A Novel Vibration Piezoelectric Generator Based on Flexible Piezoelectric Film Composed of PZT and PI Layer

Abstract

A novel piezoelectric generator based on soft piezoelectric film consisting of a polyimide (PI) sheet and lead zirconate titanate (PZT) is proposed to generate electric energy under the operating conditions of low-frequency and small-amplitude vibration. The theoretical model and working principle of the piezoelectric generator are discussed in detail. Using ANSYS software, a finite element analysis of the static and modal characteristics of the piezoelectric generator is carried out. Further, the output of the prepared piezoelectric generator is investigated by a home-made experimental platform. Results show that the transient excitation voltage of the generator increases with the increase in load resistance, and the continuous excitation voltage increases first and then remains almost stable. The maximum continuous power produced by the piezoelectric generator is about 4.82 mW. Furthermore, the continuous excitation voltage and power are in accordance with the simulation values when the load resistances are 20 kΩ and 25 kΩ, respectively.

Design and Experimental Evaluation of a Dual-Cantilever Piezoelectric Film Sensor with a Broadband Response and High Sensitivity

“…Transverse stress is created by the relative movement of the piezoelectric film cantilever beam's free and fixed ends. By combining Equations ( 3), (6), and ( 8), the stress distribution σ 2 on the PVDF piezoelectric film with the end load F can be expressed as:…”

“…Vibration signals are often measured and analyzed to extract information about systems, equipment, or structures. This information is utilized for applications such as fault detection [1], equipment performance optimization and preventative maintenance [2], human health monitoring [3], structural health monitoring [4,5], as well as vibration energy harvesting [6]. Due to the extremely weak, primarily low frequency and wide vibration frequency range of the generated vibration signals in earthquake exploration, water pipeline leakage, and bridge structure monitoring industries [7][8][9], vibration sensors with a high sensitivity and wide measurement bandwidth have increasingly significant application potential to ensure the accuracy and reliability of risk assessments and safety monitoring.…”

A Mechanoluminescent ZnS:Cu/PDMS and Biocompatible Piezoelectric Silk Fibroin/PDMS Hybrid Sensor for Self‐Powered Sensing and Artificial Intelligence Control

“…Several inorganic piezoelectric materials, such as PbZr x Ti (1−x) O 3 , [ 19 ] (1−x)Pb(Mg 1/3 Nb 2/3 )O 3−x PbTiO 3 , [ 20 ] and BaTiO 3 [ 21 ] are readily available and are potential candidates for integration with ML‐based sensors. However, despite their excellent output characteristics, these inorganic piezoelectric materials exhibit disadvantages, such as toxicity, brittleness, and lack of biocompatibility.…”

Simulation and Experiment of Active Vibration Control Based on Flexible Piezoelectric MFC Composed of PZT and PI Layer

“…The popular piezoelectric polymers can be divided into polyvinylidene fluoride (PVDF), polylactic acids (PLA), polyurethanes (PU) and PI [32][33][34][35]. Piezoelectric polymers have demonstrated better dielectric behavior and field strength, as well as an ability to tolerate high driving voltage [36,37]. It is because of the above characteristics that piezoelectric polymers can be used for the active vibration control of structures.…”