Modeling Redundant and Non-Redundant Subsystems

This model shows how you can construct a model that includes redundant subsystems, non-redundant subsystems, and a system where two out of three components must be operating.

Each child component uses a simple failure mode with a failure rate of 2 times / 5 years. The Parent element has no failure modes. The redundant and non-redundant sub-systems are available inside of "Parent".

Note that if one wanted to reference peer elements, the methodology would be the same, but the connections would be made to the External Requirements AND node instead of the Internal Requirements AND node.

Non-Redundant Subsystem

This is a non-redundant subsystem, so it is directly connected through an RL Component node to the Internal Requirements AND node of the Parent element.

Redundant Subsystem

If either of these components are operating, the system can operate. These components are connected to the Internal Requirements AND node of the parent through an OR-gate.

2 out of 3 (N-Vote) Subsystem

If two of these three components are operating, the system can operate. These components are connected to the Internal Requirements AND node of the parent through a two-vote N-Vote Gate.

To Open the Model File:

1. Start GoldSim
2. Click on the File and select Open Example...
3. Browse to Reliability Examples
4. Select the file called Redundancy.gsm