Correlation of plant states for feedback control of combustion

US7624082B2 · kind B2 · utility

Assignee

• Powitec Intelligent Technologies GmbH · DE

Inventors

• Franz Wintrich · Essen, DE
• Volker Stephan · Gardelegen, DE

Key dates

• Filing date: Sep 27, 2007
• Grant date: Nov 24, 2009
• Expiry date: Jun 9, 2028

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E20/12
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

Material (G) is converted by a combustion process in a plant (1) while air (L) is supplied. The state of the system in the plant (1) is described by state variables (x, y) and is regulated at least by one control loop (3, 5, 7, 9). Groups of states (Z) are defined for at least one pair of correlated state variables (x, y), with the groups being comparable as regards changes (dx/dt, dy/dt) of the correlated state variables (x, y). Each group of comparable states (Z) is characterized, as regards their transition functions, by parameters (Kp, Tn, Tv) of a standard controller. In the event of changes in the state of the system in the plant (1), the closest groups of comparable states (Z) are selected, and their transition functions, characterized by the parameters (Kp, Tn, Tv), are used for the purposes of regulation the system.