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Brinkman, Anne (author)Background: The lack of access to electric powered wheelchairs for disabled people in low- and middle-income countries, that suit their rural environments, still remains an issue. Current available electric powered wheelchairs that do adapt to these rural environments are expensive and require complex control algorithms.<br/>Objective: The aim...master thesis 2023
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Ellis, Michael D. (author), Gurari, Netta (author), Gerritsen, Ninette T.A. (author), Lee, Sabrina M. (author), Wang, Amy (author), Dewald, J.P.A. (author)Muscle tissue is prone to changes in composition and architecture following stroke. Changes in muscle tissue of the extremities are thought to increase resistance to muscle elongation or joint torque under passive conditions. These effects likely compound neuromuscular impairments, exacerbating movement function. Unfortunately, conventional...journal article 2023
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Buitenhuis, R. N. (author), Saikumar, N. (author), Hassan HosseinNia, S. (author)The ever-increasing industry desire for improved performance makes linear controller design run into fundamental limitations. Nonlinear control methods such as Reset Control (RC) are needed to overcome these. RC is a promising candidate since, unlike other nonlinear methods, it easily integrates into the industry-preferred PID design...journal article 2023
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Buskes, V. F. (author), Kaczmarek, M.B. (author), Veenstra, J. C. (author), Coulais, C. (author), Hassan HosseinNia, S. (author)Metamaterials are artificial structures with properties that are rare or non-existent in nature. These properties are created by the geometry and interconnection of the metamaterial unit cells. In active metamaterials, sensors and actuators are embedded in each unit cell to achieve greater design freedom and tunability of properties after the...conference paper 2023
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Ravichandran, Rahul (author)CubeSats have risen in popularity since its first launch in the year 2003. The low mass, lower launch cost, lower development cost, possibility for piggyback with larger satellites and lower development time involved compared to larger satellites have opened them to be commercialised by private companies. In contrast to being used for...master thesis 2022
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Koene, Robbert (author)The compliance (stiffness) of a human arm varies, depending on the task at hand. Some precise tasks require high stiffness, while others need a level of flexibility to deal with unknown disturbances. To describe this human behaviour a portable device is needed to give small force perturbations (input) while the resulting reaction of the arm ...master thesis 2022
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Lv, Maolong (author), Li, Yongming (author), Pan, W. (author), Baldi, S. (author)This article proposes a fuzzy adaptive design solving the finite-time constrained tracking for hypersonic flight vehicles (HFVs). Actuator dynamics and asymmetric time-varying constraints are considered when solving this problem. The main features of the proposed design lie in 1) introducing a novel piecewise but differentiable switching...journal article 2022
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Classens, Koen (author), Mostard, Mike (author), Van De Wijdeven, Jeroen (author), Maurice Heemels, W. P.M.H. (author), Oomen, T.A.E. (author)The condition of mechatronic production equipment slowly deteriorates over time, increasing the risk of failure and associated unscheduled downtime. A key indicator for an increased risk for failures is the shifting of resonances. The aim of this paper is to track the shifting resonances of the equipment online and during normal operation....journal article 2022
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Tacx, Paul (author), Oomen, T.A.E. (author)Next-generation motion stages are envisaged to be lightweight to meet stringent demands regarding accuracy and throughput. The lightweight stage design implies flexible dynamical behavior, which is foreseen to be severely excited due to increasing acceleration forces. The aim of this paper is to exploit additional actuators and sensors to...journal article 2022
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van Haren, Max (author), Poot, Maurice (author), Portegies, Jim (author), Oomen, T.A.E. (author)Mechatronic systems have increasingly high performance requirements for motion control. The low-frequency contribution of the flexible dynamics, i.e., the compliance, should be compensated for by means of snap feedforward to achieve high accuracy. Position-dependent compliance, which often occurs in motion systems, requires the snap feedforward...conference paper 2022
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Li, Peng (author), Liu, Di (author), Baldi, S. (author)Adaptive integral sliding mode control (AISMC) is an extension of adaptive sliding mode control which is a way to ensure sliding motion while handling system uncertainties. However, conventional AISMC formulations require to different extent a priori knowledge of the system uncertainty: either the upper bound of the uncertainty or of its time...journal article 2022
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Alvarez, Marcos (author)The 3D-digitisation of precious cultural heritage artifacts is highly important for historical preservation purposes. Doing so can help mitigate against events such as tourism damage, natural disasters, and war. It also enables access to three-dimensional data for researchers of all disciplines all around the globe to study these artifacts at...master thesis 2021
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Roozendaal, Tjark (author)This report concerned the development of a soft robotic module for a seat pan, its optimization and application. The soft robotic module has an LED and photosensors for determining the distance of indentation and the passive force created by compressing the foam spring inside. An air pressure sensor is used to determine the active force created...master thesis 2021
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Beacom, Mitchell (author)In aerial manipulation, Unmanned Aerial Vehicles (UAVs) are equipped with manipulators to perform a variety of tasks such as inspections of critical infrastructure at heights. A fundamental issue is that the shaking forces and moments of the manipulator cause the UAV to tip-over and become unstable. Control based methods have been applied in...master thesis 2021
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van den Berg, Ronald (author)Cryogenic electron tomography (cryo-ET) is currently the golden standard for imaging cellular tissue at nanometer resolution. The current workflow from cultured cells to final image is however very time-consuming, labor-intensive, expensive, and has a low yield. Moreover, many of the steps in this workflow require practice. Even after practice,...master thesis 2021
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van Kol, T.V. (author), Jovanova, J. (author), Mohajeri, M. (author), Schott, D.L. (author)The advances of mechatronic system design and system integration have shown improvements in functionality, performance and energy efficiency in many applications across industries, from autonomous ground vehicles and drones to conveyor belts. This trend has been adopted in some industries more than others. The design of equipment to handle...conference paper 2021
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Karbasizadeh, Nima (author), Saikumar, N. (author), Hassan HosseinNia, S. (author)This paper proposes a fractional-order reset element whose architecture allows for the suppression of nonlinear effects for a range of frequencies. Suppressing the nonlinear effects of a reset element for the desired frequency range while maintaining it for the rest is beneficial, especially when it is used in the framework of a “Constant in...journal article 2021
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Saikumar, N. (author), Heinen, Kars (author), Hassan HosseinNia, S. (author)The ever-growing demands on speed and precision from the precision motion industry have pushed control requirements to reach the limitations of linear control theory. Nonlinear controllers like reset provide a viable alternative since they can be easily integrated into the existing linear controller structure and designed using industry...journal article 2021
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Čechanavičius, Vilius (author)EasyScan is a scanning system, which images the retina. The condition of the retina can help identify various diseases, such as glaucoma, diabetic retinopathy, cataract, macular degeneration and others. It is a commercially successful device that has sold thousands of units worldwide. However, the scanner is facing lifetime issues, as the...master thesis 2020
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Luiks, Harald (author)In 2024, a rover will leave Earth on a daring mission to explore Phobos, one of the two moons of Mars. Phobos has a severe thermal environment, with surface temperatures ranging from -153 °C to +57 °C and an 8-hour diurnal cycle. This work focuses on validating the performance of the locomotion system of the Mars Moon eXploration (MMX) rover....master thesis 2020