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Integrating operators’ preferences into decisions of unmanned aerial vehicles: Multi-layer decision engine and incremental preference elicitation (2019)
Conference Proceeding
Olteanu, A., Khannoussi, A., Labreuche, C., Narayan, P., Dezan, C., Diguet, J., …Meyer, P. (2019). Integrating operators’ preferences into decisions of unmanned aerial vehicles: Multi-layer decision engine and incremental preference elicitation. In S. Pekeč, & K. B. Venable (Eds.), International Conference on Algorithmic Decision Theory, (49-64). https://doi.org/10.1007/978-3-030-31489-7_4

Due to the nature of autonomous Unmanned Aerial Vehicles (UAV) missions, it is important that the decisions of a UAV stay consistent with the priorities of an operator, while at the same time allowing them to be easily audited and explained. We there... Read More about Integrating operators’ preferences into decisions of unmanned aerial vehicles: Multi-layer decision engine and incremental preference elicitation.

Influence of non-iterative time-advancement schemes on the aerodynamic prediction of pitching airfoils using dynamic mesh (2019)
Presentation / Conference
Abdessemed, C., Yao, Y., Bouferrouk, A., & Narayan, P. (2019, June). Influence of non-iterative time-advancement schemes on the aerodynamic prediction of pitching airfoils using dynamic mesh. Paper presented at 8th International Symposium on Physics of Fluids (ISPF8)

A pitching airfoil problem is addressed in this paper to assess the use of a non-iterative time-advancement (NITA) scheme with dynamic mesh method, and also to estimate possible CPU time savings. Simulations have shown that using a combination of dyn... Read More about Influence of non-iterative time-advancement schemes on the aerodynamic prediction of pitching airfoils using dynamic mesh.

Flow response to rapid morphing flap deflection (2019)
Presentation / Conference
Abdessemed, C., Yao, Y., Bouferrouk, A., & Narayan, P. (2019, March). Flow response to rapid morphing flap deflection. Paper presented at 54th 3AF International Conference on Applied Aerodynamics

Flow response to rapid morphing flap deflection is investigated at a Reynolds number based on chord of 0.62×10^6 for a 2D NACA 0012 airfoil fitted with a morphing Trailing-edge flap (TEF) at a range of angles of attack and morphing frequencies. T... Read More about Flow response to rapid morphing flap deflection.

Morphing airfoils analysis using dynamic meshing (2018)
Journal Article
Abdessemed, C., Yao, Y., Bouferrouk, A., & Narayan, P. P. (2018). Morphing airfoils analysis using dynamic meshing. International Journal of Numerical Methods for Heat and Fluid Flow, 28(5), 1117-1133. https://doi.org/10.1108/HFF-06-2017-0261

© 2018, Emerald Publishing Limited. Purpose: The purpose of this paper is to use dynamic meshing to perform CFD analyses of a NACA 0012 airfoil fitted with a morphing trailing edge (TE) flap when it undergoes static and time-dependent morphing. The s... Read More about Morphing airfoils analysis using dynamic meshing.

Aeroacoustics investigation of a harmonically morphing trailing edge flap (2018)
Presentation / Conference
Abdessemed, C., Yao, Y., Bouferrouk, A., & Narayan, P. P. (2018, March). Aeroacoustics investigation of a harmonically morphing trailing edge flap. Paper presented at 53rd 3AF International Conference on Applied Aerodynamics

In this paper, an aeroacoustic study of a NACA 0012 airfoil fitted with a morphing Trailing Edge Flap (TEF) was performed at conditions of an Angle of Attack (AoA) = 4º, Reynolds number = 0.62×10^6 and Mach number = 0.11. A modified parametrization m... Read More about Aeroacoustics investigation of a harmonically morphing trailing edge flap.

U-model enhanced dynamic control of a heavy oil pyrolysis/cracking furnace (2018)
Journal Article
Zhu, Q., Zhao, D., Zhang, S., & Narayan, P. (2018). U-model enhanced dynamic control of a heavy oil pyrolysis/cracking furnace. IEEE Caa Journal of Automatica Sinica, 5(2), 577-586. https://doi.org/10.1109/JAS.2017.7510847

This paper proposes a case study in the control of a heavy oil pyrolysis/cracking furnace with a newly extended U-Model based Pole Placement Controller (U-PPC). The major work of the paper includes: 1. establishing a control oriented nonlinear dynami... Read More about U-model enhanced dynamic control of a heavy oil pyrolysis/cracking furnace.

