Wavelet-based density estimation and application to process monitoring
- Univ. of Sydney, New South Wales (Australia)
The on-line monitoring and diagnosis of the process operating performance are extremely important parts of the strategies aimed at improving a process and the quality of its products in the long term. An application of wavelets and multiresolution analysis to density estimation and process monitoring is presented. Wavelet-based density-estimation techniques are developed as an alternative and superior method to other common density-estimation techniques. Also shown is the effectiveness of wavelet estimators when the observations are dependent. The resulting density estimators are then used in defining a normal operating region for the process under study so that any abnormal behavior by the process can be monitored. Results of applying these techniques to a typical multivariate chemical process are also presented.
- OSTI ID:
- 506009
- Journal Information:
- AIChE Journal, Vol. 43, Issue 5; Other Information: PBD: May 1997
- Country of Publication:
- United States
- Language:
- English
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