Caused by: Nonlinear iteration is not converging with step size reduced to hmin (1.07322E-15) at time 0.302084. getting this error could any help me out?

An error occurred while running the simulation and the simulation was terminated

Caused by: Nonlinear iteration is not converging with step size reduced to hmin (1.07322E-15) at time 0.302084. Try reducing the minimum step size and/or relax the relative error tolerance.

Thanks for the help in advance. Appreciate your efforts.

Answer 1

[Harshit Gupta]

Hi Shubham,

As per my understanding, you are getting the following error:

Nonlinear iteration is not converging with step size reduced to hmin (1.07322E-15) at time 0.302084. Try reducing the minimum step size and/or relax the relative error tolerance.

Please refer to the below pointers for more information about the same:

• This error message means that one of the signals in your model is diverging to plus or minus infinity or is otherwise changing too rapidly based on the solver settings.
• This means that with these settings, the solver is unstable for the equations represented by the model. It is a stiff model that requires more stability for the solver.
• One way to resolve this error is to reduce the maximum order for your model.
• You can refer to the following documentation link for more information on how to reduce the order of a model: https://www.mathworks.com/help/releases/R2022a/ident/ug/use-state-space-estimation-to-reduce-model-order.html