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It is commonly called the "Remaining Useful Life Estimate" or by the acronmym "RULE". One performance measure of a predictive maintenance program is the spread of the distribution around the mean (i.e. around the RULE). This spread is quantified by the standard deviation.
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It is commonly called the "Remaining Useful Life Estimate" or by the acronmym "RULE". • One performance measure of a predictive maintenance program is the spread of the distribution around the mean (i.e. around the RULE). This spread is quantified by the standard deviation. • Continuous improvement in the RULE occurs over time as more experience is gathered. Not only is the RULE adjusted, but the spread narrows. • And narrows further. • The RULE improves • Confidence in prediction increases in a measurable way so that it may be reported as a CBM KPI. RULE = Remaining useful life estimate Improving RULE Increasing confidence Continuous improvement in predictive maintenance Conditional MTBF Is the well-known MTBF, except that it is measured from the current moment. That is, the moment when one needs to make an on-condition maintenance decision. Conditional Density Function t0 Working age Current time