Searched for: contributor%3A%22Herder%2C+J.L.+%28mentor%29%22
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Sebek, P. (author)
Delmic's SECOM platform integrates an optical microscope in a scanning electron microscope. A flexure based scan stage has been designed and produced to be used in the next generation of the SECOM platform. However, the reaction forces of the scan stage produce vibrations in the platform. These vibrations negatively affect the position accuracy...
master thesis 2015
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Lustig, M.P. (author)
This research is focused on designing a close-to-body statically balanced mobile arm support for people suffering from degenerative muscular conditions. The arm support is based on a spring system consisting of two bi-articular zero-free-length springs to balance the arm.
master thesis 2015
document
Boersma, S. (author)
Modelling of the behaviour of compliant mechanisms leads to a better understanding and synthesis of designed mechanisms. Static and dynamic responses for compliant mechanisms have been researched extensively. While impact modelling is a well known field in rigid body dynamics, impact modelling in compliant mechanisms research is lacking. By...
master thesis 2015
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Diepens, T. (author)
Optimization in engineering could and should be used for more than just optimizing performance of mechanisms. In a world with growing environmental pressure and increasing scarcity of materials, thinking about how we could make better use of materials becomes more and more important. This is where optimization could be used to make sure...
master thesis 2015
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Steinthorsson, A.T. (author)
Compliant mechanisms (CM) are a growing part of many different fields from MEMS to surgical devices. They offer a solution to classical mechanical drawbacks, such as friction, backlash, lubrication and assembly. One particular field of application concentrates on stiffness balance, also known as static balancing(SB), of mechanical systems. This...
master thesis 2015
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Weeke, S.L. (author)
master thesis 2014
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Verweij, A.G. (author)
During rough sea conditions, vessel motions prevent people to be transferred safely from one ship to another. To increase accessibility, the Ampelmann system has developed a Ship to Ship (S2S) transfer system . The Ampelmann system is a ship-based, self stabilizing platform that actively compensates all vessel motions using a Stewart platform....
master thesis 2014
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Stroo, J.L. (author)
People with neuromuscular diseases request an orthosis close to the body for assistance with their arm movements. This paper proposes a concept for a passive arm support that is close to the body and is based on bending beams. Simulations resulted in the final configuration and dimensions of the beams, optimised to balance an arm. One Carbon...
master thesis 2014
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Steenbergen, R. (author)
People with a neuromuscular disease have to deal with decreasing muscle force as their disease progresses. Muscles around the head and neck are weakened too. As a consequence it becomes energy consuming to keep their head and neck in a forward bended position. For instance during reading, eating or doing computer work. This study proposes an...
master thesis 2014
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Zondervan, A. (author)
A trend in metrology is the development of optical sensors. These types of sensors benefit of the minimum interaction of light with standard noise sources (e.g. electric fields) and the high carrier frequency (THz) - allowing for more accurate measurements than with conventional electronic sensors. The use of a laser and an optical fiber to...
master thesis 2014
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Waumans, A.A. (author)
Research over the last years has shown that discomfort for surgeons in the operating room is a pertinent problem. In reaction to this, this design project aims to come up with a device that respects the surgeon’s autonomy, yet results in sufficient support of the user’s body. The design proposal consists of two modules: an upper module and a...
master thesis 2014
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Groenewegen, M.W.M. (author)
Highly advanced robotic hand prostheses are praised for their impressive grasping and pinching capabilities. Nevertheless, a high demand remains for grasping mechanisms that are cheaper to produce, easier to assemble and lower in overall maintenance. In this paper, the idea of creating a 3D printable underactuated grasper was realized to fulfill...
master thesis 2014
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KleinJan, J.G. (author)
Ultra-compact is a valuable property in designs of assistive devices for people with Duchenne Muscle Dystrophy. Reducing the size of these medical devices will increase the cosmetic appearance. Current devices are large and stigmatizing in the eyes of the users. In other words, the users want a device to be small enough to be worn underneath the...
master thesis 2013
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Ypma, W.J.B. (author)
This thesis describes the design process for an iso-frequent oscillator. Instead of designing the perfect linear spring for a harmonic oscillator, non-linearities in the force deflection behavior of the spring are allowed. These inperfections are then compensated by propper transmission design.
master thesis 2013
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Lobo-Prat, J. (author)
Currently, many different control interfaces for the operation of active movement-assistive device exist but their respective performance capabilities and limitations remain unclear. The goal of this study was to quantitatively evaluate the performance and learning characteristics of EMG-, force- and hand joystick-based interfaces. The human...
master thesis 2013
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Wever, J.W.M. (author)
A force illusion device is a portable mechanism that generates the illusion of an external force applied on the device. It has potential applicability as a navigation aid for blind or visually impaired people. Force illusion devices that use a cyclic translating mass to generate the illusion have one drawback. Their users will feel a moment...
master thesis 2013
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Bakker, D.L. (author)
Continuum manipulators are high degree of freedom structures that can use their increased degrees of freedom to navigate through an environment with obstacles. This type of manipulator is underactuated, which make them promising for adapting to their environments. However, current research is mainly focused on accurate positioning and obstacle...
master thesis 2013
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Van Dongen, J. (author)
Technologies exist that equilibrate the effects of gravity; however there are limitations to these technologies. Spring based gravity equilibrators require an always present vertical reference, while in some cases, like devices worn on the human body there is no part that is always vertical. The goal of this paper is to conceptualize, build and...
master thesis 2013
document
Heldoorn, T.A. (author)
In this paper the design of a passive self-levelling device is presented. Self-levelling means that the device adjusts itself to compensate for inclinations of the floor without user intervention. This has the advantage that a single device can be used on floors with various inclinations without losing its functionality. First an analysis is...
master thesis 2013
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Goemans, V.Y. (author)
For large-displacement mechanisms, such as underactuated fingers, the out-of-plane stiffness can pose problems, especially as it tends to vary over the in-plane range of motion. In this paper a method is presented to design compliant underactuated fingers using topology optimization with a focus on obtaining a desired out-of-plane stiffness...
master thesis 2013
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