A teeth-discretized electromechanical model of a traveling-wave ultrasonic motor
<p>This paper develops an electromechanical TWUSM (traveling-wave ultrasonic motor) model combining the driving circuit with the motor itself. An equivalent circuit model substituted for the piezoelectric ceramics is designed in the driving circuit model to obtain accurate input currents and p...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2020-07-01
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| Series: | Mechanical Sciences |
| Online Access: | https://ms.copernicus.org/articles/11/257/2020/ms-11-257-2020.pdf |
| Summary: | <p>This paper develops an electromechanical TWUSM (traveling-wave ultrasonic motor) model combining the driving circuit with
the motor itself. An equivalent circuit model substituted for the
piezoelectric ceramics is designed in the driving circuit model to obtain accurate input currents and powers. Then teeth discretization is
implemented in the stator–rotor contact model, which can calculate the interaction forces more accurately. After building the complete model of
TWUSM, a typical startup–stopping process is divided into five stages by evaluating the changes in contact status and driving forces. Finally, the fitness of transient responses of the rotor speed increasing from 55 % to
89 % shows that the proposed model fits better than the one without teeth discretization, and the experimental tests under various driving parameters
verify the effectiveness of the model.</p> |
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| ISSN: | 2191-9151 2191-916X |