I used the "c2d" to discretize a transfer function initially but MATLAB automatically took it as zero order hold because I didn't specify any kind of hold. The result for the zero order hold is different from the expected result. I’m not trying to use any hold in my discretization. Is there a way I can do this?


Read the documentation https://www.mathworks.com/help/control/ref/c2d.html and figure what discretization method you want, since you clearly don't want zoh

sysd = c2d(sysc,Ts,method)

The following methods are available, and each will have its pros and cons:

  • zoh
  • least-squares

  • matched

  • tustin

  • impulse

  • foh

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