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| Research on Operation Mechanics of Double-driving Feet Linear Ultrasonic Motor Using Bimorphs |
| Chen Qiang1,Xu Zhike2 |
| （1, School of Electric Power Engineering, Nanjing Institute of Technology, Nanjing 211167, China; 2, School of Electrical Engineering Southeast University， Nanjing 210096, China） |
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Abstract Operation mechanics of a new type linear ultrasonic motor is analyzed in this paper. It uses bimorphs and double-driving feet. The motor has the attribute of simple structure, no frequence degenerate and easy to miniaturize. The construction, vibration mode and operation principle are described. The vibratory response finite element model of the stator is established. The computation method of input impedance of the stator is presented, and the input impedance of the stator is computed. The vibration amplitude of the driving-feet’s contact points near the harmonic frequence is computed by the above model. The movement locus of the driving-feet’s contact points are carried out. The impedance characteristic of stator has been surveyed by using impedance characteristic analysis instrument, and the experimental results are compared with the theory analysis.
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Received: 01 January 1900
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2014, Vol. 33 
