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水力裂缝 压裂 fulstress constant normal
水力裂缝 压裂,裂缝尖端应力分布,主要用于石油工程开发方面。直接运行即可。(matlab codes for reservoir engineering for hydraulic fracturing stress analysis.)
- 2020-10-07 15:17:37下载
- 积分:1
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pwm
pwm inverter simulation using matlab used in power electronics
- 2011-10-23 18:44:28下载
- 积分:1
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DSP
任务:
1) 借助MATLAB画出误差性能曲面和误差性能曲面的等值曲线(参考PPT2.1第17页的两幅图);
2) 写出最陡下降法以及LMS算法的计算公式(取 );
3) 用MATLAB产生方差为0.05, 均值为0白噪音S(n),并画出某次采样得到的波形(即产生任意一个噪声随机序列);
4) 根据 2)中的公式,并利用 3)中产生的S(n),在 1)中的误差性能曲面的等值曲线上叠加画出采用最陡下降法以及LMS法时H(n)的在叠代过程中的轨迹曲线(参考PPT2.1第17页的右下图的曲线1和曲线2)。
5)用MATLAB计算并画出LMS法时 随时间n的变化曲线(对应S(n)的某一次的一次实现)和e(n)波形;
注意:某一次实现的结果并不能从统计的角度反映实验的结果 的正确性,为得到具有统计特性的实验结果,可用足够多次的 实验结果的平均值作为实验的结果。用MATLAB计算并画出 采用LMS法时,J(n)的100次实验结果的平均值随时间n的变 化曲线(即 生成随机噪声信号并计算结果,重复执行100次, 求平均结果)。
6)在 1)中的误差性能曲面的等值曲线上,叠加画出采用LMS法得到的100次实验中的H(n)的平均值的轨迹曲线;
(Task:
1 ) Draw with MATLAB error performance surface and surface contour error performance curve ( refer PPT2.1 two chart on page 17 )
2 ) Write the steepest descent method and the LMS algorithm formula ( take )
3 ) Using MATLAB to generate variance of 0.05 with a mean of 0 white noise S (n), and draw a particular sampling waveform ( ie, any noise generated random sequence )
4 ) based on 2 ) of the formula , and use 3 ) generated in S (n), in a ) the error performance curves superimposed on the surface contour plot using the steepest descent method and the LMS method when H (n) the iterative process in the trajectory curve ( refer PPT2.1 page 17 bottom right of the curves 1 and 2 ) .
5 ) using MATLAB LMS method is used calculate and draw the curve with time n (corresponding to S (n) of a first implementation of a ) and e (n) waveform
Note : in a first implementation of the results are not reflected from a statistical point of view of accuracy of the experimental results ,)
- 2013-11-08 20:09:06下载
- 积分:1
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R001.m
贝叶斯回归分析,以二维图像线性拟合为例,解决过度拟合问题(Bayes regression)
- 2013-12-13 13:13:25下载
- 积分:1
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adaptnulling
利用线性约束最小方差算法(LCMV),对等距线阵、柱面扇形阵、圆锥体阵列进行仿真,得到天线抗干扰方向图(Linear constrained minimum variance algorithm (LCMV), for uniform linear array, fan-shaped array of cylinders, cones array simulation, antenna interference pattern)
- 2014-05-07 18:25:42下载
- 积分:1
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matlabsourcecodeforFingerprint
matlab sourcecodeforFingerprint(sourcecodeforFingerprint)
- 2009-05-10 13:13:48下载
- 积分:1
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SumAbsDiff
code to get optical flow using sum of absolute differences matching
- 2010-11-26 06:15:26下载
- 积分:1
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FOURTH_ORDER_MUSIC
说明: 四阶累积量MUSIC算法和常规二阶MUSIC算法的性能与阵元数的关系(Fourth-order cumulant MUSIC algorithm and conventional second-order MUSIC algorithm performance and the relationship between the number of array elements)
- 2011-03-18 16:26:21下载
- 积分:1
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ybyb2
运用matlab/simulink创建一单机无穷大电力系统暂态稳定性分析(Transient stabilty analysis of one-machine infinite bus power system)
- 2020-06-29 16:40:01下载
- 积分:1
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bpsk
采用直扩序列的BPSK调制、解调例程序,可以直接使用(DSSS BPSK modulation, demodulation)
- 2015-02-04 21:39:36下载
- 积分:1