I have this error: Derivative is at time ... is not finite, fixed by saturation block but I want to remove this block

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chuyen hoangcao 2021-6-9

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https://ww2.mathworks.cn/matlabcentral/answers/852060-i-have-this-error-derivative-is-at-time-is-not-finite-fixed-by-saturation-block-but-i-want-to

I'm having a problem with this derivative. The problem is that if I remove the saturation block (circled in the image), then simulink immediately runs very slow or doesn't work, or there is an error, it is a "derivative of state '...' in block '...' at time 4.0 error is not finite". I want to remove this block but don't know how, because putting it in, although it works, affects the results of the model. Please help me.