State space Representation and Transfer function don't match?

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Claudio Di Pietro
Claudio Di Pietro 2021-5-17
评论： Mathieu NOE 2021-5-18
Hi everyone,
I don't understand why the state space output doesn't match the transfer function model in Simulink.
I am sure that the PI controller is able to make the value converge to the one i need (30) in this case, but in the state space representation the output value doesn't converge to 30 and i don't understand why.
The values for the simulink models are the following:
J_M=0.00009;
B_M=0.01;
Lambda_PM=0.14294;
polepairs=3;
L=2.2e-4;
R=4.46;
a=-B_M/J_M;
c=1;
b=1.5*polepairs*Lambda_PM;
d=0;
The simulink file is attached, together with the results i get from it.
Thank you in advance :)
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Claudio Di Pietro
Claudio Di Pietro 2021-5-17
You are totally right Mathieu! I messed up the ss model parameters.
Merci beaucoup for the hint :)

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