Online Health Management for Complex Nonlinear Systems Based on Hidden Semi-Markov Model Using Sequential Monte Carlo Methods

Table 6

RUL prognostic comparison with 4 methods.

Actual RUL	HSMM (joint multisteps)	Relative error	HSMM (multisteps)	Relative error	HSMM (one-step)	Relative error	HSMM	Relative error
30.00	29.398	2.0067	29.3980	2.0067	29.3980	2.0067	30.2558	0.8527
26.00	25.2142	3.0224	28.5854	9.9438	27.8536	7.1291	29.9643	15.2473
22.00	22.5172	2.3507	26.0616	18.4618	25.3297	15.1352	29.7954	35.4336
17.00	17.5134	3.0199	15.3897	9.4721	18.3274	7.8085	19.4981	14.6947
15.00	16.0776	7.1837	13.7082	8.6119	17.6251	17.5009	19.2081	28.054
12.00	13.1625	9.6878	13.4892	12.4097	15.4476	28.7302	18.8666	57.2217
11.00	12.9667	17.879	13.3303	25.2653	14.3096	30.0869	10.2471	6.8445
9.00	9.7866	8.7401	13.2352	19.4156	13.5290	50.3224	10.0291	11.4344
5.00	6.0558	21.1166	8.0292	35.8459	7.0224	40.4490	9.7675	95.35
MAPE	8.3341 (%)		15.7147 (%)		22.1298 (%)		29.4592 (%)