IFPC System Design and Simulation for HALE UAV
The propulsion system impacts the performance of High Altitude Long Endurance Unmanned Vehicle (HALE UAV) greatly, so in the stage of design and simulation of the integrated flight and propulsion control (IFPC) system, it is necessary to build high fidelity models of the flight dynamics of UAV in consideration of the engine. At first, a nonlinear model of engine was established, which is calculated by variable specific heat aerothermodynamics method, and power extraction is considered also in the model, then the linearized equation of the rotor torque is derived. thirdly, the S-function of Matlab is employed to convert the engine model written by Fortran program to a module, which is useful in Simulink simulation platform. Compared to the results of engine ground test, the max relative error of thrust of calculation is 6. 5％ only, this shows that the engine model utilized in this paper has reflected the exact properties of the real engine accurately. The IFPC model is derived by augmenting the model of longitudinal equation of motion of the UAV and the linear model of the engine together, and a mixed sensitivity H∞ method is employed to design the IFPC controller, the simulation results show that, the dynamic respond performance of the velocity of the UAV can be met by using the controller, and when large power is extracted from the engine, which will vary the properties of the engine greatly, the vary of the dynamics of the aircraft slightly, and the robustness of the IFPC controller is proved.
HALE UAV aircraft propulsion IFPC mixed sensitivity H∞ approach robustness
Wang Rui Zhu Xiaoping Zhou Zhou
National Key Laboratory of Science and Technology on UAV, Northwestern Polytechnical University, Xi UAV Research Institute, Northwestern Polytechnical University, Xian 710072, China National Key Laboratory of Science and Technology on UAV,Northwestern Polytechnical University, Xia
国际会议
2010 Asia-Pacific International Symposium on Aerospace Technology(2010 亚太航空航天技术研讨会 APISAT 2010)
西安
英文
724-727
2010-09-01（万方平台首次上网日期，不代表论文的发表时间）