Resonant-type piezoelectric inertial linear motor based on the optimization of a dual stage tuning fork transducer

Abstract

A dual stage tuning fork transducer (DSTFT) is designed as a stator for a resonant-type inertial linear motor. The first- and second-layer resonant frequencies of DSTFT are automatically adjusted with a ratio of 1:2 by using an ANSYS optimization design algorithm, and a resonant-type sawtooth-shaped mechanical waveform is generated by composing the two resonant vibrations of DSTFT. An inertial linear motor prototype is fabricated and tested. Experimental results confirmed the effectiveness of the designed transducer. The no-load maximum speed is 21.5 mm/s with a driving voltage of 67.2 V at a base frequency of 2831 Hz. The linear speed is 10.5 mm/s, and the drag load is 0.02 N at a preload force of 1 N and a driving voltage of 114 V for the base frequency. The movement direction could be reversed by changing the driving voltage phase.

Resonant-type inertial impact linear piezoelectric motor based on coupling of driving and clamping parts

“…Compared with the non-resonant inertial impact piezoelectric motor (motor of Chen et al [19]), the motor prototype in this study has the advantages of relatively simple structure, high output speed and large load capacity. Compared with resonant inertial impact piezoelectric motors (motor of Pan et al [20] and motor of Zhang et al [21]), motor of Pan et al [20] has large driving frequency, fast output speed and small output load. Since bidirectional motion can only be realized by the structure of double stators, the structure of the motor of Pan et al is also defined as complex.…”

Development of a high-resolution, high-speed impact piezoelectric actuator using cross-frequency band method

“…Therefore, a proper slider mass is important to the speed of the slider. [10] Quasi-static 800 0.147 -0.24 Zhou et al [8] Quasi-static 510 3.27 0.29 -Li et al [13] Quasi-static 5000 6.057 0.17 3.5 Qin et al [9] Quasi-static 220 2.34 0.89 3.8 Pan et al [34] Resonant 587 and 1174 28.2 -1 Pan et al [32] Resonant 2827 21.5 -0.12 He et al [28] Resonant The design and research of a novel cross-scale impact piezoelectric actuator are considerably important for the precision and the efficiency of processing instruments. The piezoelectric actuator is mainly composed of four diamond-shaped frames connected in parallel, which can consider a certain stiffness and flexibility.…”

“…Mazeika et al [31] developed a new small linear type piezoelectric inertia-friction actuator. The speed was 40.38 mm s −1 , and the maximum load was 0.21 N. Pan et al [32][33][34] also studied resonant piezoelectric motors based on synthetic mechanical square wave and synthetic mechanical sawtooth wave, which greatly improved the output speed of impact piezoelectric motors. However, piezoelectric motors have difficulty balancing high speed and high resolution output under the excitation of a single frequency band at quasi-static or resonant states.…”

Construction, modeling and experiment of a resonant-type piezoelectric impact motor based on inertial drive mechanism

“…Combining two sinusoidal vibrations with high frequencies and amplitudes, resonant saw-tooth wave vibration of the stator leaded to a dramatic improvement of the power driving capability [34]. Many other prototype motors were also developed with ingenious structure designs, such as piezoelectric stack rod [35], piezoelectric cantilever beam [36], piezoelectric bending plates [37], and tuning fork transducer [38]. However, design processes of these prototypes are all completed with the help of finite element analysis.…”