Dear researchers,
I want to use a matlab code to calculate building desplacement velocity and accleration (ender earthquake), then send the displacement and velocity to a MR damper model in Simulink and get a F force from the MR damper and return that force back to the structure to get a new displacement and velocity and send them again to the damper and get a force F and again and again. For each time step for the earthquake duration.
how can I do that ?
PS: the Matlab code is working correctly and the simulink for MR damper also but how to combine both ?
A quick idea: You could run your simulink model with sim('...') from matlab and exchange values via workspace variable (from matlab to simulink) and a simout block (from simulink to matlab).
However, this solution could be very slow, assuming that both the matlab and simulink part run only for a short period of time. Could you not decide to go either completely with simulink or completely with matlab, whichever is the more complex part?
Patrik
Dear Patrik
thank you for the quick replay, the problem is that the command simOut = sim ('model') is not working in Matlab interation code !
can you propose any other solution please ?
best regards
That is strange. Do you get any error message?
if you type 'simulink' - does simulink start up?
And what about changing everything to simulink or to matlab only?
Dear patrik,
I was traying to creat a simulink model for a Multi degrees of fredoom structure then, creat a simulink model for a MR damper then submit the MDOF structure to an erathquake and use the MR damper to reduce the vibration, that was not working, when i came to MNIT Malaviya national institute of technology they propose to me the nermwark beta methode and I programe it on matlab because of the iteration in it, but my MR damper was already done in Simulink so I'm traying to wine some time ! by using the simulink model and the matlab code
sorry for my bad english, my frensh is better
best regards dear Patrik
PS: i will provide you with the error message in the next comment
this is the error messege I'm receving :
Error using modalanalysis (line 116)
Error due to multiple causes.
Caused by:
Error using modalanalysis (line 116)
Error evaluating parameter 'VariableName' in 'MRDAMPER/From Workspace'
Error using modalanalysis (line 116)
CAT arguments dimensions are not consistent.
Error using modalanalysis (line 116)
Error evaluating parameter 'VariableName' in 'MRDAMPER/From Workspace1'
Error using modalanalysis (line 116)
CAT arguments dimensions are not consistent.
From the above it seems
- your matlab script is 'modalanalysis'
- you call the simulink model MRDAMPER on line 116
- ** the simulilnk model is not able to get a value for "VariableName"
- then the matlab script gets some illegal answer back and the complains.
The line marked with ** seems to be the key, so when you call your simulink model from matlab a variable name seems to be wrong or undefined.
So - this look just like some debugging. Please try to read error messages carefully first.
it was the demension of time vector and desplacement verctor who was not the same, but also, it was a problem with the integrator in my simulink model, I think that i correct the problem thank you very much dear patrik
Article Multi-site modeling and prediction of annual and monthly pre...
Most of the toolboxes offer a simulink block. Or to use a fcn block to store it
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