Research Article

Application of Control Charts and Hidden Markov Models in Condition-Based Maintenance at Thermoelectric Power Plants

Table 1

Acquired acoustic signals.

Date of acquisitionSignal durationTime since last maintenance

Grinding table replaced on January 19, 2012
February 2, 201210 min 51 s14 days
February 24, 20128 min 8 s36 days
March 1, 20128 min 8 s42 days
March 15, 20127 min 3 s54 days

Grinding table replaced on March 24, 2012
March 30, 20126 min6 days
April 5, 20125 min12 days
April 19, 20126 min26 days