Downloaded from https://www.everyspec.com ADS-79D-HDBK E.4.4 Gear condition indicators. The following CIs (Table E-III) are laboratory proven on gear test stands operated by various commercial and Government organizations. 25 25 Vachtsevanos, G., F.L. Lewis, M. Roemer, A. Hess, and B. Wu. Intelligent Fault Diagnosis and Prognosis for Engineering Systems. Wiley & Sons: New York, 2006. 107 TABLE E-III.
Gear condition indicators Residual Kurtosis FM4 & FM4* Residual RMS Energy Ratio Sideband Modulation M6A & M6A* Narrowband Crest Factor M8A & M8A* Gear Distributed Fault NA4 & NA4* G2-1 NA4 Reset Residual Peak to Peak Amplitude Modulation Energy Operator Phase Modulation Sideband Index Instantaneous Frequency Sideband Level Factor NB4 & NB4* FM0 NP4 *Asterisk used to indicate algorithm name