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Ascent Flight Control System for Reusable Launch Vehicles: Full Order and Structured H∞ Designs

Maces Hernandez, Jose Alfredo and Sagliano, Marco and Heidecker, Ansgar and Seelbinder, David and Schlotterer, Markus and Fari, Stefano and Theil, Stephan and Woicke, Svenja and Dumont, Etienne (2021) Ascent Flight Control System for Reusable Launch Vehicles: Full Order and Structured H∞ Designs. 11th International ESA Conference on Guidance, Navigation & Control Systems, Sopot, Poland.

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Abstract

In this work the problem of designing and analyzing Ascent Flight Control Systems for reusable launch vehicles in endo-atmospheric flight is tackled, with emphasis on the CALLISTO first stage demonstrator, a trilateral collaboration by DLR, JAXA and CNES; for which a set of different and advanced Guidance and Control methods are currently being developed. The dynamics of the system is presented in the form of a set of non-linear differential equations and their corresponding simplifications. The full order plant dynamics is reduced to more simpler, yet representative subsystems. The equations are then linearized along trajectory for the calculation of the nominal LTIs and LFTs using the reference perturbation envelope for the the baseline scenario. The controllers are built by employing the $\hinf$ synthesis framework with the full order and PD-like structured controller architectures. The mission objectives and requirements are translated into control objectives using loop-shaping functions. Furthermore, the results are a set of controllers that are validated into different simulation layers. Results are presented in the form of Monte Carlo simulations.

Item URL in elib:https://elib.dlr.de/185891/
Document Type:Conference or Workshop Item (Speech)
Title:Ascent Flight Control System for Reusable Launch Vehicles: Full Order and Structured H∞ Designs
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Maces Hernandez, Jose AlfredoUNSPECIFIEDhttps://orcid.org/0000-0003-4579-6121
Sagliano, MarcoUNSPECIFIEDhttps://orcid.org/0000-0003-1026-0693
Heidecker, AnsgarUNSPECIFIEDhttps://orcid.org/0000-0002-7483-9074
Seelbinder, DavidUNSPECIFIEDhttps://orcid.org/0000-0003-4080-3169
Schlotterer, MarkusUNSPECIFIEDhttps://orcid.org/0000-0002-6565-3622
Fari, StefanoUNSPECIFIEDhttps://orcid.org/0000-0001-5595-6905
Theil, StephanUNSPECIFIEDhttps://orcid.org/0000-0002-5346-8091
Woicke, SvenjaUNSPECIFIEDhttps://orcid.org/0000-0002-0864-9977
Dumont, EtienneUNSPECIFIEDhttps://orcid.org/0000-0003-4618-0572
Date:23 June 2021
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:robust control, reusable launch vehicles, gnc, flight control, hinf
Event Title:11th International ESA Conference on Guidance, Navigation & Control Systems
Event Location:Sopot, Poland
Event Type:international Conference
Organizer:22 - 25 June 2021
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space System Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Space System Technology
DLR - Research theme (Project):R - Project CALLISTO [SY]
Location: Bremen
Institutes and Institutions:Institute of Space Systems
Deposited By: Maces Hernandez, Jose Alfredo
Deposited On:28 Mar 2022 11:25
Last Modified:28 Mar 2022 11:25

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