Errror: Brace indexing is not supported for variables of this type. No results

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I am trying to model a cell in Simulink instead of simscape battery using mathematical model approach. Also, I am trying to perform parameter estimation on the model to get the results I want. But while doing the parameter estimation the model is running in iteration but with a error.
I can see the model is running in interation when I start the Estimation for calculating OCV but the graph is not plotted. In the experiment setting I have given the simulink ouput block and the measure value, but didn't mentioned the initial values and input values as it was optional. Also, as shown in figure 2 I have mentioned the parameters to be estimated.
How do I solve this error?

Answers (1)

Javier Gazzarri
Javier Gazzarri on 20 Jan 2023 at 16:34
Hello Himanshu,
Thank you for your question.
I believe your current sign convention is reversed. Could you please try changing the current sign with a -1 gain?
Thanks,
Javier

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