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What does BlockSim’s new fault tree tracer do?



New in Version 11, BlockSim's fault tree tracer is a tool that helps you to visualize how fault tree subdiagrams fit into a parent fault tree. For example, if your team works on an assembly that’s represented in a particular fault tree, the fault tree tracer can help you understand how your assembly relates to the overall system.

Let’s say that you are interested in the potential failure of a brake mechanism within a robot manipulator system. Create a fault tree tracer by specifying that the "Robot Manipulator" fault tree is the top level diagram, and the "Brake" fault tree is the subdiagram of interest:

Select data sources for fault tree tracer

Initially, the tracer shows just the direct path between the subdiagram of interest and the top of the top level diagram. When you select Show Parent Diagram Names on the control panel, each block shows the diagram it’s found in.

For example, in the following tracer, you can see that the "Brake" fault tree is located below an AND gate within the "Jam or Collision" fault tree, and that fault tree is located below an OR gate in the "Robot Manipulator" fault tree.

Fault tree tracer

To see how the brake mechanism fits into the entire system, select Show Blocks Outside of Path on the control panel and refresh the tracer. To help you find the brake mechanism, click Trace Path of Interest on the control panel.

Fault tree tracer

To see the contents of the "Brake" fault tree in the context of the larger system, select Expand Subdiagrams on the control panel, refresh the tracer and again click Trace Path of Interest.

Fault tree tracer