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Rotteveel, Bryan (author)
In this paper, the implementation of an active unit-cell metamaterial used for vibration control is discussed. The active unit-cell metamaterial is designed for implementation in a hexapod strut. As each of the unit-cells can be sensed and actuated, over-sensing and over-actuation are introduced in the system. This can be used to create...
master thesis 2022
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Godfroid, Tijmen (author)
The high-tech industry is constantly searching for methods to make more efficient, more accurate, and faster machines. One of the methods to improve the performance of these machines is active vibration control(AVC) which can help to achieve faster transient responses. One of the ways to achieve this is better controllability which means more...
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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Rietmeijer, Stijn (author)
Vibration energy harvesting is a growing field of research. Harvesting energy from vibrations can be of use in devices in hard to reach places, such as sensors on a train track or a pacemaker. These devices makes use of batteries, which need to be replaced. Using energy harvesting this battery life could be improved. <br/>The difficulty lies in...
master thesis 2022
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Willemen, Ruben (author)
The absolute and relative stability are critical aspects of designing Controlled Motion Systems (CMS). The maximum attainable CMS performance depends highly on the design of the structural part and the actuator and sensor configuration, as mechanical vibrations can endanger stability. This thesis presents a method for designing CMS's using...
master thesis 2022
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Friederich, Bart (author)
This research proposes and validates a novel grasping principle to be able to set caging grasps in cluttered environments. A prototype is designed making use of manoeuvering fingers which propagate along the object surface and are covered with everting belts to minimize slip and thus friction forces on the object and environment. Using several...
master thesis 2022
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Norder, Lucas (author)
Conventional Topology Optimization (TO) enables the inverse design of nanophotonic structures by specifying the objective and constraints without a predefined topological concept. Yet, extreme scenarios such as the design of a...
master thesis 2022
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Mora Benitez, Christian (author)
Fused deposition modeling (FDM) is one of the fastest-growing additive manufacturing processes in recent years. Nevertheless, the mechanical properties cannot be matched to those of traditional manufacturing methods such as injection molding.The research presented in this report aims to demonstrate the limitations of fusion deposition models and...
master thesis 2022
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Ahmad, Hanzalah (author)
Active materials are a type of material that can respond to external stimuli and change their physical properties as a response. Neutrally stable compliant mechanisms are a class of compliant mechanisms that use the flexibility of their members to deform and maintain that deformed configuration without requiring external work. In order to make a...
master thesis 2022
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Meij, Joep (author)
Limited stroke automatic watch winding poses a challenge due to the proof mass range being smaller than the input displacements. Traditionally the proof mass is connected to the mainspring by a linear reduction transmission however this setup only functions effectively for specific accelerations. This paper proposes to use a nonlinear...
master thesis 2022
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Moliner Brotons, A. (author)
In high-precision complex mechatronic devices, specifications are mostly affected by the contribution of several disciplines. Thus, in order to facilitate the fulfilment of the specifications, it is crucial to have a well-defined requirement for each sub-system during the entire design process. Model based system engineering (MBSE) is a...
master thesis 2021
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Otto, Martijn (author)
The ever-growing demand for smaller microchip feature sizes and thus more powerful chips, has fuelled innovation in photolithography machines for decades. Currently, within this context, one possibility that is explored at ASML involves an increase in the number of alignment markers on a wafer, for a more accurate mapping of local wafer...
master thesis 2021
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Cleijpool, Bram (author)
The detachment of a product from a suction cup gripper is a challenge that emerged in recent years in the high-speed case packing of packaged food. In this industry suction cups are used to temporarily attach a product to a case packing robot. The detachment of products from the suction cup gripper threatens throughput. In, some cases, the...
master thesis 2021
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van Houten, Aris (author)
Compliant mechanisms and decoupled parallel mechanisms are topics of high interest. The combination has been manifested for lower-mobility mechanisms, yet not attempted for higher degrees of freedom. The scarcity is countered by designing a decoupled compliant spherical parallel mechanism (DCSPM), having three independent rotational degrees of...
master thesis 2021
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van der Lans, Daan (author)
Elastically neutrally stable structures are compelling within the field of compliant mechanisms, since no force is required to deform them. Several examples of this state of elastic neutral stability exist, which often use equal but opposing structures to balance internal forces. This thesis is on the design of an active neutrally stable...
master thesis 2021
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Nieuwland, Marsha (author)
Vibration energy harvesters have been proposed as a solution to increase the lifetime of wireless and portable medical devices. One example of implantable medical devices for which energy harvesters could be interesting, are pacemakers. With a lifespan of about 6 to 12 years, the battery must be replaced after this period of time. Using an...
master thesis 2021
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Saravana Jothi, Navin Shankar (author)
Metamaterials are engineered structures that exhibit exotic properties that are obtained from the unit cell geometry and arrangement instead of its constituent materials. Mechanical metamaterials alter mechanical stimuli and they can exhibit unique elastic properties such as negative stiffness, shear modulus, bulk modulus, and Poisson’s ratio....
master thesis 2021
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Haasnoot, Jelle (author)
Bicycle simulator research has been the subject of considerable research, however, few of these attempts have integrated direct balance control and enough freedom of motion to deliver a real-world kinematic cycling experience. In this study, the B.I.K.E. (Bicycle Intrinsic Kinematics Emulator) system, a kinematic bicycle simulator, is developed...
master thesis 2021
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Knipscheer, Cassey (author)
Curved crease origami (CCO) is a newer, interesting field in origami mechanisms. The surfaces on CCO can be bent to initiate folding, thus allowing for the use of planar bending actuation. In this work, the use of more or less of the available actuation surface of CCO is explored. This is done by heating a bilayer material made of paper and...
master thesis 2021
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SEKAR, SANJAY ARUN (author)
By embedding actuators and sensors in passive structures, it will be possible to realize more functional machines, enabling the enhanced performance capabilities of high-tech machines. While developments in printed structures and electronics are reaching application maturity, only the first signs of feasibility for the printing of actuators and...
master thesis 2021
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