Abstract
In this article, simultaneous longitudinal and lateral flight control systems design for both passive and active morphing tactical unmanned aerial vehicles (TUAVs) is first time applied for autonomous flight performance maximization in the literature. For this purpose longitudinal and lateral dynamics modelling of TUAVs produced in Erciyes University, Faculty of Aeronautics and Astronautics, Model Aircraft Laboratory are considered in order to obtain simulation environments. Our produced TUAV is called as ZANKA-III which has weight of 50 kg, range of around 3000 km, endurance of around 28 hour, and ceiling altitude of around 12500 m. Von-Karman turbulence modelling is used in order to model atmospheric turbulence during flight in both longitudinal and lateral simulation environments. A stochastic optimization method called as simultaneous perturbation stochastic approximation (i.e. SPSA) is also first time applied in order to obtain optimum dimensions of morphing parameters (i.e. extension ratios of wingspan and tailspan, assembly positions of wing and tailplane to fuselage) and optimum magnitudes of longitudinal and lateral controllers’ gains (i.e. P, I and D gains) while minimizing cost index capturing terms about both longitudinal and lateral autonomous flight performances and there exists lower and upper constraints on all optimization variables in the literature.DOI: http://dx.doi.org/10.5755/j01.eie.23.5.19238
Highlights
For the last 40 and 50 years Unmanned Air Vehicles (UAVs) have been used for military operations as well as in civilian operations due to fact that they have several superiorities with respect to the classical manned vehicles
In this article simultaneous longitudinal and lateral flight control system design for passive and active morphing tactical unmanned aerial vehicles (TUAVs) are first time considered in the literature
Simultaneous longitudinal and lateral flight control systems design for both passive and active morphing tactical unmanned aerial vehicles (TUAVs) was benefited for total (c) autonomous flight performance maximization in this article. For this intention longitudinal and lateral dynamics modelling of TUAVs produced in Erciyes University, Faculty of Aeronautics and Astronautics, Model Aircraft Laboratory were used in order to get simulation environments
Summary
For the last 40 and 50 years Unmanned Air Vehicles (UAVs) have been used for military operations as well as in civilian operations due to fact that they have several superiorities with respect to the classical manned vehicles. If the optimum results found using lateral motion is applied, the longitudinal motion do not give best closed-loop responses In this article this drawback is regarded, and longitudinal and lateral autopilot systems are simultaneously designed in order to obtain best magnitudes of morphing parameters. In this article simultaneous longitudinal and lateral flight control system design for passive and active morphing TUAVs are first time considered in the literature This provides satisfactory closed-loop responses for both longitudinal and lateral motions. In this article for combined design during cost index minimization capturing terms from both longitudinal and lateral flight performance, a stochatic optimization method is first time applied in the literature This supplies fast convergence of algoritm and obtaining safe optimum results
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