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On-line prediction remaining useful life for ball bearings via grey NARX

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Figure

Fig. 1. Health index from the same type bearing and the same test conditions:
Fig. 2. Architecture of NARX: a) open loop architecture, b) close loop architecture
Fig. 4. Ball bearing test rig: a) PRONOSTIA, b) high speed train traction motor bearing test rig  Firstly, PRONOSTIA dataset has been used in many remaining useful life prognostic studies  [7,  9,  11,  15]
Fig. 5. Health index of the bearing 1-1: a) health index, b) moving average (
+5

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