Note: Arbitrary periodical mechanical vibrations can be realized in the resonant state based on multiple tuning fork structure

Abstract

We develop a novel approach to match harmonics and vibration modes based on the mechanism of multiple tuning fork structure (MTFS), through which it is promising to realize arbitrary periodical vibrations in the resonant state. A prototype three-layer MTFS with first three harmonics is presented to verify the feasibility of the proposed principle. The matching process and experimental results confirm the unique advantages of MTFS, as discussed in the theoretical analysis. Typical periodical motions, including sawtooth, square, half-wave rectified, and full-wave rectified waveforms, are achieved by the syntheses of resonant harmonics.

Resonant Type Piezoelectric Pump Driven at the Power Frequency Using a Tuning Fork Vibrator

“…Therefore, the anti-phase mode can maintain a high energy conversion efficiency. [14][15][16] The anti-phase mode of the TFV was utilized in our design.…”

Resonant-type inertia linear motor based on the harmonic vibration synthesis of piezoelectric bending actuator

“…Thus, the arbitrary periodical vibration in the resonant state can be produced by matching the harmonics and vibration modes. He et al [15] developed a novel multiple tuning fork structure, which could be used to produce arbitrary periodical mechanical vibration. Nishimura et al [16] also proposed a type of resonant smooth impact drive motor that uses a bolt-clamped Langevin transducer.…”

Design, simulation, and motion characteristics of a novel impact piezoelectric actuator using double stators

“…Many new piezoelectric motors have been introduced in recent years to address the low frequency of the quasi-static piezoelectric motor [19][20][21][22][23][24][25][26][27][28][29][30]. On the basis of Fourier analysis, these studies proposed that the non-sinusoidal vibration of the piezoelectric motor can be decomposed into multiple sine vibrations as fundamental waves and higher harmonics.…”

“…They used a highfrequency and high-amplitude sinusoidal signal drive to raise the operating frequency of the quasi-static motor to near the resonance point. Pan et al [22][23][24] designed a resonant piezoelectric actuator that synthesised non-sinusoidal mechanical vibration with sinusoidal vibration on the basis of the tuning fork structure, which significantly improves the speed of the quasi-static piezoelectric motor. Pan et al [25,26] proposed a novel resonant piezoelectric actuator on the basis of an inertial drive mechanism, which optimises the power drive capability of the piezoelectric actuator in the resonant mode.…”