Since R2020a, the Linear Analysis Tool is called Model Linearizer app. The features of the app remain the same, only the name has changed. For more information on using the app, see Model Linearizer. The steps to linearize your Simulink model are:
1. Open the Linearization tab by clicking *Linearization Manager *in the Apps tab.
2. Now you can specify the portion of the model to linearize. Select a signal in your model. Then, in the Insert Analysis Points gallery, choose the type of analysis point (e.g. Input Perturbation, Open-loop Output).
3. After that, run the linear analysis by clicking the Model Linearizer button.
For a full example that shows the same linearization workflow in R2020a, refer to the following documentation link:
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