Abstract
In this paper, an enhanced equivalent circuit model of a rotary traveling
wave piezoelectric ultrasonic motor "shinsei type USR60" is derived. The
modeling is performed on the basis of an empirical approach combined with the
electrical network method and some simplification assumptions about the physical
behavior of the real system. This paper highlights the importance of the
electromechanical coupling factor, which is responsible for the electrical to
mechanical energy conversion. The emphasis is put on the difference between the
effective coupling factor and the modal coupling factor. The effect of the
temperature on the mechanical resonance frequency is considered and thereby
integrated in the final model for long term operations.
Original language | Danish |
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Publication status | Published - 2000 |