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to validate transfer function

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Chennam am 28 Mär. 2024
Beantwortet: Neelanshu am 15 Apr. 2024
i got transfer function from excel now i need to ensure that i got correct transfer function by giving some value as input
(25.03 / s + 0.4309 ) . this is the transfer function that will give square of input. but when i tried in simulink it is showing different value
  6 Kommentare
Chennam am 29 Mär. 2024
Verschoben: Sam Chak am 29 Mär. 2024
@Sam Chak this is my problem
Sam Chak
Sam Chak am 29 Mär. 2024
Hi @Chennam Below is the transfer function that has been created. It is designed to generate an output response based on an input signal. What would be the next MATLAB code to be inputted into the transfer function?
s = tf('s');
G = 25.03/(s + 0.4309)
G = 25.03 ---------- s + 0.4309 Continuous-time transfer function.

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Antworten (1)

Neelanshu am 15 Apr. 2024
Hi Chennam,
I understand that you are attempting to determine why Simulink is not displaying the corresponding output value of the sensor. You are inputting the sensor's data into the estimated transfer function, which was obtained with the assistance of the System Identification Toolbox.
As you mentioned, the sensor outputs the square of the input data, which can be described by the following equation: :
This system is non linear and transfer function is defined only for LTI systems. Therefore, the estimated transfer function will contain some inherent errors and will not exactly replicate the values.
You may refer the "Fit" report field in the Report property of the model to know about the "FitPercent" and "MSE". You may refer the documentation to know more about "tfest" :
Hope this helps.

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