how to fix invalid setting for fixed-step size in matlab?

Invalid setting for fixed-step size (2.5E-7) in model 'TAB_1_LOAD'. All sample times in your model must be an integer multiple of the fixed-step size.
Component: Simulink | Category: Model error
The sample time period (5.0E-8) of 'TAB_1_LOAD/powergui/EquivalentModel1/State-Space' is not an integer multiple of the fixed step size (2.5E-7) specified for model.

this is my problem how could i fix it?

[Rayane BENYOUCEF]

I'm having the same issue

[Dhanashri Changan]

same issue

Answer 1

[Walter Roberson]

You configured the Simulink solver as being a fixed-step algorithm instead as being variable-step. When you do that, then you cannot use any blocks that need a faster step than the step time of your algorithm.

In this particular example TAB_1_LOAD/powergui/EquivalentModel1/State-Space is configured to require a step time of 5E-8 which is 1/5th of the step time of the model itself, 2.5E-7 .

You would need to either increase the step time of the State-Space or else decrease the step time of the model itself