An efficient approach to optimize the vibration mode of ultrasonic motors

Author

Zhu, Hua ; Zhang, Jian-tao ; Zhao, Chun-sheng

Author_Institution

Precision Driving Lab., Nanjing Univ. of Aeronaut. & Astronaut., Nanjing

fYear

2008

fDate

5-8 Dec. 2008

Firstpage

575

Lastpage

580

Abstract

The electromechanical coupled dynamic model of the stator of the bar-type ultrasonic motor is derived based on the finite element method. The dynamical behavior of the stator is analyzed via this model and the theoretical result agrees with the experimental result of the stator of the prototype motor very well. Both the structural design principles and the approaches to meet the requirements for the mode of the stator are discussed. Based on the pattern search algorithm, an optimal model to meet the design requirements is established. The numerical simulation results show that this optimal model is effective for the structural design of the stator.

Keywords

electromechanical effects; finite element analysis; optimisation; stators; ultrasonic motors; vibrations; electromechanical coupled dynamic model; finite element method; optimization; pattern search algorithm; stator; structural design principles; ultrasonic motors; vibration mode; Aerodynamics; Algorithm design and analysis; Couplings; Finite element methods; Frequency; Mathematical model; Numerical simulation; Optimization methods; Stators; Vibrations; Ultrasonic motor; electromechanical coupled dynamic model; optimal design; pattern search algorithm;

fLanguage

English

Publisher

ieee

Conference_Titel

Piezoelectricity, Acoustic Waves, and Device Applications, 2008. SPAWDA 2008. Symposium on

Conference_Location

Nanjing

Print_ISBN

978-1-4244-2891-5

Type

conf

DOI

10.1109/SPAWDA.2008.4775856

Filename

4775856