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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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MATLAB-TIME
《MATLAB在时间预测分析中的应用》 细致讲解了多种时间序列分析方法AR MA 等，并有源代码。( MATLAB time predictive analytics application careful to explain a variety of time series analysis method AR MA, etc., and source code.)
- 2014-11-24 09:59:28下载
- 积分：1
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linearholdwithfeedback
this mdl explains the working of the linear hold circuit
- 2010-02-01 14:25:39下载
- 积分：1
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wz1
说明： 考虑幅值谱与相位谱的人造地震动模拟与反应谱拟合
我国对《建筑结构抗震规范》进行了修订，将设计反应谱周期由原来的3秒延长到现在的6秒。反应谱周期的延长。
本程序以新规范反应谱作为目标谱，采用三角级数迭加来模拟地震动加速度。(consider amplitude spectrum and phase spectrum of the artificial seismic simulation and pattern fitting response to China's "structural seismic code" the amendment to the design spectrum cycle from three seconds to extend the current six seconds. Response spectrum cycle extension. The new procedures to regulate spectrum as the target spectrum, the use of triangular series superposition to simulate vibration.)
- 2006-04-22 09:44:09下载
- 积分：1
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fe_sdofID_2
Purpose:
build the ID array of system dofs to apply displacement constraints
Synopsis:
[csdof,sid]=fe_sdofID(discons,ndof,nnode)
Variable Description:
csdof - the number of system dofs after constraints applied
sid - ID matrix of system dof formatted as nnode*ndof
discons - matrix record the node of displacement constrain
ndof - number of dofs per node
nnode - number of nodes in system(Purpose:
build the ID array of system dofs to apply displacement constraints
Synopsis:
[csdof,sid]=fe_sdofID(discons,ndof,nnode)
Variable Description:
csdof- the number of system dofs after constraints applied
sid- ID matrix of system dof formatted as nnode*ndof
discons- matrix record the node of displacement constrain
ndof- number of dofs per node
nnode- number of nodes in system)
- 2011-06-21 10:05:03下载
- 积分：1
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meitiandizhe
一篇有关煤田与地震相关性的文章，希望对大家有帮助(One relating to coal and seismic correlation article, I hope to help everyone)
- 2015-03-26 10:01:37下载
- 积分：1
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MIMO_OFDM_MATLAB_program
MIMO OFDM wireless communications MATLAB 的源程序，包含了QPSK_demapper.m QPSK_mapper.m QPSK_slicer.m
- 2014-07-29 12:05:16下载
- 积分：1
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gaotonglvboqi
基于Matlab的高通滤波器的设计源码，可以通过此代码，模拟高通滤波器的设计。并附有仿真后的图像。(Matlab-based high-pass filter design source code, this code can simulate the high-pass filter design. Together with simulation, the image.)
- 2010-06-30 09:55:59下载
- 积分：1
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fhss
frequency hopping spread spectrum
- 2009-11-20 02:04:51下载
- 积分：1
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L-M-neural-network
L-M神经网络在matlab开发环境中的实现实例，有利于初学者学习与掌握(L-M neural network in the matlab environment development to achieve the example, be helpful for beginners to learn and master)
- 2012-05-03 18:21:08下载
- 积分：1
