1. An MPC Approach to Transient Control of Liquid-Propellant Rocket Engines
- Author
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Francois Farago, Marco Galeotta, Emilien Flayac, Nicolas Langlois, Serge Le Gonidec, Hélène Piet-Lahanier, Sergio Pérez-Roca, Julien Marzat, André, Cécile, DTIS, ONERA, Université Paris Saclay (COmUE) [Palaiseau], ONERA-Université Paris Saclay (COmUE), Centre National d'Etudes Spatiales - Direction Des Lanceurs. (CNES), Pôle Automatique et Systèmes, Institut de Recherche en Systèmes Electroniques Embarqués (IRSEEM), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-École Supérieure d’Ingénieurs en Génie Électrique (ESIGELEC)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-École Supérieure d’Ingénieurs en Génie Électrique (ESIGELEC), and ArianeGroup SAS
- Subjects
0209 industrial biotechnology ,business.product_category ,Computer science ,[SPI] Engineering Sciences [physics] ,FOS: Physical sciences ,02 engineering and technology ,Systems and Control (eess.SY) ,[MATH] Mathematics [math] ,[INFO] Computer Science [cs] ,7. Clean energy ,Electrical Engineering and Systems Science - Systems and Control ,[PHYS] Physics [physics] ,[SPI]Engineering Sciences [physics] ,TRACKING ,020901 industrial engineering & automation ,Physics - Space Physics ,Robustness (computer science) ,Control theory ,ROBUSTNESS ,0202 electrical engineering, electronic engineering, information engineering ,FOS: Electrical engineering, electronic engineering, information engineering ,[INFO]Computer Science [cs] ,LIQUID-PROPELLANT ROCKET ENGINES ,[MATH]Mathematics [math] ,Finite set ,MODEL PREDICTIVE AND OPTIMISATION-BASED CONTROL ,[PHYS]Physics [physics] ,Liquid-propellant rocket ,020208 electrical & electronic engineering ,Open-loop controller ,TRANSIENTS ,TRANSITOIRE ,Minimax ,Space Physics (physics.space-ph) ,Nonlinear system ,MOTEUR FUSEE CRYOGENIQUE ,Rocket ,CONTROL OF CONSTRAINED SYSTEMS ,Control and Systems Engineering ,business ,COMMANDE PREDICTIVE - Abstract
The current context of launchers reusability requires the improvement of control algorithms for their liquid-propellant rocket engines. Their transient phases are generally still performed in open loop. In this paper, it is aimed at enhancing the control performance and robustness during the fully continuous phase of the start-up transient of a generic gas-generator cycle. The main control goals concern end-state tracking in terms of combustion-chamber pressure and chambers mixture ratios, as well as the verification of a set of hard operational constraints. A controller based on a nonlinear preprocessor and on linear MPC (Model-Predictive Control) has been synthesised, making use of nonlinear state-space models of the engine. The former generates the full-state reference to be tracked while the latter achieves the aforementioned goals with sufficient accuracy and verifying constraints for the required pressure levels. Robustness considerations are included in the MPC algorithm via an epigraph formulation of the minimax robust optimisation problem, where a finite set of perturbation scenarios is considered., Comment: IFAC ACA 2019, Cranfield, UK. 6 pages
- Published
- 2019