期刊
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
卷 225, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijmecsci.2022.107363
关键词
Piezoelectric; Actuator; Dynamical model; Wiring methods
资金
- National Natural Science Foundation of China [51507154]
- Zhejiang Provincial Natural Science Foundation of China [LY19E050010, LQ21E050013]
- Zhejiang Provincial Key Research and Development Project of China [2021C01181]
- Zhejiang Normal University 2021 Experimental Technology Development Project Item [SJ202120]
This paper aims to establish and analyze the theoretical model of the converse wiring method of the piezoelectric inertial actuator based on asymmetrically clamping principle, in order to improve the stability and positioning accuracy of the actuator. Through experiments and simulations, the output characteristics of the actuator under the converse wiring method and the relationship between frictional force and velocity are revealed. Furthermore, the fundamental mechanism of achieving no backward motion and high stability in the actuator under the converse wiring method is explained from a theoretical perspective.
The converse wiring method of piezoelectric inertial actuator (PIA) based on asymmetrically clamping principle is used to overcome backward motion phenomenon, which is essential for improving the stability and positioning accuracy of actuator. However, the theoretical researches performed for the driving technology with the novel converse wiring method is scarce at present. To remedy this shortage, a theoretical model of the above mentioned method is proposed to analyze its dynamic characteristics and output performances comprehensively by comparing the theoretical model with traditional direct wiring method for the first time. In this work, the physical models, mathematical models and simulation models of the actuator under two wiring methods are established and analyzed. LuGre friction model using in Simulink has been further modified to simulate the frictional force of the actuator more accurately. With a series of experimental results of output characteristics, the simulation models and each internal subsystem are verified. On this basis, the relationships between resultant force and velocity, frictional force and velocity are revealed theoretically. Besides, the essential mechanism that the actuator can achieve no backward motion and high stability under the converse wiring method is explained from a theoretical perspective. This work provides theoretical guidance for the design and optimization of actuators, contributing to the exploration of internal mechanism and the establishment of a systematic and universal theoretical model for PIA.
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