Mathematical Problems in Engineering / 2015 / Article / Tab 5

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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