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work
在matlab环境下的二维双曲型和抛物型偏微分方程的数值解法(Matlab environment in two-dimensional hyperbolic and parabolic partial differential equations numerical solution)
- 2007-11-11 20:47:43下载
- 积分：1
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用Welch法进行功率谱估计
考虑L的三个不同值：L＝256（3个数据段），L＝128(7个数据段)和L=64（15个数据段）。各自的谱估计图如上图所示。可以明显的看到，加窗明显的减小了频谱上的假谱峰，但也更加进一步平滑了谱峰。所以，对于L＝64的情况，在ω＝0.8π的谱线可以很确定的辨认，但是那两个靠近的谱峰不容易区分。对于L＝128的情况，这种情况提供了在分离和检测间最好的均衡。当然，对于在L＝256时的情况，效果是更好的，能够从谱估计图上明显的分辨出三条谱线的存在以及它们幅度关系的强弱。 除了Welch法外，还可以采用对多个周期图求平均的功率谱估计方法的其他方法如Bartlett法等等，在功率谱估计上也能取得较好的结果。(consider three different values : L = 256 (3 data), L = 128 (7 data) and L = 64 (15 data). Their spectral estimation map as shown in Fig. It is clear to see that increase significantly decreasing window of the spectrum of false peaks, but much more to further smooth the peaks. Therefore, L = 64, in the case = 0.8 spectrum can determine the identification, but that the two peaks around is not easy to distinguish. L = 128 for the situation, which provided the separation and detection among the best balanced. Of course, L = 256 in the case, the effect is better, from the spectral estimation map clearly distinguish between the three lines of the existence and their relationship to the rate of strength. In addition to Welch law, but also can be used to map multiple cycle for the average power)
- 2005-07-12 11:18:13下载
- 积分：1
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11
说明： 该电路由一片四双向模拟开关集成电路CD4066为核心构成。每个电路内部有四个独立的能控制数字或模拟信号传送的开关。当水箱无水时，由于180K电阻的作用，使四个开关的控制端为低电平，开关断开，LED 不发光。随着水位的增加, 由于水的导电特性，使得IC的13脚为高电平，S1接通，LED1点亮。当水位逐渐增加时，LED依次发光指示水位。水满时， LED4发光， 显示水满。同时T1导通， B发出报警声，提示水已满。不需要报警声时，断开开关K即可。 (The circuit consists of a four-way analog switch integrated circuit CD4066 core composition. Within each circuit to control four separate digital or analog signal transmission in the switch. When the tank water, the role of the 180K resistor, so that the four low-side switch control, switch off, LED does not light. As the water level increases, the electrical properties of water, making the IC' s 13 feet high, S1 connected to, LED1 lights up. When the water level gradually increased, LED turn light level indication. Is full of water, LED4 LED display full of water. At the same time conducting T1, B alarm will sound, indicating that the water is full. Do not need to sound the alarm when the disconnect switch K can be.)
- 2011-03-11 11:41:51下载
- 积分：1
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MATLAB
说明： 本例是线性规划单纯形法matlab实现程序，朋友们如有需要请下载。(This example is linear programming simplex method matlab implementation procedures, if necessary, download friends)
- 2011-04-06 17:06:21下载
- 积分：1
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emdyl
EMD分解的matlab代码，克服了传统筛选停止准则中的分母为零的问题(Empirical Mode Decomposition based on matlab)
- 2012-04-07 19:46:27下载
- 积分：1
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LMS
主要用MATLAB实现LMS算法，该算法用途极广，但是核心代码基本上和所上传内容一致。(Main LMS algorithm in MATLAB, the algorithm uses a very wide, but the core code and the upload is basically consistent.)
- 2011-11-12 11:13:40下载
- 积分：1
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PIDcontrol
一个数字PID控制的matlab的m文件，希望能够与各位控制领域的朋友多多交流，以求共同进步！(A digital PID control matlab m-files, hoping to control the field with my friends a lot of exchanges, in order to make progress together!)
- 2007-08-01 17:04:30下载
- 积分：1
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JPEG_Simulink
JPEG compression Simulink model
- 2009-10-18 17:46:48下载
- 积分：1
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Three_step_search_Algorithms_papers
Frame interpolation, frame rate up-conversion
(FRUC), motion estimation, motion-compensated frame interpolation
(MCFI), motion-compensated temporal frame interpolation
(MCTFI), predictive search, true-motion, video processing
- 2014-10-04 13:23:11下载
- 积分：1
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irisannprot
that file is very help full
- 2009-09-26 17:01:41下载
- 积分：1
