Searched for: subject%3A%22tunable%255C%252Bmagnets%22
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document
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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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
document
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
document
Hoekwater, William (author)
To achieve high motion accuracy and repeatability for a variable reluctance tunable magnet actuator that uses linear controllers, this article proposes a novel actuator design that has a linearized force-flux relation. Prior designed variable reluctance tunable magnet actuators use a C-shaped actuator that has a quadratic relation between the...
master thesis 2022
document
Viëtor, Silvan (author)
Actuator self-heating limits achievable force and can cause unwanted structural deformations that adversely affect the accuracy in precision actuation systems. This is especially apparent in quasi-static applications that require the actuator to maintain a stable position over an extended period. As a solution, we propose the use of Tunable...
master thesis 2018
Searched for: subject%3A%22tunable%255C%252Bmagnets%22
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