Searched for: department:"Biomechanical%5C%2BEngineering"
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document
Bregman, D.J.J. (author), Van der Krogt, M.M. (author), De Groot, V. (author), Harlaar, J. (author), Wisse, M. (author), Collins, S.H. (author)
Background In stroke and multiple sclerosis patients, gait is frequently hampered by a reduced ability to push-off with the ankle caused by weakness of the plantar-flexor muscles. To enhance ankle push-off and to decrease the high energy cost of walking, spring-like carbon-composite Ankle Foot Orthoses are frequently prescribed. However, it is...
journal article 2011
document
Meijneke, C. (author), Kragten, G.A. (author), Wisse, M. (author)
The Delft Hand 2 (DH-2) is an underactuated robot hand meant for industrial applications, having six degrees of freedom (DoF), one actuator (DoA) and no sensors. It was designed to provide a cheap and robust hand to grasp a large range of objects without damaging them. The goal of this paper is to assess the design and performance of the DH-2,...
journal article 2011
document
Wisse, M. (author), Wilbers, F. (author), Meijneke, C. (author)
Artificial hand (1) suitable for robotic applications or as a prosthesis, comprising a frame (2) with a thumb (3) and at least two fingers (4,5), and having a motor drive (6) for adjusting the thumb and the fingers with respect to the frame, wherein the motor drive has a housing (7) and an axle (8) which is rotatably positioned within the...
patent 2011
document
Schuitema, E. (author), Caarls, W. (author), Wisse, M. (author), Jonker, P.P. (author), Babuska, R. (author)
Reinforcement Learning is a promising paradigm for adding learning capabilities to humanoid robots. One of the difficulties of the real world is the presence of disturbances. In Reinforcement Learning, disturbances are typically dealt with stochastically. However, large and infrequent disturbances do not fit well in this framework; essentially,...
conference paper 2010
document
Vermeulen, M. (author), Wisse, M. (author)
We present a design for a manipulator that is intrinsically mechanically safe, i.e. it can not cause pain (let alone damage) to a human being even if the control system has a failure. Based on the pressure pain thresholds for human skin, we derive a pinching safety constraint that limits the actuator torque, and an impact safety constraint that...
journal article 2010
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Karssen, J.G. (author), Wisse, M. (author)
Large disturbances can cause a biped to fall. If an upcoming fall can be detected, damage can be minimized or the fall can be prevented. We introduce the multi-way principal component analysis (MPCA) method for the detection of upcoming falls. We study the detection capability of the MPCA method in a simulation study with the simplest walking...
journal article 2008
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Hobbelen, D.G.E. (author), Wisse, M. (author)
Limit cycle walkers are bipeds that exhibit a stable cyclic gaitwithout requiring local controllability at all times during gait. A well-known example of limit cycle walking is McGeer’s “passive dynamic walking,” but the concept expands to actuated bipeds as involved in this study. One of the stabilizing effects in limit cycle walkers is the...
journal article 2008
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Van der Krogt, M.M. (author), Bregman, D.J.J. (author), Wisse, M. (author), Doorenbosch, C.A.M. (author), Harlaar, J. (author), Collins, S.H. (author)
Children with cerebral palsy frequently experience foot dragging and tripping during walking due to a lack of adequate knee flexion in swing (stiff-knee gait). Stiff-knee gait is often accompanied by an overly flexed knee during stance (crouch gait). Studies on stiff-knee gait have mostly focused on excessive knee muscle activity during (pre...
journal article
Searched for: department:"Biomechanical%5C%2BEngineering"
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