Modal analysis of an electromechanical system: a hybrid behavior

Roberta Lima, Rubens Sampaio


Electromechanical systems are composed by two interacting subsystems, a mechanical and an electromagnetic. This paper discusses the oscillatory response of a linear electromechanical system. The objective of the paper is to show that the oscillatory response of the chosen electromechanical system is provoked by the mutual interaction between mechanical and an electromagnetic subsystems, and to compare this oscillatory response with the response of purely mechanical systems. Natural frequencies and normal modes, are computed for the electromechanical system. The computed parameters involve mechanical and electromagnetic variables, i.e., they are hybrid, a novelty in the literature. Hybrid model coordinates and frequency responses graphs are also discussed.


Electromechanical systems; natural frequencies; normal modes; resonance

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