Simple Learning-Based Robust Nonlinear Control of an Electric Pump for Liquid-Propellant Rocket Engines
Jafari M. Reyhanoglu M. Kozhabek Z.
August 2023Multidisciplinary Digital Publishing Institute (MDPI)
Electronics (Switzerland)
2023#12Issue 16
This paper presents a robust nonlinear control strategy for an electric pump for liquid-propellant rocket engines. In order to compensate for model uncertainties and disturbances, a gradient-descent-based simple learning control strategy is employed that minimizes the cost function defined on the error dynamics of the nonlinear system. Detailed stability analysis for the nonlinear system is provided. Computer simulation results are included to demonstrate the effectiveness of the nonlinear control method using an electric pump model consisting of a brushless permanent-magnet direct current (DC) motor and a centrifugal pump. In particular, it is shown that by employing the developed nonlinear controller, the mass flow rate can be successfully kept at a certain level, can be changed instantly from one level to another (immediate decrease or increase), or can be changed linearly/nonlinearly, gradually, and continually for a certain period.
electric pump , learning control , nonlinear control
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Robotics Engineering Program, Columbus State University, Columbus, 31907, GA, United States
Department of Space Engineering and Technology, Almaty University of Power Engineering and Telecommunications, Almaty, 050013, Kazakhstan
Robotics Engineering Program
Department of Space Engineering and Technology
10 лет помогаем публиковать статьи Международный издатель
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