A Novel Stick‐Slip Type Rotary Piezoelectric Actuator

Abstract

A novel stick-slip rotary piezoelectric actuator is designed for optical use. The actuator is proposed, fabricated, and tested with the aim of realizing both fine resolution and a long stroke. The dynamic model of the actuator is established, and simulations are performed to discover how the input driving voltage affects the stick-slip motion of the actuator. An experimental system is built to evaluate the performance of the actuator at different frequencies, voltages, and numbers of driving piezoelectric stacks. Experimental results show that the minimal output stepping angle is 3.5 μrad (0.2 millidegrees) under a sawtooth waveform having a voltage of 13 V and frequency of 3000 Hz and that the velocity reaches 0.44 rad/s (25°/s) under a sawtooth waveform having a voltage of 93 V and frequency of 3000 Hz, while the stroke is infinite. The proposed actuator provides stable and accurate rotary motion and realizes a high velocity.

A Review of Modeling and Control of Piezoelectric Stick-Slip Actuators

“…Wang et al developed a kinetic friction model of the actuator and investigated the effect of the input drive voltage on the viscous slip motion of the actuator through simulation [32]. Nguyen et al used the method of dimensionality reduction to describe the frictional contact behavior of the stick-slip microactuator.…”

Piezoelectric Actuators

“…As is known to all, under an external electric field, piezoelectric materials can generate deformations because of the rotation of the internal electric domain. When it comes to piezoelectric materials, piezoelectric effects are the most special functional characteristics including the direct piezoelectric effect and the converse piezoelectric effect [31][32][33][34]. When the mechanical stress is applied to the piezoelectric materials, electric charges can be produced on the electrodes of the piezoelectric materials, which is called the direct piezoelectric effect.…”

“…It has been shown that the subswitching response of a number of ferroelectric materials well obey the RL. Examples include donor-doped soft Pb(Zr,Ti)O 3 (PZT) ceramics [5,27,28,30], coarse-grained undoped BaTiO 3 [31], high-Curie-temperature piezoceramics based on BiScO 3 -PbTiO 3 [24], textured (K 0.5 Na 0.5 )NbO 3 (KNN) ceramics [32], Aurivilius-type Nb-doped Bi 4 Ti 3 O 12 [31], some relaxor-ferroelectric Pb (Mg 1/3 Nb 2/3 )O 3 -PbTiO 3 compositions [33,34] and Pb-based thin films [35,36]. It has to be pointed out, however, that even in these cases, strictly speaking, a good match between the Rayleigh model and the measured subswitching response is typically observed in a limited driving field range, sometimes referred to as the "Rayleigh range" [5,27].…”

“…However, topology optimization of piezoelectric actuators is a complicated problem, which contains the process of determining the connectivity, shape, and location of voids inside a given design domain. Traditional researches have given some topological structure for the design of piezoelectric actuators [27][28][29][30][31][32][33][34], the not solved problem is that which kind of compliant mechanisms with the flexure hinges makes the output performances best. Yang et al [35] developed a static topology optimization method to solve the problem, and some topology optimization methods have also been extended to design the compliant mechanism of piezoelectric actuators [36][37][38][39][40].…”

Research on variable stiffness asymmetrical resonant linear piezoelectric actuator based on multi-modal drive

“…Piezoelectric motors have a variety of structures, but the mainstream of the academic circle divides them into inchworm piezoelectric motors [10][11][12], ultrasonic piezoelectric motors [13,14], and inertial impact piezoelectric motors [15][16][17][18][19]. The inertia impact piezoelectric motor uses the inertia impact of the stator vibration to generate micro displacement to realize the linear motion or rotation of the mover [20,21].…”