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Review of hybrid electric powered aircraft,its conceptual design and energy management methodologies

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Chinese Journal of Aeronautics 2021年第4期34卷 432-450页

作者： Ye XIE Al SAVVARISAL antonios tsourdos Dan ZHANG Jason GU Intelligent Robot Research Centre Zhejiang LabHangzhou311100China School of Aerospace Transport and ManufacturingCranfield UniversityBedford MK430ALUnited Kingdom York University North YorkToronto M3J 1P3Canada Dalhousie University HalifaxNova Scotia B3H 4R2Canada

The paper overviews the state-of-art of aircraft powered by hybrid electric propulsion *** research status of the design and energy management of hybrid aircraft and hybrid propulsion systems are further *** first contribution of the review is to demonstrate that,in the context of relatively underdeveloped electrical storage technologies,the study of mid-scale hybrid aircraft can contribute the most to both theoretical and practical ***,the profits and potential drawbacks of applying hybrid propulsion to mid-scale hybrid airplanes have not been thoroughly ***,as summed in the overview of design methodologies,the multi-objective optimization transcends the single-objective *** potential of the hybrid propulsion system can be thoroughly evaluated in only one optimization run,if several objectives optimized *** there are few researches covering the conceptual design of hybrid aircraft using multi-objective *** review of the most popular energy management strategies discloses the third research gap—current methodologies favoured in hybrid ground vehicles do not consider the aircraft ***,both non-causal and causal energy management are needed for performing a complicated flight mission with several sub-tasks.

关键词： Aircraft Convex optimization Energy management Fuzzy logic control Hybrid electric propulsion system Non-dominated sorting genetic algorithm Sizing

Optimal three-dimensional impact time guidance with seeker’s field-of-view constraint

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Chinese Journal of Aeronautics 2021年第2期34卷 240-251页

作者： Shaoming HE Chang-Hun LEE Hyo-Sang SHIN antonios tsourdos School of Aerospace Engineering Beijing Institute of TechnologyBeijing 100081China Department of Aerospace Engineering Korea Advanced Institute of Science and TechnologyDaejeon 34141Republic of Korea School of Aerospace Transport and ManufacturingCranfield UniversityCranfiehMK43 OALUnited Kingdom

This paper proposes a new three-dimensional optimal guidance law for impact time control with seeker’s Field-of-View(FOV) constraint to intercept a stationary target. The proposed guidance law is devised in conjunction with the concept of biased Proportional Navigation Guidance(PNG). The guidance law developed leverages a nonlinear function to ensure the boundedness of velocity lead angle to cater to the seeker’s FOV limit. It is proven that the impact time error is nullified in a finite-time under the proposed method. Additionally, the optimality of the biased command is theoretically analyzed. Numerical simulations confirm the superiority of the proposed method and validate the analytic findings.

关键词： Applied optimal control Field-of-view constraint Impact time control Missile guidance Optimal error dynamics

Capturability of 3D RTPN guidance law against true-arbitrarily maneuvering target with maneuverability limitation

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Chinese Journal of Aeronautics 2022年第7期35卷 75-90页

作者： Kebo LI Zhihui BAI Hyo-Sang SHIN antonios tsourdos Min-Jea TAHK Department of Applied Mechanics College of Aerospace Science and EngineeringNational University of Defense TechnologyChangsha 410073China Institute of Aerospace Sciences SATMCranfield UniversityCranfield MK430ALUK Department of Aerospace Engineering Korea Advanced Institute of Science and TechnologyDaejeon 34141Republic of Korea

The capturability of the Three-Dimensional(3D)Realistic True Proportional Navigation(RTPN)guidance law is thoroughly *** true-arbitrarily maneuvering target is considered,which maneuvers along an arbitrary direction in 3D space with an arbitrary but upperbounded *** whole nonlinear relative kinematics between the interceptor and target is taken into ***,the upper-bound of commanded acceleration of 3D RTPN is deduced,using a novel Lyapunov-like ***,the reasonable selection range of navigation gain of3D RTPN is analyzed,when the maneuver limitation of interceptor is *** that,a more realistic definition of capture is adopted,i.e.,the relative range is smaller than an acceptable miss-distance while the approaching speed is larger than a required impact *** previous researches which present Two-Dimensional(2D)capture regions,the inequality analysis technique is utilized to obtain the 3D capture region,where the three coordinates are the closing speed,transversal relative speed,and relative *** obtained capture region could be taken as a sufficient-but-unnecessary condition of *** new theoretical findings are all given in explicit expressions and are more general than previous results.

