navi_s
Junior Member level 1
Hello,
I have an issue, trying to convert an S-transfer function to Z-domain. What the problem is:
I'm using c2d Matlab function. When conversion is done i type "step" in command window to both transfer function and results are identical.
But if I go to Simulink and draw both transfer function and apply signal source "Step" I receive different results.
Why do I have this difference.
Here is more detail: The Transfer Functions are:
0.0114
-------------------------------------
6.25e-007 s^2 + 0.0001253 s + 0.00018
and
4.515e-005 z^2 + 9.03e-005 z + 4.515e-005
-----------------------------------------
z^2 - 1.98 z + 0.9802
Best regards and thanks for answers[/img]
I have an issue, trying to convert an S-transfer function to Z-domain. What the problem is:
I'm using c2d Matlab function. When conversion is done i type "step" in command window to both transfer function and results are identical.
But if I go to Simulink and draw both transfer function and apply signal source "Step" I receive different results.
Why do I have this difference.
Here is more detail: The Transfer Functions are:
0.0114
-------------------------------------
6.25e-007 s^2 + 0.0001253 s + 0.00018
and
4.515e-005 z^2 + 9.03e-005 z + 4.515e-005
-----------------------------------------
z^2 - 1.98 z + 0.9802
Best regards and thanks for answers[/img]