Discrete to continuous in Simulink.

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Nguyen Hieu
Nguyen Hieu le 25 Août 2022
Commenté : Paul le 29 Août 2022
Hi, I use PID controller to control the input voltage (Ui) of the servo valve to adjust the spool displacement [-10< Ui <10 (V)].
I coded Ui =[-10:0.01:10]; and Simulink show the error: "Encountered unknown exception". So i think that discrete value from Ui can't calculate for the continuous system ( have PID controller and Intergator). It has any block or code to make Ui become continuous? Thank you for help.
  5 commentaires
Paul le 29 Août 2022
Apparently Ui is supposed to be scalar, but its coded as a 2001-element vector. Why is it coded as a vector?

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Réponses (1)

Abderrahim. B
Abderrahim. B le 25 Août 2022
Use d2c and/or c2d functions in a MATLAB function !
Check out the link below, some others methods to do this conversion are listed there.
Note that most of these methods require Control System Toolbox.
Hope this helps
  2 commentaires
Abderrahim. B
Abderrahim. B le 29 Août 2022
d2c and c2d accept model object as input, will not work in your case. To convert a vector(discrete) to continuous use quantizer and zero-order hold blocks.

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