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receiving error when try to Linearize a single Simscape block (e.g. Engine) from a Simscape Model.

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SAnbaran
SAnbaran 2018-12-23
关闭： MATLAB Answer Bot 2021-8-20
Greetings,
I would like to model a Simscape model. The model is an Engine-based powertrain with ICE+Torque converter+ CVT+Vehicle Body.
Initially tried to find steady-state operating points of the system, then use it to linearize it, and ultimately tune PI for Engine spped control. I could not perform this task successfully.
Now, I intend to linearize each block using "Linear Analysis Tool". But I receive this error. The screenshot of the error is attached to this message.
Would you please explain this error? Thank you.
engine error.png
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SAnbaran
SAnbaran 2019-10-23
Do not try this. it's not gonna work if you are dealing with simscape model. use linearization at snapshot, instead.
I did it and tunes PI. It works fine.
https://www.mathworks.com/matlabcentral/answers/467606-why-i-can-t-tune-design-pid-for-a-vehicle-modelled-with-simscape

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