Derivative input 1 of'test ces aqc/transfer fcn1' at time 0.1649673124062185 is Inf or NaN. stopping simulation. There may be singularity in the solution. If not, try reducing step size.................

how to get rid of this problem.....and how to reduce fixed step size or by tightening the error tolerences.........??????

Answer 1

[Sabin]

Check this similar question:

https://www.mathworks.com/matlabcentral/answers/99084-why-am-i-receiving-error-messages-about-singularities-in-my-simulink-model

You can also go directly to this blog post for more tips:

https://blogs.mathworks.com/simulink/2024/07/22/derivative-of-state-1-in-block-x-y-integrator-at-time-0-55-is-not-finite/