Numerical modal analysis of vibrations in a three-phase linear switched reluctance actuator
| Autor: | Anna D. Guerman, Maria do Rosario Calado, António Espírito Santo, José Salvado |
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| Přispěvatelé: | uBibliorum |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Engineering
Article Subject Modal analysis 02 engineering and technology 01 natural sciences lcsh:QA75.5-76.95 Normal mode Control theory Electric machinery 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Electromagnetic vibration Linear switched reluctance actuators 010302 applied physics business.industry Modal analysis using FEM 020208 electrical & electronic engineering General Engineering Linear actuator Finite element method Switched reluctance motor Computer Science Applications Vibration Modeling and Simulation lcsh:Electronic computers. Computer science Vibration analisys Actuator business Acoustic noise |
| Zdroj: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) Agência para a Sociedade do Conhecimento (UMIC)-FCT-Sociedade da Informação instacron:RCAAP Modelling and Simulation in Engineering, Vol 2017 (2017) |
| Popis: | 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. info:eu-repo/semantics/publishedVersion |
| Databáze: | OpenAIRE |
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