Fault Tree Analysis
R2026bUse the Safety Analysis Manager to perform tree-based safety analyses like Fault Tree Analysis (FTA). Link the artifacts in your fault tree documents to model elements and faults, and design your tree analysis by writing callback scripts in MATLAB®.
Apps
| Safety Analysis Manager | Create and edit documents for safety analyses (Since R2023b) |
Functions
Objects
ChangeInformation | Detected changes in Safety Analysis Manager (Since R2024b) |
DocumentFlag | Flags in Safety Analysis Manager (Since R2023b) |
CutSet | Set of events causing failure represented at gate (Since R2026b) |
EvalConfig | Evaluation configuration for fault tree document (Since R2026b) |
Event | Event in fault tree documents (Since R2026b) |
FailureModel | Event failure model in fault tree document (Since R2026b) |
FailureModelParameters | Event failure model parameters (Since R2026b) |
FailureProperties | Calculated failure properties of fault tree artifact (Since R2026b) |
FaultTree | Fault tree in fault tree document (Since R2026b) |
FaultTreeDocument | Fault tree document in Safety Analysis Manager (Since R2026b) |
Gate | Gate in fault tree documents (Since R2026b) |
ImportanceMeasures | Importance measures at tree element (Since R2026b) |
Parameter | Event failure model parameters (Since R2026b) |
TransferGate | Transfer gate in fault tree document (Since R2026b) |
Topics
- Create Fault Tree Events
Create the events and the failure models that calculate event unavailability and frequency throughout the fault tree. (Since R2026b)
- Create Fault Tree Gates
Gates calculate failure properties, such as unavailability and frequency, from input events and propagate them up to the top-level gate in the fault tree. (Since R2026b)
- Organize Fault Trees in Fault Tree Documents
Group related fault trees in documents, reorder them, and use transfer gates to split subtrees into standalone fault trees that reference each other. (Since R2026b)
- Evaluate Fault Tree Documents
Evaluate fault trees to calculate failure probability, cutsets, and importance measures at each gate. (Since R2026b)
- Copy Fault Tree Artifacts
Duplicate fault tree artifacts in fault tree documents. (Since R2026b)
- Link Safety Analysis Manager Fault Tree Artifacts to Requirements, Tests, and Faults
Link fault tree events, gates, and failure models to requirements, tests, faults, and conditionals. (Since R2026b)
- Create and Register Templates in the Safety Analysis Manager
Create templates from existing documents to reuse common spreadsheet structures and settings across projects.
- Write Callbacks to Analyze Safety Analysis Manager Fault Tree Documents
Use MATLAB to define code that executes automatically or manually to analyze fault tree documents in the Safety Analysis Manager. (Since R2026b)
- Create and Select Custom Callbacks for Safety Analysis Manager Fault Tree Documents
Specify callbacks to execute when analyzing fault tree documents. (Since R2026b)
- Export Fault Trees to PDFs
Export fault trees or individual trees as graphics in PDFs. (Since R2026b)
- Track Changes in Safety Analysis Manager Fault Tree Documents
Identify and manage changes to links and linked artifacts in Safety Analysis Manager fault tree documents contained in projects. (Since R2026b)
Featured Examples
Create and Evaluate Fault Trees Programmatically
Use the fault tree API to create a fault tree, define failure probabilities, evaluate the tree, sweep an event probability, and plot the results.
Modularize Fault Tree Documents
Define sub trees in separate fault tree documents to improve fault tree segment maintainability and reduce computational requirements.
Test Fault Mitigation Logic by Using Fault Tree Analysis
Design fault mitigation logic by using a fault tree and verify its implementation in your design.
Verify Fault Mitigation Logic by Using Fault Tree Analysis and Simulink Test
Run test cases in a fault tree document to validate model design.
