Improvement of navigation unit in space applications using H∞ interval observers: comparison of two approaches
Language
EN
Communication dans un congrès
This item was published in
2022 IEEE International Conference on Systems, Man, and Cybernetics (SMC), 2022 IEEE International Conference on Systems, Man, and Cybernetics (SMC), 2022-10-09, Prague. 2022-10p. 1456-1461
English Abstract
The general context of this paper is the application of the guaranteed state estimation observer-based interval techniques, to improve the navigation unit used in space missions. The mission support is the Microscope ...Read more >
The general context of this paper is the application of the guaranteed state estimation observer-based interval techniques, to improve the navigation unit used in space missions. The mission support is the Microscope satellite mission. The focus is made on recent interval techniques that consider i) a <sub>ınfty</sub> constraint within the design procedure of the interval observer, and ii) that do not require the cooperative property. Such approaches allow to formulate robustness constraints against sensor misalignment errors, noises and other unknown inputs, and to cope with less restrictive synthesis conditions. A <sub>1</sub>-optimal data fusion algorithm is joint to the interval observer-based estimation algorithm, to further deliver the estimates to the control unit. Advantages and limitations of the investigated interval observers are discussed based on the results obtained from a simulation campaign conducted with the Microscope’s functional engineering simulator.Read less <
Keywords
Satellites
Microscopy
Space missions
Data integration
Observers
Satellite navigation systems
Robustness