Simulation on Fuel Metering Unit Used for TurboShaft Engine Model

Authors: Bin Wang, Hengyu Ji, Zhifeng Ye

Abstract:

Fuel Metering Unit (FMU) in fuel system of an aeroengine sometimes has direct influence on the engine performance, which is neglected for the sake of easy access to mathematical model of the engine in most cases. In order to verify the influence of FMU on an engine model, this paper presents a co-simulation of a stepping motor driven FMU (digital FMU) in a turboshaft aeroengine, using AMESim and MATLAB to obtain the steady and dynamic characteristics of the FMU. For this method, mechanical and hydraulic section of the unit is modeled through AMESim, while the stepping motor is mathematically modeled through MATLAB/Simulink. Combining these two sub-models yields an AMESim/MATLAB co-model of the FMU. A simplified component level model for the turboshaft engine is established and connected with the FMU model. Simulation results on the full model show that the engine model considering FMU characteristics describes the engine more precisely especially in its transition state. An FMU dynamics will cut down the rotation speed of the high pressure shaft and the inlet pressure of the combustor during the step response. The work in this paper reveals the impact of FMU on engine operation characteristics and provides a reference to an engine model for ground tests.

Keywords: Fuel metering unit, stepping motor, AMESim/MATLAB, full digital simulation.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.3607717

References:

[1] Haidong, Sun and Yongfeng, Shang. The aero-engine control system. Control & Measurment.Vol. 6 Issue: 1, 2007, pp.65-69.
[2] Economou, John T. Electrification of aircraft systems: Power and control. Proceedings of the Institution of Mechanical Engineers Part G-journal of Aerospace Engineering. Vol. 227 Issue: G4, 2014, PP. 577.
[3] Karpenko, S .S.; Zybin, E. Yu. and Kosyanchuk, V. V. Nonparametric method for failures detection and localization in the actuating subsystem of aircraft control system. Materials Science and Engineering. Vol. 312, 2017, pp. 12010.
[4] Balakrishnan, Hamsa; Feron, Eric M.; Hansman, R. John and Jimenez, Hernando. Challenges in aerospace decision and control: air transportation systems. Lecture Notes in Control and Information Sciences. Vol. 460, 2016, pp. 109-136.
[5] Beneda, Karoly. Development of a modular FADEC for small scale turbojet Engine. SAMI. 2016, pp. 51-56.
[6] Junqiang, Song; Muxuan, Pan and Jinquan, Huang. Technology analysis and system scheme for aero-engine distributed control system. Journal of Aerospace Power. Vol. 28 Issue: 10, 2013, pp.2391-2400.
[7] Lyantsev, Oleg D.; Breikin, Timofei V.; Kulikov, Gennady G. and Arkov, Valentin Y. On-line performance optimisation of aero engine control system. Automatica. Vol. 39 Issue: 12, 2003, pp.2115-2121.
[8] Amit Kalra; Manjunatha B.A. and Vignesh Kannan. Mathematical Modeling, Simulation and Validation of Brushless DC Motor Based Fuel Metering System with its application to Marine Gas Turbine Engines. International Institute Engineers, 2015(11).
[9] Ying, Wang; Ding, Fan; Cong, Zhang; Kai, Peng and Dongye, Shi. Design and analysis of the variable pressure-drop fuel metering device. The Thirty-sixth China Conference on Control Conference (D), 2017(07).
[10] Jong-Seung, Park. A study on the development of fuel metering unit for air breathing engine. Journal of the Korea Institute of Military Science and Technology. Vol. 8 Issue: 4, 2005, pp. 152-158.
[11] Bin, Wang; Haocen, Zhao and Zhifeng, Ye. A co-modeling method based on component features for mechatronic devices in aero-engines. International Journal of Turbo & Jet-engines. Vol. 34 Issue: 3, 2017, pp. 255-267.
[12] Oyori, Hitoshi; Morioka, Noriko; Seta, Manabu; Shimomura, Yukio and Saito, Hiroshi. A motor control design for the more electric aero engine fuel system. SAE 2011 AeroTech Congress and Exhibition, 18-21 October, 2011.
[13] Dub, Michal; Bajer, Josef and Stepanek, Marce. Electronic starting control unit for small jet engine .ICMT, July 9, 2015.
[14] Hirst, M.; McLoughlin, A.; Norman, P. J. and Galloway, S. J. Demonstrating the more electric engine: a step towards the power optimised aircraft. IET Electric Power Applications, Vol. 5 Issue: 1, 2011, pp. 3-13.
[15] Kuert C, Kuert C, Jufer M, et al. New method for dynamic modeling of hybrid stepping motors. IEEE, 2002, pp. 6-12.
[16] Yuan, Liu; Xin, Zhang; Tianhong, Zhang. The design and semi-physical simulation test of fault-tolerant controller for aero Engine. International Journal of Turbo & Jet-engines, Vol. 34 Issue: 4, 2017, pp. 377-385.
[17] Wenxiang, Zhou; Jinquan, Huang and Kaiming, Huang. Real-time simulation system for aeroengine based on simplified model. Journal of Nanjing University of Aeronautics & Astronautics. Vol. 37 Issue: 2, 2005, pp. 251-255.
[18] Kirkman, M. The use of simulation in the design of modern gas turbine control systems. IEE Colloquium on Integrated Systems in Aerospace. 1997, pp. 81-83.