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pid
以中等纯度的精馏塔为研究对象，考虑到不等分子溢流的影响和非理想的汽液平衡，可以得到塔顶产品轻组分含量Y与回流量L之间的传递函数为：
其中由于现场环境干扰，输出带有测量噪声是（0，1）的正态分布序列，它的方差为ɑ=0.5。由于输出中带有很大的噪声信号，故将数字滤波技术中常见的低通滤波器由于偏差控制，滤掉其中的噪声信号，然后在对其进行PID计算，得到实际的控制量。在该方法在噪声较强的环境下，可以得到较好的控制效果。
控制要求：
1、 采用带低通滤波器的增量式PID将塔顶轻组分含量控制在0.99
2、 用ISTE法整定PID参数
3、 在控制过程中，到150周期加入幅度为-20 的阶跃干扰，在第300周期干扰消失。分析PID参数的抗干扰性。
(Medium-purity distillation column, taking into account ranging from molecular overflow and non-ideal vapor-liquid equilibrium, the transfer function between the light component content of the top product Y and the back flow L can be obtained as:
Because the field of environmental interference, output with the measurement noise is a normal distribution (0,1) sequence, its variance ɑ = 0.5. As with a lot of noise in the output signal, it will be common in low-pass filter in the digital filtering techniques due to the bias control, filter out the noise signal, then its PID, the actual amount of control. In the strong noise environment, you can get better control effect.
Control requirements:
1, using the incremental PID with a low-pass filter to the top of the tower content of light components in the 0.99
2, the method of ISTE tuning PID parameters
3, in the control process, to 150 cycles join the range of-20 step disturbance, disappearance of interference in the first 300 c)
- 2012-04-07 07:27:43下载
- 积分：1
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LMS
说明： 最小均方濾波器是一類可通過最小化誤差訊號之均方值而修正濾波器係數，以類比所需理想濾波器的自適應濾波器，其中作為修正依據的誤差訊號為理想參考訊號與實際輸出訊號之差。該種濾波器所用之最小均方法只以當前之訊號誤差值為準進行修正，是一種隨機梯度下降法。最小均方法係由斯坦福大學的Bernard Widrow教授及他的首位博士班學生Marcian Hoff於1960年提出。最小均方濾波器屬於常見的自適應濾波器種類之一。(The minimum mean square filter is an adaptive filter that can correct the filter coefficients by minimizing the mean square value of the error signal to analogize the desired ideal filter. The error signal used as the correction reference is the ideal reference signal and the actual output. The difference between the signals. The minimum averaging method used in this kind of filter is only corrected based on the current signal error value, which is a stochastic gradient descent method. The minimum mean method was proposed in 1960 by Professor Bernard Widrow of Stanford University and his first PhD student, Marcian Hoff. The least mean square filter is one of the common types of adaptive filters.)
- 2019-02-21 22:43:06下载
- 积分：1
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photonicscrystal
含有多缺陷的光子晶体中的局域缺陷模,利用matlab编程，希望对大家有用(Photonic Crystal with Multiple Defects in the local defect mode, using matlab programming, we want to be useful)
- 2010-07-19 07:45:29下载
- 积分：1
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gabor
This function produces a numerical approximation to 2D Gabor function
- 2010-03-08 01:13:20下载
- 积分：1
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DSP_MATLAB
说明： 本资料中包含了许多适用于matlab初学者的程序，资料中的程序适用于研究生的数字信号处理。(This information includes a number of procedures applied to matlab for beginners, information for graduate programs in digital signal processing.)
- 2011-03-08 16:23:20下载
- 积分：1
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FFT_filter
利用FFT进行滤波，可以选取任意频带数据，并恢复响应频带数据的时程信号(Using FFT filtering, can choose any bands data, and restore the time history of response frequency band data signal)
- 2021-04-08 11:59:00下载
- 积分：1
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HarmonicsANDapfft
电力系统谐波监测相关的文章其中的fft和apfft之间的对比很有参考意义(Fft and apfft contrast between the power system harmonic monitoring related article which is very useful)
- 2014-12-11 11:20:01下载
- 积分：1
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rddata
用matlab读取txt格式的心电信号的一个m函数，很有用的(atlab read TXT format of ecg signals a m function, very useful
)
- 2012-01-05 09:53:14下载
- 积分：1
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axesprop
Programa para calculo
- 2014-01-13 22:34:29下载
- 积分：1
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beamforming
介绍了近场波束形成的实现方法 以及利用三维扫描得到目标方位的方法(Describes the method as well as near-field beam forming method using three-dimensional orientation of the scanned target)
- 2020-11-18 10:29:39下载
- 积分：1
