Abstract
Linear oscillating machines are electric devices that reciprocate at a specific frequency and at a specific stroke. Because of their linear motion, they are used in special applications, such as refrigerators for home appliances and medical devices. In this paper, the structure and electromagnetic characteristics of these linear oscillating machines are investigated, and the stroke is calculated according to voltage and motion equations. In addition, static and transient behavior analysis is performed, considering mechanical systems such as springs, damping systems, and mover mass. Furthermore, in this study, the magnetic force is analyzed, experiments are conducted according to the input power, and the current magnitude and stroke characteristics are analyzed according to the input frequency. Finally, the study confirmed that the most efficient operation is possible when the electrical resonance frequency matches the resonance frequency of the linear oscillating machines.
Highlights
Linear oscillating machines (LOMs) are electric devices that reciprocate at a specific frequency and at a specific stroke
Because of their linear motion, they are used in special applications, such as refrigerators for home appliances, and medical devices
The moving-core-type LOM has the advantage of being able to increase the permanent magnet usage and the output; the price of such LOMs increases with the increase in magnet usage
Summary
Linear oscillating machines (LOMs) are electric devices that reciprocate at a specific frequency and at a specific stroke. Because of their linear motion, they are used in special applications, such as refrigerators for home appliances, and medical devices. Most LOMs used in practical applications are of the moving-magnet type, in which the mover is light and suitable for high-speed operation; this is the most efficient method of increasing LOM output [1–5]. Various researchers have conducted experimental studies on the electromagnetic force and output of LOMs [10–12]. The structural and electromagnetic characteristics of a moving-magnet-type LOM were determined and Machines 2022, 10, 48 verification.
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