Searched for: contributor%3A%22Hassan+HosseinNia%2C+S.+%28mentor%29%22
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Hao, Bochen (author)
In the semiconductor industry, the demand for a continuously higher throughput puts tough requirements on the force capacity and accuracy of actuators. Reluctance actuators, as a promising alternative to the present state-of-the-art Lorentz actuators, are capable of achieving much higher force densities. On the other hand, reluctance actuators...
master thesis 2023
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Mian, Osama (author)
Vibrations have been studied in various engineering fields due to their detrimental and even destructive effects on structures. Suppressing low-frequency vibrations has been a research challenge for decades and is mostly achieved by implementing active vibration control techniques. In the last two decades, the emergence of locally resonant...
master thesis 2023
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Liu, Yixuan (author)
Linear time-invariant (LTI) controllers suffer from inherent limitations as the waterbed effect and Bode's gain-phase relationship. Reset control, a nonlinear strategy involving the reset of linear controllers, offers a potential solution to overcome these traditional LTI limitations. Based on the describing function analysis, the reset...
master thesis 2023
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Puthukattil, Rahul (author)
This thesis investigates the application of force control techniques to enhance industrial wire bonding processes. It entails the design of a simulation model for the Z-axis interaction between bondhead and environment, followed by the implementation of a Parallel Force Control architecture in Simulink. The study evaluates different force and...
master thesis 2023
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Koshy Cherian, Jeswin (author)
Drifting, a specialized form of sideslip control, involves intentionally inducing and maintaining a state of oversteer for lateral sliding of the vehicle. While previous research has primarily focused on autonomous drift control, the integration of the driver in the control loop remains largely unexplored. This thesis aims to explore how a...
master thesis 2023
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Natu, Aditya (author)
Integrating compliant mechanisms into high-precision motion systems has facilitated the development of lightweight and frictionless designs. However, these systems often face challenges related to low-frequency parasitic resonance modes and limited structural damping, leading to compromised position accuracy and restricted control bandwidth....
master thesis 2023
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Fan, Shiyu (author)
This research presents a novel data-based modal control method for actively dampening the flexible mode in a multi-input multi-output (MIMO) system. Traditional passive damping methods add significant mass to the system, making recent advances in sensor and actuator technology, such as lightweight piezoelectric materials, a more appealing...
master thesis 2023
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Swank, Tim (author)
To increase the accuracy of high-precision motion systems, the heat dissipation in electromagnetic actuators must be reduced to limit thermal expansion. Variable Reluctance Actuators have a high-frequency bandwidth but suffer from heating when providing high forces for sustained periods of time. Tunable Magnet Actuators can provide a large force...
master thesis 2023
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Verhoog, Castor (author)
Vibration attenuation in lightly damped blade-like systems such as cantilevers or end-effectors of robot manipulators can be dampened using Active Vibration Control (AVC). Piezoelectric patches in a collocated setup measure and control the bending modes of such a cantilever system using Positive Position Feedback (PPF). Tuning methods for PPF...
master thesis 2023
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Coatto, Francesco (author)
Undesired vibrations are one of the most significant sources of error in any type of mechatronic system or component. The emerging field of elastic (locally resonant) metamaterials offers a viable solution to successfully suppress these by generating bandgaps in both resonant and non-resonant regions. In this thesis, metamaterials in a sensor...
master thesis 2023
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van de Ketterij, Dennis (author)
Inherent limitations of linear control, including PID, are Bode's phase-gain relationship and the waterbed-effect. Literature showed that reset control can overcome these limitations. The 'Constant in Gain, Lead in Phase' (CgLp) reset element was developed, which can be used in combination with a conventional PID approach. The benefit is that...
master thesis 2023
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Ronæs, Endre (author)
This report presents two different methods for controlling the remnant magnetisation state of a permanent magnet within a Hybrid Tunable Magnet Actuator. Addressing, individually, the desire for optimum energy efficiency and control accuracy. The purpose of this actuator is to track a quasi-static position reference without continuous thermal...
master thesis 2023
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Kouwenhoven, Timo (author)
A novel nonlinear stiffness unit cell aided magnetic gravity compensator is proposed for the purpose of isolating low-frequency vibrations. A negative stiffness magnet setup is combined with a compliant unit cell with tailored nonlinear force-displacement characteristics. This combination offers a large range of motion featuring low stiffness, a...
master thesis 2022
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de Bruin, Pim (author)
To improve Active Vibration control methods like Independent Modal Space Control (IMSC), an estimate of the modal contribution of vibrational eigenmodes of compliant structures is required. In this work, three Recursive Bayesian input and state estimation algorithms previously introduced in civil engineering are evaluated for use on on high-tech...
master thesis 2022
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Bosscher, Leon (author)
The use of passive viscoelastic damping and active piezoelectric damping in a hybrid side-by-side configuration is explored in this paper. The goal is to combine the strengths of both individual methods to achieve better damping performance when targeting a single eigenmode or multiple resonances. It is found that a hybrid configuration where a...
master thesis 2022
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El Ajjaj, Manal (author)
Vibration suppression of flexible end-effectors has become one of the great challenges within the semiconductor industry to achieve the precision required to produce chips. These end-effectors tend to be prone to vibrations due to their lightweight design and low thickness, whilst they still should have high accuracy and precision. This...
master thesis 2022
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Caporale, Daniel (author)
Linear time-invariant controllers are undoubtedly the most popular type of regulators used in industrial applications, with the overwhelming majority of companies employing them. The reason is mainly given by their simple design methods. In particular, frequency domain predictive performance analysis and stability methods allow the use of...
master thesis 2022
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Marega, Giovanni (author)
The most problematic eigenmode in machines involving flexure mechanisms is represented by flexural modes. However, it can be noticed that also out-of-plane modes, that occur in the space outside the nominal plane of movement of the mechanism, can be very important, especially in machines with several and coupled degrees of freedom, like 3D...
master thesis 2022
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Wiersema, Jasper (author)
In this thesis, the accuracy and efficiency of Magnetization State (MS) tuning in Tunable Magnet Actuators (TMAs) is investigated. TMAs are developed to improve thermal stability in quasi-static precision actuation applications. First, the operating principles of TMAs and limitations in previous work are discussed respectively. It is found that...
master thesis 2022
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Naber, Rutger (author)
Going beyond naturally occurring materials, Metamaterials exploit a design at the microscale resulting in macroscopic behaviour, to achieve different or even new properties that can have a wide range of applications. By incorporating sensors, actuators and control, Robotic Metamaterials can achieve even more extremely different behaviour such as...
master thesis 2022
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