Simulink Fault Controls

Use Simulink functions to model faults

You can use these Simulink fault controls in Simscape models to analyze, configure, and remove faults, behaviors, triggers, and conditionals.

Topics

Create and Manage Conditionals
Use conditionals to define conditions that you can use to trigger faults.
Fault Annotations
Use the annotations section of a component file to model faults in a custom component.

Functions

Simulink Fault Configuration Functions

`Simulink.fault.addConditional`	Add conditional to model (Since R2023b)
`Simulink.fault.addFault`	Add fault to model (Since R2023b)
`Simulink.fault.deleteAll`	Delete faults and conditionals in models (Since R2025a)
`Simulink.fault.deleteConditional`	Delete conditional from model (Since R2023b)
`Simulink.fault.deleteFault`	Delete faults from model element (Since R2023b)
`Simulink.fault.findConditionals`	Retrieve conditionals from model (Since R2023b)
`Simulink.fault.findFaultedElements`	Retrieve paths of model elements that have faults (Since R2023b)
`Simulink.fault.findFaults`	Find faults in model (Since R2023b)
`Simulink.fault.getFaultModels`	Return fault models associated with model (Since R2023b)
`Simulink.fault.updateReferences`	Synchronize model fault information files (Since R2023b)

Simulink Conditional Fault Functions

`addBehavior`	Add signal behavior to fault (Since R2023b)
`deleteBehavior`	Delete behavior associated with fault (Since R2023b)
`getAssociatedModel`	Retrieve name of model fault (Since R2023b)
`getBehavior`	Get path of associated Fault Subsystem block (Since R2023b)
`getFaultModel`	Get name of fault model (Since R2023b)
`getFaultInfoFile`	Get name of fault information file (Since R2023b)
`getSymbols`	Get symbols in conditionals (Since R2023b)
`getTriggeredFaults`	Return array of faults triggered by conditional (Since R2023b)
`openBehavior`	Open fault behavior (Since R2023b)

Simulink Fault Simulation 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)