Decomposition of nonlinear dynamics using multiple model approach and gap metric analysis

US8073659B2 · kind B2 · utility

Assignee

• HONEYWELL INTERNATIONAL INC. · US

Inventors

• Jinendra Gugaliya · Kanchinakote, IN
• Ravindra Gudi · Mumbai, IN
• Jinyi Mo · Shanghai, CN
• Guan Tien Tan · Bukit Mertajam, MY

Key dates

• Filing date: Nov 13, 2007
• Grant date: Dec 6, 2011
• Expiry date: Jan 28, 2030

Classification

• Technology area (CPC G): Physics
• CPC primary: G05B17/02
• WIPO field: Control
• WIPO sector: Instruments

Abstract

Multiple models for various stages of a non-linear process control are developed by clustering perturbation data obtained from the nonlinear process so as to permit multiple local data regions to be identified as a function of substantial similarity between the data, wherein the data of first data set represent the non-linear process. A discrete model corresponding to each of the local data regions is generated. The number of the discrete models may be reduced as a function of prediction error between actual outputs of the process and predicted outputs of the models and as a function of a gap metric based on closed loop similarity and frequency response similarity between the models.