|
Equivalent Lambda/MTBF |
|
|
|
|
Equivalent Lambda/MTBF |
|
|
Equivalent Lambda/MTBF
|
Equivalent Lambda/MTBF |
|
|
|
|
Equivalent Lambda/MTBF |
|
|
Equivalent (Effective) Lambda or Effective MTBF is calculated according to formulas and assumptions described below.
Calculation is allowed only with following limitations:
| • | Repairable Configuration (all elements with repair) |
| • | Failure Rate distribution - only "Exponential" |
| • | Repair Rate distribution – only "Exponential" |
| • | K-out-of-N elements: |
| • | Load = 100 (active redundancy) |
| • | No Switch |
| • | No Split |
Effective λ (FR) equations approximations:
Configuration |
λ |
µ |
|---|---|---|
|
λ = λa + λb |
µ = (λa*µa+λb*µb)/(λa+λb) |
|
(1) |
µ = (λa*µa+λb*µb)/(λa+λb) |
|
(2) |
µ |
References (1) and (2) refer to RIAC System Reliability Toolkit, page 394.
To calculate the effective MTBF, execute the RBD report generation and select the corresponding checkbox on the report settings screen:
