Searched for: author%3A%22Smeur%2C+E.J.J.%22
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Makaveev, M.K. (author), Snellen, M. (author), Smeur, E.J.J. (author)
This paper puts forward a novel design for an airspeed instrument aimed at small fixed-wing tail-sitter unmanned aerial vehicles. The working principle is to relate the power spectra of the wall-pressure fluctuations beneath the turbulent boundary layer present over the vehicle’s body in flight to its airspeed. The instrument consists of two...
journal article 2023
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Steffensen, Rasmus (author), Steinert, Agnes (author), Smeur, E.J.J. (author)
In this paper, we derive a sensor-based nonlinear dynamic inversion (NDI) control law for a nonlinear system with first-order linear actuators, and compare it to incremental nonlinear dynamic inversion (INDI), which has gained popularity in recent years. It is shown that, for first-order actuator dynamics, INDI approximates the corresponding NDI...
journal article 2023
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Lovell-Prescod, Gervase H.L.H. (author), Ma, Z. (author), Smeur, E.J.J. (author)
Tailsitter Micro Air Vehicles with two rotors are promising due to their simplicity and efficient forward flight, but actuator saturation due to ineffective pitch control at a high angle of attack flight is a challenge limiting the flight envelope. This paper proposes a novel tilt-rotor tailsitter design which features two tilting rotors as...
conference paper 2023
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De Ponti, T.M.L. (author), Smeur, E.J.J. (author), Remes, B.D.W. (author)
This paper presents the design of an Incremental Nonlinear Dynamic Inversion (INDI) controller for the novel, patent pending (NL 2031701) platform Variable Skew Quad Plane (VSQP). Part of the identified challenges is the development of a model for the actuator effectiveness and lift especially as a function of skew, the newly added degree of...
conference paper 2023
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Blaha, T.M. (author), Smeur, E.J.J. (author), Remes, B.D.W. (author)
In vehicle control, control allocation is often used to abstract control variables from actuators, simplifying controller design and enhancing performance. Surveying available literature reveals that explicit solutions are restricted to strong assumptions on the actuators, or otherwise fail to exploit the capabilities of the actuator...
journal article 2023
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Mancinelli, A. (author), van der Horst, E. (author), Remes, B.D.W. (author), Smeur, E.J.J. (author)
This paper presents a modular autopilot framework for Unmanned Aerial Vehicles (UAVs) that addresses the limitations of modern flight controllers. The framework utilizes separate and external subsystems for actuator control and the resolution of the Control Allocation problem. The actuator subsystem, implemented on a Teensy 4.0 microcontroller,...
conference paper 2023
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Mancinelli, A. (author), Remes, B.D.W. (author), de Croon, G.C.H.E. (author), Smeur, E.J.J. (author)
Hybrid Unmanned Aerial Vehicles UAV are vehicles capable of take-off and landing vertically like helicopters while maintaining the long-range efficiency of fixed-wing aircraft. Unfortunately, due to their wing area, these vehicles are sensitive to wind gusts when hovering. One way to increase the hovering wind-rejection capabilities of hybrid...
journal article 2023
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Smeur, E.J.J. (author), de Croon, G.C.H.E. (author), Chu, Q. P. (author)
The authors regret to inform that an incorrect transfer function was included in Eq. (12). The correct transfer function is: [Formula Presented] The selected gains were [Formula Presented]. This leads to a real pole at 0.964 and two complex poles at 0.965 ± 0.0445i. The difference of the model compared to the measured step response has now...
journal article 2023
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Ma, Z. (author), Smeur, E.J.J. (author), de Croon, G.C.H.E. (author)
Tailsitters have complex aerodynamics that make them hard to control throughout the entire flight envelope, especially at very high angle of attack (AoA) and reverse flow conditions. The development of controllers for these vehicles is hampered by the absence of publicly available data on forces and moments experienced in such conditions. In...
journal article 2022
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Mancinelli, A. (author), Smeur, E.J.J. (author), Remes, B.D.W. (author), de Croon, G.C.H.E. (author)
In the last few decades, the UAV research has been focusing on hybrid vehicles with Vertical Takeoff and Landing (VTOL) capabilities. Opposed to copters, hybrid vehicles are highly influenced by wind disturbances. This paper presents a novel quad-plane design that uses four dual-axis tilting rotors to enhance the wind rejection capability of...
