Illegal use of a matrix or vector type where a scalar was expected. ERROR IN SIMULINK

Hi, I am working on a chart block in SIMULINK where my imput is a variable over time. State Of Charge (SOC) of a battery.

When I try to run the model the following error pops up: Illegal use of a matrix or vector type where a scalar was expected.

This message refers to an object in '[SOC<=40]'.

Does anybody know how to fix this? Here I leave some images

Answer 1

[Shubham Khatri]

Hello,

To my understanding it looks like you are trying to feed an array to stateflow input. The array when fed to a stateflow fiagram will result in an boolean array.

For example

SOC=[20 40 60 120];
ans= SOC >= 40

The output will be [0 1 1 1] rather 1 or 0. That is why you are getting this error. You need to make the stateflow input a scaler with respect to time steps.

Hope it helps