Piezoelectric power generation using friction-induced vibration

Abstract

In order to examine the feasibility of power generation by using friction-induced vibration with a piezoelectric element, we performed experiments and numerical analysis. In the experiments, the generated power in the piezoelectric element and the displacement of an oscillator were measured by a newly developed apparatus that embodied a single-degree-of-freedom (1-DOF) system with friction. In the numerical analysis, an analytical model of a 1-DOF system with friction and piezoelectric element was proposed to simulate the experiments. The experimental results demonstrated that the power of a few microwatts was generated by sliding between a steel ball and a steel plate lubricated with glycerol. In this study, a maximum power of approximately 10 μW was generated at a driving velocity of 40 mm s−1 and a normal load of 15 N. The numerical results demonstrated good qualitative agreement with the experimental results. This implies that this analytical model can be applied to optimize the oscillator design in piezoelectric power generation using friction-induced vibration.

Investigation of Piezoelectric Energy Harvesting via Nonlinear Friction-Induced Vibration

“…A friction system with two DOFs is employed to study the PEH via FIV; this system is extended from the work of Tadokoro et al [53]. In their work, a ball sample rubs against a sliding flat sample and stick-slip motion occurs; then a piezoelectric film is attached with the fixture of the test setup and successfully transfers the FIV energy to electric energy.…”

“…e parameters set in this analysis are from the work performed by Tadokoro et al [53], which are listed in Table 1. Figure 3 depicts the variation of real and imaginary parts of the eigenvalues with the increase of friction coefficients.…”

“…ese force fluctuations could accordingly excite different energy harvesting systems and generate fluctuating electric signals. Tadokoro et al [53] and Masuda and Sawai [54] experimentally verified the feasibility of PEH via stick-slip motion; moreover, Tadokoro et al [53] also established a one-degreeof-freedom (DOF) mathematical model to simulate the PEH by means of stick-slip motion. On the other hand, to study the energy harvesting related to the model coupling instability, Wang et al [8] experimentally and numerically studied the mode-coupling instability between a pad and disc and verified the feasibility of energy harvesting from high-amplitude FIV.…”

Simultaneous energy harvesting and tribological property improvement

“…Therefore, a new and alternative approach was proposed by various studies to solve this problem, which involves harvesting the vibration energy of friction-induced vibration (FIV). FIV does not rely on the external excitation of the environment vibration source [21][22][23]. Considering that FIV may cause the generation of unwanted noise (known as frictioninduced vibration and noise (FIVN)), which is often detrimental to people's health and affects operations of machines and functions of structures, a large number of studies on FIV have found potential approaches to reduce it [24][25][26][27][28][29][30].…”

“…Tsujiura et al [36] built a self-excited piezoelectric film twin-chip airflow energy harvester and found that a thinner cantilever reduced the maximum output voltage. Tadokoro et al [37] established an analytical model of a 1-degree-offreedom system with friction and piezoelectric elements, which can be applied to the optimization design of a friction-excited piezoelectric generator oscillator. Several investigations have also verified the feasibility of PEH via stick-slip friction motion using different test setups [38][39][40].…”