome resolution restrictions encountered in
radar observations from space and generally to improve the spatial resolution of radar images.(The word Radar is the acronym of Radio detection and ranging. Radar is an active instrument, which measures the echo of scattering objects, surfaces and volumes illuminated by an electromagnetic wave internally generated belonging to the microwave portion of the electromagnetic spectrum. It was born just before the second world war for detecting and
ranging target for non-civilian scopes. In this case the requested spatial resolution was not so challenging for the technology available that time. The opening of new technological frontiers in the fifties, including the satellites and the space vehicles, demanded a better
spatial resolution for application in geosciences remote sensing (RS). Synthetic aperture
radar (SAR) technique was invented to overcome resolution restrictions encountered inradar observations from space and generally to improve the spatial resolution of radar images.)
- 2013-03-25 09:30:35下载
- 积分：1
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Non_linear_Channel_equalizer_RLSnLMS_compare
This is a comparison of lms and rls algos in digital equaliser
- 2014-02-03 14:07:33下载
- 积分：1
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complexity1
基于matlab的关于昏迷病人脑电波复杂度分析(Matlab based on the complexity of comatose brain wave analysis)
- 2015-04-14 11:04:32下载
- 积分：1
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Matlab.m
共振解调法诊断轴承损伤类故障的原理概述如下:当轴承某一元件表面出现局部损伤时，在受载运行过程中要撞击与之相互作用的其它元件表面，产生冲击脉冲力，由于冲击脉冲力的频带很宽，必然包含轴承外圈、传感器甚至附加的谐振器等的固有频率而激起这个测振系统的高频固有振动。根据实际情况可以选择某一高频固有振动作为研究对象，通过中心频率等于该固有频率的带通滤波器把该固有振动分离出来。然后进行包络解调，去除高频衰减振动的频率成分，得到只包含故障特征信息的低频包络信号，对这一包络信号进行频谱分析便可以容易地诊断出轴承的故障来。(The principle of resonance demodulation method in the diagnosis of bearing damage such failure overview is as follows: when the bearing surface of a local damage, in the process of loading operation to hit with other elements of the interaction of surface, impact pulse power, due to the impact pulse frequency band is very wide, inevitably contains the bearing outer ring, sensors and even additional resonator and stir up the natural frequency of the vibration system of the high frequency vibration mode.A high frequency vibration mode can be selected according to actual situation as the research object, through the center frequency is equal to the natural frequency of the bandpass filter to separate the natural vibration.Then envelope demodulation, frequency components to remove the high frequency vibration attenuation, get only includes fault feature information of low frequency envelope signal, the envelope signal spectrum analysis can be easily diagnosed bearing failure.)
- 2015-05-20 15:41:09下载
- 积分：1
