OPTIMIZATION OF CONTROL SYSTEMS BY AN ANALOG METHOD

摘要

This report describes a method of optimizing the operation of a plant subject to random disturbances whose effect can be decreased by means of suitable non-linearities inserted in the feedback chain. The system in ques¬tion, which is subjected to random stationary perturbations, is optimized under operating conditions, in the steady state, by minimizing a functional consisting of a linear combination of mean quadratic values and mean moduli of a few significant parameters.nBy using analog techniques to solve the dynamic equations of the system, in which the perturbations, whose spectral distribution has been determined in a preliminary plant analysis, are introduced as perturbing signals, the functional is obtained in terms of the parameters of the non-linearities. A minimum condition can thus be readily pinpointed.