SIMULINK: Integrator error: Derivative input -24 at time xx is Inf or NaN

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Ilham Hardy 2014-11-3

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/161156-simulink-integrator-error-derivative-input-24-at-time-xx-is-inf-or-nan

评论： Sreeram Mohan 2014-11-5

Dear all.

During simulation, i get error message "Derivative input -24 of modelname at time xx is Inf or NaN". It point out to an integrator block (highlighted).

What strange is :

That the integrator block is inside an enabled subsystem. I put several scopes in input and ouput port of the integrator and output port of the enabled block (to see whether the calculation is triggered) and found out there is no value registered (enabled subsytem not triggered).
I even put display block and found no value were registered.

I also found in the answers section a similar question about this but is not exactly the same.

I was wondering whether this is also a known bug.

I used Simulink R2013b

Thanks