A gain-scheduled L-2 control to nuclear steam generator water level

This paper is concerned with the design of a gain-scheduled controller with guaranteed L-2 performance for the water level control of a nuclear steam generator which has parameter varying dynamics. The proposed controller gua rantees both stability and a prescribed L-2 performance in the entire opera ting region. The systematical design method for the controller which is aut omatically adjusted along the reactor power, in terms of Linear Matrix Ineq ualities (LMIs), is shown. The main benefit of this method is to avoid most of difficulties such as gain-interpolation or griding technique in a class ical gain scheduling control. The computer simulation demonstrates the effe ctiveness of the proposed controller in full operating range and its superi ority to conventional PID controllers. (C) 1999 Published by Elsevier Scien ce Ltd. All rights reserved.