Analysis of a 3D unsteady morphing wing with seamless side-edge transition (2018)
Conference Proceeding
Abdessemed, C., Yao, Y., Bouferrouk, A., & Narayan, P. P. (2018). Analysis of a 3D unsteady morphing wing with seamless side-edge transition. In 2018 Applied Aerodynamics Conferencehttps://doi.org/10.2514/6.2018-3178

© 2018, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved. In this paper, a comparative study between a NACA 0012 rectangular wing with a statically morphed Trailing Edge Flap (TEF) and the same wing with a hinged flap... Read More about Analysis of a 3D unsteady morphing wing with seamless side-edge transition.

Aerodynamic analysis of a harmonically morphing flap using a hybrid turbulence model and dynamic meshing (2018)
Conference Proceeding
Abdessemed, C., Yao, Y., Bouferrouk, A., & Narayan, P. P. (2018). Aerodynamic analysis of a harmonically morphing flap using a hybrid turbulence model and dynamic meshing. In 2018 Applied Aerodynamics Conferencehttps://doi.org/10.2514/6.2018-3813

© 2018, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved. A numerical study of the NACA 0012 airfoil fitted with a harmonically morphing trailing edge flap (TEF) is performed at an angle of attack of 4º and a Reynolds... Read More about Aerodynamic analysis of a harmonically morphing flap using a hybrid turbulence model and dynamic meshing.

Ensemble-Empirical-Mode-Decomposition based micro-Doppler signal separation and classification (2017)
Journal Article
Chen, H., Lin, P., Emrith, K., Narayan, P. P., & Yao, Y. (2017). Ensemble-Empirical-Mode-Decomposition based micro-Doppler signal separation and classification. International Journal of Computer Applications in Technology, 56(4), 253-263. https://doi.org/10.1504/IJCAT.2017.10009946

The target echo signals obtained by Synthetic Aperture Radar (SAR) and Ground Moving Target Indicator (GMTI platforms are mainly composed of two parts, the micro-Doppler signal and the target body part signal. The wheeled vehicle and the track vehicl... Read More about Ensemble-Empirical-Mode-Decomposition based micro-Doppler signal separation and classification.

Unsteady parametrization of a morphing wing design for improved aerodynamic performance (2017)
Presentation / Conference
Abdessemed, C., Yao, Y., Narayan, P., & Bouferrouk, A. (2017, March). Unsteady parametrization of a morphing wing design for improved aerodynamic performance. Paper presented at 52nd 3AF International Conference on Applied Aerodynamics

A morphing wing is a bio-inspired concept where all moving parts e.g. slats/flaps are replaced with a deformable body. This paper describes a methodology that uses modified parametrization methods to define a morphing geometry, and applies user-defin... Read More about Unsteady parametrization of a morphing wing design for improved aerodynamic performance.

Case studies on U state space control system design for quadrotor model (2017)
Conference Proceeding
Narayan, P., Liu, X., Zhu, Q., & Narayan, P. P. (2017). Case studies on U state space control system design for quadrotor model. In 2016 8th International Conference on Modelling, Identification and Control (ICMIC), 857-862. https://doi.org/10.1109/ICMIC.2016.7804234

© 2016 University of MEDEA, Algeria. In this study, U-state space design is proposed to develop control systems for a standard multi-input multi-output (MIMO) quadrotor model. The desired closed loop matrix is optimally designed by the linear quadrat... Read More about Case studies on U state space control system design for quadrotor model.

Design of U-PPC-Type II for nonlinear systems (2016)
Journal Article
Zhu, G., Qiu, J., Zhu, Q., Narayan, P. P., & Wright, S. (2016). Design of U-PPC-Type II for nonlinear systems. https://doi.org/10.1109/ChiCC.2016.7555008

In this study, a new U-PPC-Type II (U-model Pole Placement Control Type II) control system design procedure is proposed based on the U-model principle. The objective of a U-PPC-Type II design is to determine a linear controller Gc from a specified cl... Read More about Design of U-PPC-Type II for nonlinear systems.

Case studies on U-state space control system design for aircraft dynamic model (2015)
Presentation / Conference
Liu, X., Zhu, Q., & Narayan, P. P. (2015, December). Case studies on U-state space control system design for aircraft dynamic model. Paper presented at 7th International Conference on Modelling, Identification and Control (ICMIC)

In this study, U-state space design approach is used to develop a control system of linearized F-16 aircraft dynamic model. The related F-16 model is converted from the original nonlinear dynamics by Taylor series around the trimmed equilibrium. The... Read More about Case studies on U-state space control system design for aircraft dynamic model.

