Searched for: author%3A%22Vallery%2C+H.%22
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Zhang, Junhao (author), Muijzer, Frodo (author), Vallery, H. (author), Veltink, Peter H. (author)
Angular momentum, kinetics, and energetics, including total mechanical energy and its rate of change in relation to power exchange, are important quantities when analyzing human motion in sports, physical labor, and rehabilitation. Inertial measurement units (IMU)-based motion capture (MOCAP) systems provide a portable solution for the...
journal article 2024
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Zillen, Eva (author), van der Windt, B. (author), Vallery, H. (author), Smit, G. (author)
Background: Pneumatic actuators are widely used in applications like (medical) robots, or prostheses. Pneumatic actuators require a complex manufacturing process and are produced in standardized dimensions to reduce costs. Over the last decade 3D-printing has emerged as a cost-effective and efficient production method in medical applications....
journal article 2024
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Sterke, B.T. (author), Poggensee, K. (author), Ribbers, G.M. (author), Lemus Perez, D.S. (author), Vallery, H. (author)
Falling is a major cause of morbidity, and is often caused by a decrease in postural stability. A key component of postural stability is whole-body centroidal angular momentum, which can be influenced by control moment gyroscopes. In this proof-of-concept study, we explore the influence of our wearable robotic gyroscopic actuator “GyroPack” on...
journal article 2023
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Stenger, David (author), Reuscher, Tim (author), Vallery, H. (author)
Climate-controlled cabins have for decades been standard in vehicles. Model Predictive Controllers (MPCs) have shown promising results in achieving temperature tracking in vehicle cabins and may improve upon model-free control performance. However, for the multi-zone climate control case, proper controller tuning is challenging, as externally...
conference paper 2023
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Zhang, Haoming (author), Wang, Zhanxin (author), Vallery, H. (author)
The global navigation satellite systems (GNSS) play a vital role in transport systems for accurate and consistent vehicle localization. However, GNSS observations can be distorted due to multipath effects and non-line-of-sight (NLOS) receptions in challenging environments such as urban canyons. In such cases, traditional methods to classify...
conference paper 2023
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Vallery, H. (author), Lachmann, F. (author), van der Helm, S.G. (author), Pennycott, A. (author), Smit, G. (author)
Standing up using one leg is a challenging task for those with a transfemoral amputation, particularly for elderly users with a low activity level. Active prostheses are generally not accessible to this group and available passive prostheses do not support standing up. This article presents the design and evaluation of the “Energy Restoring...
journal article 2023
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Guffanti, Diego (author), Lemus Perez, D.S. (author), Vallery, H. (author), Brunete, Alberto (author), Hernando, Miguel (author), Horemans, H.L.D. (author)
Three-dimensional (3D) cameras used for gait assessment obviate the need for bodily markers or sensors, making them particularly interesting for clinical applications. Due to their limited field of view, their application has predominantly focused on evaluating gait patterns within short walking distances. However, assessment of gait...
journal article 2023
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Jabeen, S. (author), Baines, P.M. (author), Harlaar, J. (author), Vallery, H. (author), Berry, Andrew (author)
Balance recovery after tripping often requires an active adaptation of foot placement. Thus far, few attempts have been made to actively assist forward foot placement for balance recovery employing wearable devices. This study aims to explore the possibilities of active forward foot placement through two paradigms of actuation: assistive...
journal article 2023
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Botonis, Olivia K. (author), Harari, Yaar (author), Embry, Kyle R. (author), Mummidisetty, Chaithanya K. (author), Riopelle, David (author), Giffhorn, Matt (author), Albert, Mark V. (author), Vallery, H. (author), Jayaraman, Arun (author)
Background: Falls are a common complication experienced after a stroke and can cause serious detriments to physical health and social mobility, necessitating a dire need for intervention. Among recent advancements, wearable airbag technology has been designed to detect and mitigate fall impact. However, these devices have not been designed...
journal article 2022
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Blok, Janneke (author), Poggensee, K. (author), Lemus Perez, D.S. (author), Kok, M. (author), Pangalila, Robert F. (author), Vallery, H. (author), Deferme, Jolien (author), Toussaint-Duyster, Leontien (author), Horemans, H.L.D. (author)
Trunk motor control is essential for the proper functioning of the upper extremities and is an important predictor of gait capacity in children with delayed development. Early diagnosis and intervention could increase the trunk motor capabilities in later life, but current tools used to assess the level of trunk motor control are largely...
