Integrated linear/non-linear hybrid process controller

US8649884B2 · kind B2 · utility

Assignee

• HONEYWELL INTERNATIONAL INC. · US

Inventors

• Ward MacArthur · Scottsdale, US
• Ranganathan Srinivasan · San Jose, US
• Sriram Hallihole · Kanchinakote, IN
• Madhukar Madhavamurthy Gundappa · Savanuru, IN
• Sanjay K. Dave · Savanuru, IN
• Sujit V. Gaikwad · Glendale, US
• Sachi K. Dash · Scottsdale, US

Key dates

• Filing date: Jul 27, 2011
• Grant date: Feb 11, 2014
• Expiry date: Jun 21, 2032

Classification

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

Abstract

A model predictive controller (MPC) for controlling physical processes includes a non-linear control section that includes a memory that stores a non-linear (NL) model that is coupled to a linearizer that provides at least one linearized model, and a linear control section that includes a memory that stores a linear model. A controller engine is coupled to receive both the linearized model and linear model. The MPC includes a switch that in one position causes the controller engine to operate in a linear mode utilizing the linear model to implement linear process control and in another position causes the controller engine to operate in a NL mode utilizing the linearized model to implement NL process control. The switch can be an automatic switch configured for automatically switching between linear process control and NL process control.