Inferential Sensor Modeling and Implementation Package

Aspen IQ is for modeling and implementation of inferred product qualities. The tool makes it possible to implement linear or non-linear inferential sensors on-line. Flexible analyzer and laboratory modules automatically adjust the inferred qualities to ensure their accuracy.

The tool comes with the Plantelligence inferential technology package and has powerful off-line and on-line components. Its modular architecture gives the user a variety of means for developing and efficiently deploying inferential sensors on a wide variety of distributed control systems and computing platforms.

Key features
On-line

• Built-in steady-state detector
• Can be stand-alone or integrated with DMCplus and InfoPlus.21TM
• Provides both analyzer and lab model updating
• Wide range of DCS and information system interfaces available
• Enabled for remote monitoring
• No code generation or programming required

Off-line

• A broad suite of tools for developing inferential sensors: PLS, fuzzy PLS, neural-network and linearized rigorous-model based approaches
• Graphical Analysis Tools for Model Evaluation
• Model building tools such as variable selection, dead-time detection and dynamics analysis
• Prediction libraries allow for future expansion, for example with process specific models.

Three on-line packages allow the user the flexibility to license only the technology needed for a given application.

Off-line Tools
IQmodel contains proprietary technology never before available in a commercial package. Techniques for data pre-processing, variable selection and dead-time determination have all been refined using the company's patent-pending technology. Non-linear inferentials can be generated using our proprietary Hybrid Neural Net and Fuzzy PLS technology.

Aspen Technology, Inc., 10 Canal Park, Cambridge, MA 02141-2200. Tel: 617-949-1000; Fax: 617-949-1030.