Robust estimator-based optimal control designs for U-tube steam generators

Ablay G.

TRANSACTIONS OF THE INSTITUTE OF MEASUREMENT AND CONTROL, vol.37, no.5, pp.636-644, 2015 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 37 Issue: 5
  • Publication Date: 2015
  • Doi Number: 10.1177/0142331214534292
  • Journal Name: TRANSACTIONS OF THE INSTITUTE OF MEASUREMENT AND CONTROL
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.636-644
  • Keywords: Algebraic control, integral control, level control, nuclear plant, optimal control, robust estimator, steam generator, NUCLEAR-POWER-PLANTS, PREDICTIVE CONTROL METHOD, FEEDWATER CONTROL-SYSTEM, SLIDING MODE CONTROL, WATER-LEVEL CONTROL, NONLINEAR CONTROL, INTEGRAL CONTROL, LOOP
  • Abdullah Gül University Affiliated: Yes

Abstract

U-tube steam generator level control systems are used to maintain the water level within prescribed narrow limits and to provide constant supply of high-quality steam during power demand variations. Traditional level control systems are often found to be unsatisfactory during low power operations and start-up conditions. Robust non-linear estimator-based optimal control systems are proposed for steam generator level control systems to solve the water level tracking problem during power (or steam) demand variations. It is shown that the proposed control strategies provide optimal and robust water level tracking with a single controller over the complete range of power operation with model and parameter uncertainties and noisy measurements.