Method and apparatus for dynamic and steady state modeling over a desired path between two end points

US5933345A · kind A · utility

Assignee

• Pavilion Technologies, Inc. · US

Inventors

• Gregory D. Martin · Georgetown, US
• Eugene Boe · Austin, US
• Stephen Piche · Austin, US
• James D. Keeler · Austin, US
• Douglas Timmer · Austin, US
• Mark Gerules · Cedar Park, US
• John P. Havener · Leander, US

Key dates

• Filing date: May 6, 1996
• Grant date: Aug 3, 1999
• Expiry date: May 6, 2016

Classification

• Technology area (CPC G): Physics
• CPC primary: G05B13/048
• WIPO field: Control
• WIPO sector: Instruments

Abstract

A method for providing independent static and dynamic models in a prediction, control and optimization environment utilizes an independent static model and an independent dynamic model. The static model is a rigorous predictive model that is trained over a wide range of data, whereas the dynamic model is trained over a narrow range of data. The gain K of the static model is utilized to scale the gain k of the dynamic model. The forced dynamic portion of the model referred to as the b.sub.i variables are scaled by the ratio of the gains K and k. The b.sub.i have a direct effect on the gain of a dynamic model. This is facilitated by a coefficient modification block. Thereafter, the difference between the new value input to the static model and the prior steady-state value is utilized as an input to the dynamic model. The predicted dynamic output is then summed with the previous steady-state value to provide a predicted value Y. Additionally, the path that is traversed between steady-state value changes.