Sensitivity Analyzer

Explore design space and determine most influential model parameters

Description

The Sensitivity Analyzer app lets you explore the design space and determine the most influential Simulink^® model parameters using design of experiments, Monte Carlo simulations, and correlation analysis.

Using this app, you can:

• Select and sample parameters using design of experiments.

• Specify design requirements.

• Perform Monte Carlo simulations to evaluate the design requirement at selected parameter values.

• Analyze and visualize model sensitivity to parameters.

You can accelerate evaluation of design requirements using parallel computing and Simulink fast restart.

Open the Sensitivity Analyzer App

• Simulink Toolstrip: On the Apps tab, under Control Systems, click the Sensitivity Analyzer.

• MATLAB^® command prompt: Enter ssatool('modelname').

Examples

• What Is Sensitivity Analysis?
• Identify Key Parameters for Estimation (GUI)
• Design Exploration Using Parameter Sampling (GUI)
• Generate Parameter Samples for Sensitivity Analysis
• Evaluate Design Requirements
• Analyze Relation Between Parameters and Design Requirements
• Interact with Plots in the Sensitivity Analyzer

Programmatic Use

ssatool('modelname')

ssatool('modelname') opens the Sensitivity Analyzer app and creates a new session. The model must be open or on the MATLAB path.

ssatool(ssasession)

ssatool(ssasession) opens a previously saved Sensitivity Analyzer app session.

Version History

Introduced in R2016a

R2025a: Create parallel coordinates plot

Starting in R2025a, you can create a parallel coordinates plot in the Sensitivity Analyzer app. For more information, see Evaluated Result Parallel Plots.

R2025a: Open app using session interface object

Starting in R2025a, you can use the new sdo.SessionInterface object function to create an interface for the sensitivity analysis session. Using this interface, you can programmatically populate or modify data in the session. Then, you can launch the Sensitivity Analyzer app using the sdotool function with the sdo.SessionInterface object as the input argument.

R2024b: Sensitivity Analysis with Simscape

Starting in R2024b, you can directly select Simscape blocks and assign data in the Sensitivity Analyzer app. Before R2024b, you use a PS-Simulink Converter block to convert a physical signal into a Simulink output signal, select the converted signal, and then assign the data.

R2024a: Reference configuration set support

Starting in R2024a, Sensitivity Analyzer supports models that use reference configuration sets.

R2023b: Simulink Online support

Starting in R2023b, Sensitivity Analyzer is supported in Simulink Online™.

R2020b: Name changed

The Sensitivity Analysis tool is now the Sensitivity Analyzer app.

R2019b: MATLAB code generation for automatically scripting tasks

Starting in R2019b, you can generate MATLAB code to perform batch evaluation and code customization using the Sensitivity Analysis tool (Sensitivity Analyzer).

R2019a: Export plots

Starting in R2019a, you can export plots from Sensitivity Analysis tool (Sensitivity Analyzer) sessions. From a plot tab, use the Print menu to either print the plot or export the plot as a MATLAB figure.

R2018b: Support for model reference variables

Starting in R2018b, you can analyze parameters of Simulink model reference blocks using Sensitivity Analysis tool (Sensitivity Analyzer).