Application of a Mixed H2/H-infinity Synthesis Approach to the Control Problem of the LISA Mission

Andrei F. Cojocaru; Alexandru Lapusneanu; Paulo Rosa

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CEAS EuroGNC 2024

Application of a Mixed H2/H-infinity Synthesis Approach to the Control Problem of the LISA Mission

Andrei F. Cojocaru	GNC/AOCS Engineer, Deimos Space SRL, GNC/AOCS Competence Center, Avionics Business Unit, 011013, Bucharest, Romania.
Alexandru Lapusneanu	GNC/AOCS Engineer, Deimos Space SRL, GNC/AOCS Competence Center, Avionics Business Unit, 011013, Bucharest, Romania.
Paulo Rosa	Head of the Avionics Business Unit, Deimos Engenharia Lda, 1070-061 Lisboa, Lisbon, Portugal.

Abstract:
The Laser Interferometer Space Antenna (LISA) mission from the European Space Agency (ESA) poses particularly interesting challenges in terms of Guidance, Navigation, and Control (GNC), given the accuracy requirements it entails, together with significant constraints in terms of sensing and actuation, and the associated non-trivial Dynamics, Kinematics, and Environment (DKE), the latter being addressed in a companion paper. On the one hand, since several of the GNC requirements are described in the frequency-domain, and some parameters of the spacecraft model are uncertain, robust H-infinity control is a natural candidate technique to address this type of problem. On the other hand, the H2 norm optimization allows formulating the problem as that of minimizing the energy on specific channels, which is relevant for fuel consumption reduction and for improving the conditions for the scientific experiments execution. Hence, this paper describes a preliminary application of a mixed H2/H-infinity control design solution to the LISA mission, discussing the advantages and limitations of this type of technique.

Keywords: dynamics; robust control; GNC; LISA

View PDF CEAS-GNC-2024-098

Andrei F. Cojocaru, Alexandru Lapusneanu, Paulo Rosa: Application of a Mixed H2/H-infinity Synthesis Approach to the Control Problem of the LISA Mission. Proceedings of the 2024 CEAS EuroGNC conference. Bristol, UK. June 2024. CEAS-GNC-2024-098.

BibTeX entry:

@Incollection{CEAS-GNC-2024-098,

    author = {Cojocaru, Andrei F. and Lapusneanu, Alexandru and Rosa, Paulo},

    title = {Application of a Mixed H2/H-infinity Synthesis Approach to the Control Problem of the LISA Mission},

    booktitle = {Proceedings of the 2024 {CEAS EuroGNC} conference},

    address = {Bristol, UK},

    month = jun,

    year = {2024},

    note = {CEAS-GNC-2024-098}

}