A method of controlling a process driven by a control signal for producing
a corresponding output includes producing an error signal as a function
of a state of the process and of a reference signal. A control signal is
generated as a function of the error signal and of a parameter adjustment
signal. The control signal is applied to the process. A derived signal
representative of a quantity to be minimized is calculated by processing
paired values of the state of the process and the control signal. A
correction signal is calculated from a set of several different values of
the control signal that minimizes the derived signal. The parameter
adjustment signal is calculated by a neural network and fuzzy logic
processor from the error signal and the correction signal. The correction
signal is periodically calculated by a Quantum Genetic Search Algorithm
that results from a merging of a genetic algorithm and a quantum search
algorithm.