Indirect Adaptive Control of Processes Satisfying the Classical Assumptions of Direct Adaptive Control

It is demonstrated that strict adherence to the Certainty-Equivalence Principle of indirect control is unnecessarily limiting. It is shown that only by discarding one of the principle´s main tenets is it possible to obtain with indirect control, algorithms comparable to the classical algorithms of direct control. Two new indirect adaptive control algorithms are developed; each is applicable to processes satisfying exactly the same assumptions required by the classical algorithms of direct adaptive control.