The first stage studies of U-state space control system design (2015)
Presentation / Conference
Liu, X., Zhu, Q., Narayan, P. P., & Yang, Y. (2015, July). The first stage studies of U-state space control system design. Paper presented at 2015 34th Chinese Control Conference (CCC)

In this study, a basic idea of U-state feedback control system design method is proposed based on U-model principle. Compared with U-model based nonlinear polynomial systems, the U-state space design is to determine the desired state variable equatio... Read More about The first stage studies of U-state space control system design.

U-model based LMI robust controller design (2014)
Presentation / Conference
Liu, X., Peng, Y., Zhu, Q., & Narayan, P. P. (2014, July). U-model based LMI robust controller design. Paper presented at 2014 33rd Chinese Control Conference (CCC)

In this study, an LMI (Linear Matrix Inequality) based H� robust controller design approach is proposed to improve the performance of the designed U-pole placement control systems. Unlike the classical design procedures, the control-oriented U-model... Read More about U-model based LMI robust controller design.

Enabling autonomous flight capabilities onboard commercial aircraft to improve safety (2013)
Presentation / Conference
Narayan, P. P., & Dogramadzi, S. (2013, October). Enabling autonomous flight capabilities onboard commercial aircraft to improve safety. Paper presented at IEEE/AIAA Digital Avionics Systems Conference

This paper presents the development and implementation of a novel Flight Management System (FMS) to ensure onboard passenger safety of commercial aircraft in the event of an emergency scenario where the pilot must relinquish control of the aircraft (... Read More about Enabling autonomous flight capabilities onboard commercial aircraft to improve safety.

Embedding human expert cognition into autonomous UAS trajectory planning (2013)
Journal Article
Campbell, D., Narayan, P., Meyer, P., & Campbell, D. A. (2013). Embedding human expert cognition into autonomous UAS trajectory planning. IEEE Transactions on Cybernetics, 43(2), 530-541. https://doi.org/10.1109/TSMCB.2012.2211349

This paper presents a new approach for the inclusion of human expert cognition into autonomous trajectory planning for unmanned aerial systems (UASs) operating in low-altitude environments. During typical UAS operations, multiple objectives may exist... Read More about Embedding human expert cognition into autonomous UAS trajectory planning.

Development of an autonomous unmanned aerial system to collect time-stamped samples from the atmosphere and localize potential pathogen sources (2011)
Journal Article
Walker, R., Gonzalez, F., Castro, M. P., Narayan, P., & Zeller, L. (2011). Development of an autonomous unmanned aerial system to collect time-stamped samples from the atmosphere and localize potential pathogen sources. Journal of Field Robotics, 28(6), 961-976. https://doi.org/10.1002/rob.20417

This paper presents the hardware development and testing of a new concept for air sampling via the integration of a prototype spore trap onboard an unmanned aerial system (UAS). We propose the integration of a prototype spore trap onboard a UAS to al... Read More about Development of an autonomous unmanned aerial system to collect time-stamped samples from the atmosphere and localize potential pathogen sources.

Computationally adaptive multi-objective trajectory optimization for UAS with variable planning deadlines (2009)
Presentation / Conference
Narayan, P. P., Campbell, D. A., & Walker, R. A. (2009, March). Computationally adaptive multi-objective trajectory optimization for UAS with variable planning deadlines. Paper presented at IEEE Aerospace Conference 2009

This paper presents a new approach which allows for the computation and optimization of feasible 3D flight trajectories within real time planning deadlines, for Unmanned Aerial Systems (UAS) operating in environments with obstacles present. Sets of c... Read More about Computationally adaptive multi-objective trajectory optimization for UAS with variable planning deadlines.

Unmanning UAVs: Addressing challenges in on-board planning and decision making (2008)
Presentation / Conference
Narayan, P. P., Wu, P. P., & Campbell, D. A. (2008, September). Unmanning UAVs: Addressing challenges in on-board planning and decision making. Paper presented at First International Conference on Humans Operating Unmanned Systems HUMOUS'08

Planning and decision making, especially the planning of dynamically negotiable collision free paths, is an integral part in the operation of Unmanned Aerial Vehicles (UAVs). Effective path planning ensures that the UAV operates safely, and conforms... Read More about Unmanning UAVs: Addressing challenges in on-board planning and decision making.