Aiming Control: Theory and Applications to Dynamic Control of Space Structures.

摘要

This report summarizes the results obtained during the second year of the project. The goal of the project as a whole is the investigation of fundamental bounds on the maximal achievable precision of aiming of dynamical systems with random perturbations and application of these bounds to control of space structures. To this end, during the second year of the project the following results have been obtained: it has been shown that linear systems with small additive noise can be pointed with any desired accuracy by output feedback if and only if the system is invertable and minimum phase in an approximate sense; when the measurements noise is present, the maximal achievable precision of aiming is bounded, even if the conditions mentioned above are satisfied; thus, the measurement noise has a more severe effect on the pointability of dynamical system than the input noise. In addition, the problem of residence probability control has been investigated and its relation to the problem of residence time control has been analyzed. Aiming control, Large deviations theory, Unmanned spacecraft, Residence time, Pointing processes. (jes)