ABSTRACT
The modern stage of development of theoretical and practical methods of control systems design and implementation calls for using methods making it possible to account for parametric uncertainties. In fact, there is a fairly wide class of problems where the use of sensitivity theory apparatus is necessary and advantageous. Even superficial analysis of the applied problems of sensitivity theory shows that sensitivity functions, additional motion and variations of the corresponding parameters are necessary elements of any problem belonging to this class. Most applied problems of sensitivity theory can be classified into the following three groups: direct problems of sensitivity theory, reverse problems of sensitivity theory and mixed problems. The solution of direct problems is connected, as a rule, with analysis of additional motion. The identification problem can be reduced to a nonlinear programming problem that is usually solved using numerical methods.
