ASPECT. Methodology for inferential sensing and assessment of quality control

ASPECT (Advanced Statistical Process Estimation and Control Technology) was developed by DuPont as a prototype to help better understand the application of inferential sensing and how it applies to “quality” control. ASPECT is: (i) An application methodology that provides a structured approach to the problem of quality control. (ii) Software tools developed in support of that methodology. ASPECT helps plant engineers evaluate the merits of various quality control approaches. It also provides a means to quantify and understand the opportunity for moving from one level of quality control to the next. The ASPECT software is a complete, simple to use, integrated environment for data gathering, empirical modeling and inferential sensing applications. This short presentation will discuss ASPECT´s role in evaluating alternative approaches to quality control approaches and will cover ASPECT´s capabilities with respect to inferential sensing. It will briefly cover several application of ASPECT in support process analytical applications