A fully dynamic model of a multi-layer piezoelectric actuator incorporating the power amplifier. (2nd November 2017)

• Record Type: Journal Article
• Authors: Zhu, Wei; Yang, Fufeng; Rui, Xiaoting
• Is Part Of: Smart materials and structures. Volume 26:Number 12(2017:Dec.)
• Publication Date: 2017-11-02
• Subjects: multi-layer piezoelectric actuator -- power amplifier -- dynamic model -- hysteresis; Smart materials -- Periodicals; Strucural design -- Periodicals; 620.11
• DOI: 10.1088/1361-665X/aa93c9
• Languages: English
• ISSNs: 0964-1726

Abstract

Abstract: The dynamic input–output characteristics of the multi-layer piezoelectric actuator (PA) are intrinsically rate-dependent and hysteresis. Meanwhile, aiming at the strong capacitive impedance of multi-layer PA, the power amplifier of the actuator can greatly affect the dynamic performances of the actuator. In this paper, a novel dynamic model that includes a model of the electric circuit providing voltage to the actuator, an inverse piezoelectric effect model describing the hysteresis and creep behavior of the actuator, and a mechanical model, in which the vibration characteristics of the multi-layer PA is described, is put forward. Validation experimental tests are conducted. Experimental results show that the proposed dynamic model can accurately predict the fully dynamic behavior of the multi-layer PA with different driving power.