Joint robust structured design of VEGA launcher’s rigid-body controller and bending filter

Diego Navarro-Tapia, Andres Marcos, Samir Bennani, Christophe Roux

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

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Abstract

This article presents the design of a robust atmospheric control system for the rigid and flexible motion of the VEGA launcher. Unlike the state-of-practice where the design of the rigid-body controller and bending filters are traditionally addressed in a sequential and iterative manner, in this work they are first parametrized following a classical control architecture and then tuned simultaneously using the structured H∞ optimization framework. This joint design greatly simplifies the synthesis process and reduces the tuning effort across launch missions.
The capabilities of this advanced synthesis framework are exemplified through a design example using the real VEGA 5th flight mission data. The results show that the structured H∞ synthesis technique, and proposed methodology, improve the performance and robustness of the launcher, while simplifying the classical current VEGA TVC architecture. This represents a paradigm change in terms of the control design process followed
by VEGA, but not in terms of the design objectives and accumulated flight experience heritage by the actual VEGA GNC team.
Original languageEnglish
Title of host publication69th International Astronautical Congress, IAC 2018
Subtitle of host publicationProceedings of IAC 2018, 1-5 October 2018, Bremen, Germany
PublisherInternational Astronautical Federation (IAF)
Publication statusPublished - 5 Oct 2018
Event69th International Astronautical Congress 2018 - Bremen, Germany
Duration: 1 Oct 20185 Oct 2018

Conference

Conference69th International Astronautical Congress 2018
Abbreviated titleIAC 2018
CountryGermany
CityBremen
Period1/10/185/10/18

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    Navarro-Tapia, D., Marcos, A., Bennani, S., & Roux, C. (2018). Joint robust structured design of VEGA launcher’s rigid-body controller and bending filter. In 69th International Astronautical Congress, IAC 2018: Proceedings of IAC 2018, 1-5 October 2018, Bremen, Germany International Astronautical Federation (IAF).