Shock and Vibration

Research Article

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

Table 2

Number of data points above the upper control limit.
Date of signal acquisition Number of weeks after grinding table replacementNumber of data points above UCLData points above UCL [%]
Feb. 2, 2012281.43%
Feb. 24, 2012538368.27%
Mar. 15, 2012847684.85%
Apr. 5, 201229416.75%
Apr. 19, 2012432357.58%