conference paper 2022
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Prasanth, H. (author), Caban, Miroslav (author), Keller, Urs (author), Courtine, Grégoire (author), Ijspeert, Auke J. (author), Vallery, H. (author), Von Zitzewitz, Joachim (author)
Gait analysis has traditionally been carried out in a laboratory environment using expensive equipment, but, recently, reliable, affordable, and wearable sensors have enabled integration into clinical applications as well as use during activities of daily living. Real-time gait analysis is key to the development of gait rehabilitation techniques...
journal article 2021
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Joosten, Sebastiaan (author), Radaelli, G. (author), Vallery, H. (author)
Inspired by phenomena in the plant world, a meteoro-sensitive rotational actuator is developed. The design uses a hygro-active shell, whose water-based swelling is restricted at selective locations to form a helicoid structure. The influence of geometrical parameters on the performance is investigated using a numerical analysis of various...
journal article 2021
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Detailleur, Alvaro (author), Umans, Sachin (author), Van Even, Herbert (author), Pennycott, A. (author), Vallery, H. (author)
Building upon recent advancements in linear electroadhesive clutch materials and performance, this paper examines the feasibility of a self-reinforcing electroadhesive rotational clutch using a simple model. The design aims to deliver improvements in applications where performance is limited by the torque-to-power and torque-to-mass ratios...
conference paper 2021
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Bjelonic, Marko (author), Sekoor Lakshmana Sankar, Prajish (author), Dario Bellicoso, C. (author), Vallery, H. (author), Hutter, Marco (author)
Wheeled-legged robots have the potential for highly agile and versatile locomotion. The combination of legs and wheels might be a solution for any real-world application requiring rapid, and long-distance mobility skills on challenging terrain. In this paper, we present an online trajectory optimization framework for wheeled quadrupedal robots...
journal article 2020
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Lemus Perez, D.S. (author), Berry, Andrew (author), Jabeen, S. (author), Jayaraman, Chandrasekaran (author), Hohl, Kristen (author), van der Helm, F.C.T. (author), Jayaraman, Arun (author), Vallery, H. (author)
Gyroscopic actuators are appealing for wearable applications due to their ability to provide overground balance support without obstructing the legs. Multiple wearable robots using this actuation principle have been proposed, but none has yet been evaluated with humans. Here we use the GyBAR, a backpack-like prototype portable robot, to...
journal article 2020
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Apte, S. (author), Plooij, M.C. (author), Vallery, H. (author)
BACKGROUND: Gait training with partial body weight support (BWS) has become an established rehabilitation technique. Besides passive unloading mechanisms such as springs or counterweights, also active systems that allow rendering constant or modulated vertical forces have been proposed. However, only pilot studies have been conducted to...
journal article 2020
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Vertongen, J. (author), Kamper, Derek G. (author), Smit, G. (author), Vallery, H. (author)
The large interest in robot hands and active hand prostheses has in recent years been joined by that in active hand orthoses. Despite the differences in intended uses, these three categories of artificial hand devices share key characteristics. Examination of the commonalities could stimulate future design. Thus, in this article, we undertook...
journal article 2020
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Chen, X. (author), Tan, X. (author), Berselli, G. (author), Chen, X. (author), Clayton, G. (author), Jeon, S. (author), Karimi, H. R. (author), Katsura, S. (author), Kober, J. (author), Vallery, H. (author)
Editorial - Since the official registration of the word “Mechatronics” as a trademark by Yaskawa Electric Corporation in 1971, explosive growth has been observed in mechatronics research and product development activities. Nowadays, mechatronics and mechatronic design methodologies play increasingly important roles in computer, communication,...
contribution to periodical 2020
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Schumacher, C.A. (author), Berry, Andrew (author), Seyfarth, André (author), Vallery, H. (author)
Previous research has identified two major non-stepping strategies used to recover balance following mechanical perturbations: ankle and hip strategy [1, 2]. These strategies are selected depending on eg the perturbation magnitude, prior experience, and configuration of the support surface [2] in order to control the posture (upright trunk and...
abstract 2019
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Penalver-Andres, Joaquin (author), Duarte, Jaime (author), Vallery, H. (author), Klamroth-Marganska, Verena (author), Riener, Robert (author), Marchal-Crespo, Laura (author), Rauter, Georg (author)
One key question in motor learning is how the complex tasks in daily life - those that require coordinated movements of multiple joints - should be trained. Often, complex tasks are directly taught as a whole, even though training of simple movement components before training the entire movement has been shown to be more effective for...
conference paper 2019
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