A gain-scheduled L2 control to nuclear steam generator water level

This paper is concerned with the design of a gain-scheduled controller with guaranteed L2 performance for the water level control of a nuclear steam generator which has parameter varying dynamics. The proposed controller guarantees both stability and a prescribed L2 performance in the entire operating region. The systematical design method for the controller which is automatically adjusted along the reactor power, in terms of Linear Matrix Inequal- ities (LMIs), is shown. The main benefit of this method is to avoid most of diculties such as gain-interpolation or griding technique in a classical gain scheduling control. The computer simulation demonstrates the e€ectiveness of the proposed controller in full operating range and its superiority to conventional PID controllers.