Fault Simulation

Simulate faults in models to analyze model responses

Use Simulink^® Fault Analyzer™ to simulate faults and conditionals. Conduct fault exploration by using the Multiple Simulations panel. Compare simulation results and inspect fault effects by using the Simulation Data Inspector.

Tools

Multiple Simulations	Run multiple simulations from the Simulink Editor (Since R2021b)
Simulation Data Inspector	Inspect and compare data and simulation results to validate and iterate model designs
Simulation Manager	Monitor multiple simulations and visualize the simulation data
Simulink Test Manager	Model and code testing in different execution environments, manage test suites, and analyze and report results

Functions

`activate`	Set fault as active fault (Since R2023b)
`Simulink.fault.enable`	Enable or disable faults on model elements (Since R2023b)
`Simulink.fault.injection`	Enable fault simulation for model (Since R2023b)
`Simulink.fault.isEnabled`	Determine whether model elements are enabled for fault injection (Since R2023b)

Objects

`Fault`	Create or modify faults in models (Since R2023b)
`Conditional`	Create or modify conditionals in models (Since R2023b)
`Symbol`	Create or modify symbols in conditionals (Since R2023b)

Simulink Test Manager Fault Configuration

`sltest.testmanager.FaultSet`	Create or modify fault set
`sltest.testmanager.SpecifiedFault`	Create or modify faults added to fault sets in tests
`sltest.testmanager.refreshFaults`	Refresh list of faults available in specified model in Simulink Test Manager

Topics

Add and Configure Faults Programmatically
Access and change fault properties directly in Simulink models using several programmatic options.
Simulate Models with Faults by Using the Multiple Simulations Panel
View effects of faults directly on Simulink models by running multiple simulations.
Add and Simulate Faults in System Composer Models
Add faults to System Composer™ components and simulate fault effects on component interactions.
Write and Run Tests that Inject Faults by Using the Simulink Test Manager
Run tests that inject faults by creating fault sets. (Since R2024a)
Use Best Practices While Modeling and Simulating Faults
Avoid model simulation errors caused by faults by using these best practices.

Featured Examples

Evaluate Fault Combinations on a Fault-Tolerant Fuel System

Simulate faults on a fault tolerant fuel system and analyze their effects in an FMEA.

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Conduct Fault Sensitivity Study on Warehouse Robot

Adjust fault behavior parameters to test robot brake system and verify results in an FMEA.

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Verify Fault Detection Logic in Aircraft Elevator Control System

Use conditionals to verify that fault mitigation logic deploys and verify controller behavior in an FMEA.

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