[Scilab-users] Algebraic loop error in Xcos step response

[Nobuo HIZUME]

Dear Xcos users who are interested in step response:
Regardng above, I resend the mail. Please disregard the one which I sent last month.

I have recently tried step response of dc motor circuit in Xcos.
But to get the attached result, slight modification was necessary because original circuit 
can’t be simulated showing “Algebraic loop” error .
I needed to change one of the Gains(value=22) into first order lag(gain=22, time constant=0.1ms).
Regarding detail refer to the attached ZIP file. It contains original & modified circuits in Xcos, Scilab step response 
that was manually calculated from the Xcos block diagaram, and the simulation results are the same.

I’d like to know what “Algebraic loop” error means, and  is there another method to avoid the error?

Regards,
Nobuo HIZUME
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