Abstract：
:In general, the design and analysis of ultrasonic motor and motor's control strategy are based on mathematical model. The academic model is widely used in the analysis of traveling wave ultrasonic motor (TWUSM). But the dispersive characteristic of piezoelectric ceramics and other complicated process, such as the friction, make the model's precision not so accurate. On the other hand, identification modeling method, which is built based on the tested data, has obtained increasing application in the study of ultrasonic motor's control technology. Based on the identification model, many control strategies can be designed easily. But the identification model is an approximate model, so if a more accurate model of ultrasonic motor can be obtained, the analysis and design of motor control system will be more effective. Characteristic model is a kind of identification model which can accurately describe the characteristics of TWUSM. Based on the tested data, this paper proposes the modeling method of ultrasonic motor's characteristic model. The paper also makes a comparison of the effectiveness of different identification algorithms. Aiming at the speed control of ultrasonic motor, the influence of the parameter's initial values on the precision of model is discussed. The calculating results indicate the availability of this characteristic model.
journal_name
Ultrasonicsjournal_title
Ultrasonicsauthors
Jingzhuo S,Dongmei Ydoi
10.1016/j.ultras.2013.09.012subject
Has Abstractpub_date
2014-02-01 00:00:00pages
725-30issue
2eissn
0041-624Xissn
1874-9968pii
S0041-624X(13)00272-2journal_volume
54pub_type
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