An objective procedure for determining whether the process variables have undergone a change of steady states is developed by using a composite statistical test. Through simulation studies and application to plant data, guidelines are developed for choosing the number of variables grouped together for testing, the number of measurements used for time averaging, the level of significances of the tests and the appropriate formulation of the hypotheses. The procedure developed here is useful in process data reconciliation and in applications which require an analysis of process trends.
|Original language||English (US)|
|State||Published - Jan 1 1986|
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