Numerical Modal Analysis of Vibrations in a Three-Phase Linear Switched Reluctance Actuator

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ID: 84548
2017
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Abstract
This paper addresses the problem of vibrations produced by switched reluctance actuators, focusing on the linear configuration of this type of machines, aiming at its characterization regarding the structural vibrations. The complexity of the mechanical system and the number of parts used put serious restrictions on the effectiveness of analytical approaches. We build the 3D model of the actuator and use finite element method (FEM) to find its natural frequencies. The focus is on frequencies within the range up to nearly 1.2 kHz which is considered relevant, based on preliminary simulations and experiments. Spectral analysis results of audio signals from experimental modal excitation are also shown and discussed. The obtained data support the characterization of the linear actuator regarding the excited modes, its vibration frequencies, and mode shapes, with high potential of excitation due to the regular operation regimes of the machine. The results reveal abundant modes and harmonics and the symmetry characteristics of the actuator, showing that the vibration modes can be excited for different configurations of the actuator. The identification of the most critical modes is of great significance for the actuator’s control strategies. This analysis also provides significant information to adopt solutions to reduce the vibrations at the design.
Reference Key
salvado2017numericalmodelling Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Salvado, José;Calado, Maria do Rosário;Santo, António Espírito;Guerman, Anna;
Journal modelling and simulation in engineering
Year 2017
DOI
DOI not found
URL
http://dx.doi.org/10.1155/2017/3258376
Keywords
microscopy Engineering (General). Civil engineering (General) Technology Electrical engineering. Electronics. Nuclear engineering Descriptive and experimental mechanics Science physics motor vehicles. aeronautics. astronautics mathematics electronic computers. computer science mining engineering. metallurgy transportation and communications astrophysics cellular telephone services industry. wireless telephone industry geodesy canals and inland navigation. waterways

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