conference paper 2022
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Schröter, S. (author), Smeur, E.J.J. (author), Remes, B.D.W. (author)
Unmanned Aerial Vehicles (UAVs) have the potential to perform many different missions, some of which may require a large aircraft for endurance and a small aircraft for manoeuvrability in a building. This paper proposes a novel combination of a quadrotor and a hybrid biplane capable of joint hover, joint forward flight, and mid-air disassembly...
conference paper 2022
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de Wagter, C. (author), Remes, B.D.W. (author), Smeur, E.J.J. (author), van Tienen, F. (author), Ruisink, Rick (author), van Hecke, K.G. (author), van der Horst, E. (author)
Many Unmanned Air Vehicle (UAV) applications require vertical take-off and landing and very long-range capabilities. Fixed-wing aircraft need long runways to land, and electric energy is still a bottleneck for helicopters, which are not range efficient. In this paper, we introduce the NederDrone, a hybrid lift, hybrid energy hydrogen-powered...
journal article 2021
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van Wijngaarden, D.C. (author), Smeur, E.J.J. (author), Remes, B.D.W. (author)
Rotorcraft, fixed wing and hybrid Unmanned Air Vehicles (UAV) each have applications in which they excel. Traditionally, dedicated autopilot control code is written to accommodate flight of each UAV type. This causes fragmentation of control code and may lead to performance differences or errors. In this paper, we propose to use the same INDI...
conference paper 2021
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Smeur, E.J.J. (author)
Micro Air Vehicles (MAVs) can perform many useful tasks, such as mapping and delivery. For these tasks either rotorcraft are used, which can hover but are not very efficient, or fixed wing vehicles, which are efficient but can not hover. Hybrid MAVs combine the hovering of a rotorcraft with the efficiency of a fixed wing. The reason that these...
doctoral thesis 2018
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Smeur, E.J.J. (author), de Croon, G.C.H.E. (author), Chu, Q. P. (author)
This paper presents the cascaded integration of Incremental Nonlinear Dynamic Inversion (INDI) for attitude control and INDI for position control of micro air vehicles. Significant improvements over a traditional Proportional Integral Derivative (PID) controller are demonstrated in an experiment where the quadrotor flies in and out of a 10 m...
journal article 2018
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de Wagter, C. (author), Ruisink, Rick (author), Smeur, E.J.J. (author), van Hecke, K.G. (author), van Tienen, F. (author), van der Horst, E. (author), Remes, B.D.W. (author)
To participate in the Outback Medical Express UAV Challenge 2016, a vehicle was designed and tested that can autonomously hover precisely, takeoff and land vertically, fly fast forward efficiently, and use computer vision to locate a person and a suitable landing location. The vehicle is a novel hybrid tail‐sitter combining a delta‐shaped...
journal article 2018
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van der Sman, E.S. (author), Smeur, E.J.J. (author), Remes, B.D.W. (author), de Wagter, C. (author), Chu, Q. P. (author)
Maintaining stable flight during high turbulence intensities is challenging for fixed-wing micro air vehicles (MAV). Two methods are proposed <br/>to improve the disturbance rejection performance of the MAV: incremental nonlinear dynamic inversion (INDI) control and phaseadvanced pitch probes. INDI uses the angular acceleration measurements to...
conference paper 2017
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Smeur, E.J.J. (author), Höppener, D.C. (author), de Wagter, C. (author)
This paper deals with the problem of actuator saturation for INDI (Incremental Nonlinear Dynamic Inversion) controlled flying vehicles. The primary problem that arises from actuator saturation for quadrotors, is that of arbitrary control objective realization. We have integrated the weighted least squares control allocation algorithm into INDI,...
conference paper 2017
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de Wagter, C. (author), Smeur, E.J.J. (author)
This work investigates the design parameters and their consequences in the control of a helicopter rotor combined with a pair of fixed wings. This hybrid vehicle has a light and aerodynamically efficient rotor with a large range of pitch angles to enable both hover and forward flight. Because of the light stiff rotor and heavy wings, the hybrid...
journal article 2017
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Bronz, Murat (author), Smeur, E.J.J. (author), Garcia de Marina, Hector (author), Hattenberger, Gautier (author)
conference paper 2017
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