ADAPTIVE BACKSTEPPING CONTROL OF A POWER PLANT STATION MODEL

Abstract The backstepping technique was used in order to synthesise a non-linear control law for the non-linear model of the power plant station. The non-linearities in the model are related to steam flow through the super-heater and action of turbine valves. The time constant of the boiler is considered as an unknown parameter. Its value has to be adapted. The backstepping procedure presents a straightforward method to implement the law of adaptation, which ensures the stability. Symbolic computations were used to derive control law. The performed simulations have shown that the performance and quality of adaptive non-linear control system is the same across the entire range of operation and the adapted parameter converges to its nominal value.