关键词： Capture region Lyapunov-like approach Maneuverability Limitation Realistic true proportional navigation True-arbitrarily maneuvering target

Terrain based co-operative UAV mapping of complex obstacles using 2-D splinegon

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International Journal of Intelligent Computing and Cybernetics 2012年第3期5卷 248-292页

作者： Samuel B.Lazarus antonios tsourdos Brian A.White Peter Silson Al Savvaris Camille-Alain Rabbath Nicolas Lèchevin School of Engineering Cranfield UniversityCranfieldUK Autonomous Systems Group Defence Academy of the United KingdomCranfield UniversityShrivenhamUK Defence Research and Development Canada-Valcartier Quebec CityCanada Numerica Technologies Inc.ValcartierQuebec CityCanada

Purpose-This paper aims to describe a recently proposed algorithm in terrain-based cooperative UAV mapping of the unknown complex obstacle in a stationary environment where the complex obstacles are represented as curved in *** also aims to use an extended Kalman filter(EKF)to estimate the fused position of the UAVs and to apply the 2-D splinegon technique to build the map of the complex shaped *** path of the UAVs are dictated by the Dubins path planning *** focus is to achieve a guaranteed performance of sensor based mapping of the uncertain environments using multiple ***/methodology/approach–An extended Kalman filter is used to estimate the position of the UAVs,and the 2-D splinegon technique is used to build the map of the complex obstacle where the path of the UAVs are dictated by the Dubins path planning ***-The guaranteed performance is quantified by explicit bounds of the position estimate of the multiple UAVs for mapping of the complex obstacles using 2-D splinegon *** is a newly proposed algorithm,the most efficient and a robust way in terrain based mapping of the complex *** proposed method can provide mathematically provable and performance guarantees that are achievable in ***/value-The paper describes the main contribution in mapping the complex shaped curvilinear objects using the 2-D splinegon *** is a new approach where the fused EKF estimated positions are used with the limited number of sensors’measurements in building the map of the complex obstacles.

关键词： Multiple sensor fusion Data fusion EKF based navigation Multiple UAVs 2-D splinegon Robust UAV localization Complex obstacle mapping Sensor fusion Navigation

Task Allocation in Agricultural Remote Sensing Applications using Submodular Maximization Algorithm

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Task Allocation in Agricultural Remote Sensing Applications ...

Trajectory Optimization for Target Localization and Sensor Bias Calibration with Bearing-Only Information

第37届中国控制会议

作者： Min-Guk Seo Hyo-Sang Shin antonios tsourdos School of Aerospace Transport and Manufacturing Cranfield University

This paper addresses the application of task allocation algorithm for agricultural remote sensing using a group of UAVs. A task allocation problem is formulated as a form of reward function maximization problem. The reward function is defined by considering the following three aspects. The first aspect is to assign tasks to UAVs with proper sensors to detect the most severe hazards for the crop raised in each field at the observation season. The minimization of the total operation time of UAVs is another aspect for short observation time and small fuel consumption. The last aspect is to assign tasks uniformly to the UAVs to prevent overloads on certain UAVs. In order to apply submodular maximization-based algorithm, the subexponential submodularity tester is applied to verify the submodularity of the defined reward function. A greedy algorithm-based task allocation method is applied to the designed task allocation problem as an example of submodular maximization-based *** are conducted to show the characteristics of the designed reward function and to compare the results of the task allocation method with the optimal solutions.

关键词： Task Allocation Precision Agriculture Submodular Maximization Greedy Algorithm

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Guidance, Navigation and Control 2022年第3期2卷 11-29页

作者： Xiwen Yang Shaoming He Hyo-Sang Shin antonios tsourdos School of Aerospace Engineering Beijing Institute of Technology Beijing 100081P.R.China Yangtze River Delta Graduate School of Beijing Institute of Technology Jiaxing 314019P.R.China School of Aerospace Transport and ManufacturingCranfield UniversityCranfield MK430ALUK

The problem of trajectory optimization of an unmanned aerial vehicle(UAV)for static target localization with biased bearing measurements is *** angular bias in sensor measurements is modeled as an additive constant in the observation model and jointly estimated with the position of the *** necessary conditions for system observability of this estimation problem is first derived analytically with geometrical interpretations *** trajectory of UAV is designed based on the Fisher Information Matrix(FIM)considering physical constraints to enhance the system *** results with Monte-Carlo runs are presented to demonstrate the improvement in target localization with biased measurements by UAV trajectory optimization.

关键词： Bearing-only measurement target localization bias estimation trajectory optimization