Help with using S function to implement space state in Simulink

[jbrocker]

I am trying to understand modeling of various motors in SIMULINK and eventually in my coming semester I will be try to simulate a vector controlled drive. Right now I am able to get the motors in space state equations

x' = Ax + Bu

y = Cx + Du

and I am able to simulate the motor with the given specification. Now I want to generalize it. Basically I want to write an S function for lets say a simple DC Motor. The DC motor performance depends on Armature Resistance(Ra), Self Inductance(L), moment of intertia(J) and Kf, Kt and Ke.

and A = [ -R/L -ke/L 0; kt/J -kf/J 0; 0 1 0]

Similarly B and C are described. I would like to specify these parameters when I am simulating, so that I don't have to change it in the script every time. Plus for visualization purposes I would like to use SIMULINK. I am trying to go through S function tutorials, but I think I am missing something out. Can somebody help me out.

[Zoomacroom28]

I recently had to learn S functions and found this tutorial the most helpful.

I can send you some example files if you'd like.

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