Derivative of state '1' in block 'prot_2/LTI System/Internal' at time 0.50009 is not finite?

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SimTec
SimTec 2019-11-20
编辑： SimTec 2019-11-20
Hi!
after deriving tthis trasnfer function I got this error in simulink, my stap size start at 0.5s:
An error occurred while running the simulation and the simulation was terminated
Caused by:
  • Derivative of state '1' in block 'prot_2/LTI System/Internal' at time 0.50009 is not finite. The simulation will be stopped. There may be a singularity in the solution. If not, try reducing the step size (either by reducing the fixed step size or by tightening the error tolerances)
  • my transfert function is:
  • -2.772e-15 s^3 - 5.898e-10 s^2
  • ---------------------------------------------------------
  • 1.241e-29 s^4 - 8.436e-17 s^3 - 7.033e-08 s^2 - 0.01496 s

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