Abstract
The problem of the feedback control of a system of ordinary differential equations, nonlinear in phase variables, subjected to the effect of an unknown nonsmooth disturbance is discussed. The problem consists of constructing a control action formation law that guarantees compensation for a nonsmooth disturbance; i.e., it guarantees that the phase trajectory (as well as the rate of its change) of the given system follows the prescribed phase trajectory (as well as the rate of its change) for any admissible realization of the disturbance. Two cases are considered. In the first case, admissible disturbances are constrained by instantaneous restrictions, and in the second case, any function that is an element of the space of Lebesgue measurable functions summable with the square of the Euclidean norm can be an admissible disturbance. The problem is solved under conditions of inaccurate measurement at discrete times of the phase states of both systems. In the presence of instantaneous restrictions on disturbances, the problem is also solved by measuring some of the phase states. Algorithms for solving this problem, oriented towards computer implementation, are designed that are resistant to information interference and computational errors. Estimates of the rate of convergence of the algorithms are given.
Published Version
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