A ROBUST ADAPTIVE FEEDFORWARD CONTROLLER AND APPLICATION TO A WASTE HEAT BOILER FEED SYSTEM

An adaptive feedforward conroller with model reduction is presented in this paper. For unstable and/or nonminimum phase system disturbed by measurable disturable disturbances and/or bounded disturbances, this controller is not noly able to make the resulting adaptive control system stable but also can compensate measurable disturbances effectively in the presence of unmodelled dynamics. This controller is also applied to a waste heat boiler feed system of Benxi Second Steel Plant. The satisfactory results are also obtained.