健康监测传感器分析

Project One

Cable force estimation for on-site cable monitoring Known information:

The wavelength variations and the theoretical cable forces are given. The data are from cable factory construction site.

Question:

Please estimate the cable forces with wavelength measurements listed in the following table and answer further questions listed below.

Solution

首先，通过数据分析，我们要得到波长的变化值

为了建立索力与波长的关系，我们设前5个点作为标定值，如下表所示，因为波长的变化值与索力的变化值存在一定的关系。

Quation 1

为了比较不同hidden layers, 不同的neurons 我们设置了以下3种情况

(1)The number of hidden layer: 2

The number of neurons for each hidden layer:5 and 1

Transfer functions: purelin and purelin;

Other condition is the same

The Matlab procedure are as follows:

(2)The number of hidden layer: 2

The number of neurons for each hidden layer:10 and 1 Transfer functions: purelin and purelin;

Other condition is the same

The Matlab procedure are as follows:

(3)The number of hidden layer:3

The number of neurons for each hidden layer:5,5 and 1 Transfer functions: purelin and purelin;

Other condition is the same

The Matlab procedure are as follows:

误差对比表 R |

|

x x x 测真真

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Quation 2:

为了比较不同hidden layers, 不同的neurons 我们设置了以下3种情况

（1）第一种情况见上述NO.1，

（2）No4：The number of hidden layer: 1

The number of neurons for each hidden layer:5

Transfer functions: tansig and purelin;

The Matlab procedure are as follows:

(3)No.5 The number of hidden layer: 1

The number of neurons for each hidden layer:5 Transfer functions: purelin and logsig;

The Matlab procedure are as follows:

误差对比表 R |

|

x x x 测真真

-

通过上面误差对比，发现训练函数purelin 更好。

(3) No.1函数最好原因：~~~