Error while running simulink

Hi ,

I am trying to simulate a physical system (plant plus noise discrete TF model), when connected to a piezo stack actuator.

However , I keep receiving the following error.

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

Trouble solving algebraic equations in differential-algebraic system. Singular iteration matrix encountered with step size 0.1 at time 0.0. Consider providing more accurate initial conditions. If the problem persists, check the model structure and values of parameters."""" I have added an image of the same here.. Appreciate any clues on how to fix it!!!

Answer 1

[Sebastian Castro]

I think you might need Mass blocks, because if you have a force acting on a node with no mass to accelerate, then you get the error you're seeing. Think of F = ma if m = 0. How does the tool figure out what a is?

You definitely need a mass on the right side (R port of the Electromechanical converter). Not sure about the left side, as it depends on how that Piezo Stack block is implemented. Try that out too if a mass on only the right side still gives you the same errors.

- Sebastian

- Sebastian

[Fesmi Abdul Majeed]

Hi,

Thanks a lot for the suggestion . but as I suspected it didnt work and the same error recurrs,,, iam also not sure if the mass is required as the piezo basically converts the force acting on it to current/voltage.

i think the problem is perhaps in the ODE solver which I have used.... could it be?

regards,

[Sebastian Castro]

Definitely doesn't have to do with the solver.

Have you tried adding an Electrical Reference block to the electrical portion of your model?

- Sebastian

Answer 2

[mohsen teimoori]

Hello, How are you?

excuse me, I have one problem the same as top text about solver

why has this problem?

what is solve way? thank you

[alireza abbasi]

You need to add memory block in your loop

[ranj deepika]

1. how can ia add tghe memory block becouce i have same error