Derivative of state '1' in block 'PID_Aerot​echA3200/N​onlinear Plant /PL' at time 0.01 is not finite

• Derivative of state '1' in block 'PID_AerotechA3200/Nonlinear Plant /PL' at time 0.01 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)

can somebody help me ? what should i do ? thanksss

Answer 1

[Sai Sri Pathuri]

You can try changing the solver to Variable-step ode15s (stiff/NDF).

Or refer the following link to resolve the issue

https://in.mathworks.com/matlabcentral/answers/99084-why-am-i-receiving-error-messages-about-singularities-in-my-simulink-model?s_tid=answers_rc1-2_p2_MLT