Formulas and calculation basis


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Formulas and calculation basis


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Interval based statistics

MTTR Calculation

 

 

Interval based statistics

20220719_interval_Statistics_folie_1

Figure 1 - Interval based statistics

 

 

20220719_interval_Statistics_folie_2

Figure 2 - Interval based statistics

 

 

MTTR Calculation

With the parameters availability and MTTR, random distributions for disturbance durations (Erlang function) and distance of disturbances (negative exponential function) are automatically determined in the background

Calculation example:

20211222_MTTR_verfuegbarkeit

Figure 3 - Example

 

The general formula is:

Availability = MTBF : ( MTBF + MTTR)

 

Level related to working time (when the object is working on a part)

With

MTTR: Mean-time-to-repair

MTBF: Mean-time-between-failures

 

 


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