Efficiency of BLDC Fuel Pump Controllers of Small Turbojet Engines

Digital systems and control algorithms for small jet engines form a separate field of their development. In the Laboratory of Intelligent Control Systems of Aircraft Engines (LIRSLM) at the Faculty of Aeronautics of the Technical University in Kosice (TUKE), as part of control systems research, we also deal with the selection of a suitable fuel-oil pump controller. Commercial of the shelf hobby controllers usually uses pulse width modulation (PWM) signal to operate set the desired speed of the fuel pump. Will the change in PWM / sampling period affect the accuracy, speed of fuel delivery control to the engine? This is the question we are trying to answer in this article through obtained measurements /analysis of the effectiveness of two selected fuel-oil pump regulators. The recorded results indicate the advantages and disadvantages of specific regulators for individual areas, situations and levels of use and will serve future users and scientific research teams in building a control system with the same/similar apparatus.