Research Article
Hidden Semi-Markov Models for Predictive Maintenance
Table 5
Average absolute prediction error (
) of the RUL estimation, expressed in seconds.
| (a) Condition 1 |
| | Test Bearings | | | |
| | Bearing1_1 | 10571.6 | 12723.0 | 9414.6 | | Bearing1_2 | 4331.2 | 3815.6 | 3821.3 | | Bearing1_3 | 2997.0 | 9730.9 | 6091.2 | | Bearing1_4 | 6336.3 | 2876.6 | 14871.9 | | Bearing1_5 | 1968.9 | 7448.4 | 10411.5 | | Bearing1_6 | 4253.0 | 9896.4 | 9793.7 | | Bearing1_7 | 1388.0 | 7494.3 | 10088.1 | | Average | 4549.4 | 7712.2 | 9213.2 |
|
|
| (b) Condition 2 |
| | Test Bearings | | | |
| | Bearing2_1 | 2475.9 | 5006.5 | 7287.5 | | Bearing2_2 | 1647.3 | 4497.2 | 8288.6 | | Bearing2_3 | 8877.1 | 9508.3 | 7962.1 | | Bearing2_4 | 1769.8 | 4248.6 | 4982.5 | | Bearing2_5 | 8663.1 | 10490.0 | 10730.0 | | Bearing2_6 | 877.1 | 3504.7 | 6687.0 | | Bearing2_7 | 3012.5 | 3866.4 | 6651.9 | | Average | 3903.3 | 5874.5 | 7512.8 |
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