Model-Based Robust Transient Control of Reusable Liquid-Propellant Rocket Engines
نویسندگان
چکیده
Reusable liquid-propellant rocket engines (LPREs) imply more demanding robustness requirements than expendable ones due to their extended capabilities. Therefore, the goal of this article was develop a control loop adapted all operating phases LPRE, including transients, and robust internal parametric variations. First, thermo-fluid-dynamic simulators representative gas-generator-cycle were built. These subsequently translated into nonlinear state-space models. Based on these models, continuous subphase start-up transient is controlled track precomputed reference trajectories. Beyond start-up, throttling scenarios are managed with end-state-tracking algorithm. Model predictive has been applied in linearised manner considerations both scenarios, which set hard state constraints must be respected. Tracking pressure (thrust) mixture-ratio points within design envelope achieved simulation while respecting constraints. Robustness variations predominant parameters, external perturbations, possible impact an observer loop, demonstrated.
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ژورنال
عنوان ژورنال: IEEE Transactions on Aerospace and Electronic Systems
سال: 2021
ISSN: ['1557-9603', '0018-9251', '2371-9877']
DOI: https://doi.org/10.1109/taes.2020.3010668