Title :
Preventing control constraint violations by use of energy balances for a class of coupled systems: Applied to a power plant
Author :
Odgaard, P.F. ; Stoustrup, J.
Author_Institution :
KK-Electron. a/s, Viby
Abstract :
In this paper a scheme is presented for preventing violations of control signal constraints in a class of coupled systems. The scheme is an add-on solution to the existing control system; it works like a fault tolerant scheme, by accommodating the problem then occurring. The proposed scheme recomputes the reference values to the system such that control signal constraint violations are avoided. The new reference values are found using an energy balance of the system. The scheme is intended to handle rarely occurring constraint violations, so the only concern is that the system should be stable and not to optimize performance during all conditions. The scheme is applied to an example with a coal mill pulverizing coal for a power plant.
Keywords :
coal; power generation control; power plants; pulverised fuels; coal mill pulverizing coal; control constraint violations; control signal constraints; coupled systems class; energy balances; power plant; Automatic control; Constraint optimization; Control systems; Design methodology; Milling machines; Power generation; Predictive control; Predictive models; Stability; Testing;
Conference_Titel :
Decision and Control, 2007 46th IEEE Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
978-1-4244-1497-0
Electronic_ISBN :
0191-2216
DOI :
10.1109/CDC.2007.4434017