Reliability
Remaining useful life (RUL): report an interval, not one number
Learn how RUL is defined, what each of three common approaches needs as data, and how to report P10, P50 and P90 values with a worked trend calculation.
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ML
Isolation Forest for sensor anomalies: how it works and where it misleads
Read flagged rows in a sensor table by their isolation score, understand what contamination does in the model, and see where the method misleads you.
ML
Multivariate process monitoring with Hotelling T² and SPE
Read correlated sensors through T² and SPE together rather than one statistic, interpret contribution plots, and learn where the method’s assumptions break.
Instrumentation
How to read an FFT spectrum: resolution, windows, peaks
After reading, you can compute frequency resolution for a vibration record, justify your window choice, and read spectral peaks as clues rather than diagnoses, using a worked example.
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All questions (52)What is a 4-20 mA signal, and why does it start at 4 mA, not 0?How do I find the byte order of a Modbus float value?Why does a PID loop oscillate?How is OEE calculated?What are Cp and Cpk, and how are they calculated?What is an FFT and what does it show in vibration analysis?How does Isolation Forest work for sensor anomaly detection?What is predictive maintenance, and how does it differ from preventive?
Before a bigger model, a better experiment.
01
Data
Units, source, version. Synthetic kept apart from field data.
02
Method
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03
Validation
Held-out data, measurable acceptance, an engineer’s decision.
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