METHOD AND SYSTEM FOR OBTAINING VALID OSCILLATING COMPONENTS

摘要

The invention provides a method for obtaining valid oscillating components from raw process data in a process plant. The method includes applying a decomposition technique on the raw process data to obtain oscillating components having period values. These period values may be subjected to statistical treatment or be used as such to obtain applicable period values. Then, a regularity check is performed on the applicable period values to obtain first level valid oscillating components. Noise level in a process is estimated from the time series data, which is used to remove noisy oscillating components from the first level valid oscillating components to obtain second level valid oscillating components. The invention further includes clustering the second level valid oscillating components into unique oscillating components based on a mean period distance between given oscillating components.