An inertial piezoelectric actuator with miniaturized structure and improved load capacity

Abstract

An inertial actuator that improves load capacity within a miniaturized structure has drawn wide attention. This work proposes an inertial piezoelectric linear actuator and investigates a method that improves its load capacity. The structure and operational principle of the actuator are introduced. A dynamic model of the system is established that simulates the stepping characteristics. The dominant parameters affecting load capacity are discussed in detail. A prototype was manufactured and its main performance features tested. The experimental results confirm that the proposed actuator achieves a load capacity of 3.65 N, a resolution of 0.47 μm, and a speed of 6.15 mm s −1 , despite its compact size of Φ 9 mm×27 mm. The actuator has an improved load capacity given its smaller configuration than those reported in the literature. The model established provides a theoretical guide to the design of similar inertial actuators and may be used to predict and evaluate their load capacity.

Piezoelectric stick-slip actuators with flexure hinge mechanisms: A review

“…The excitation electrical signal for PSSAs: (a) the sawtooth waveform (Bansevicius and Blechertas, 2008; Chang and Li, 1999; Chu and Fan, 2006; Fan et al, 2019; Gao et al, 2019a, 2019b; Higuchi et al, 1990; Huang and Sun, 2019; Huang et al, 2011, 2012, 2016, 2020; Hunstig, 2017; Kurosawa and Ueha, 1991; Lee et al, 2007; Li et al, 2015a, 2017a, 2018b, 2019c, 2020c; Liu et al, 2012, 2019a; Lyding et al, 1988; Mashimo, 2014; Oubellil et al, 2019; Pan et al, 2016, 2019; Pohl, 1987a; Qin et al, 2019b; Salim et al, 2018; Shao et al, 2019a, 2019b; Smith et al, 1996; Song et al, 2018; Tang et al, 2020; Tomikawa et al, 1989; Wang and Lu, 2012; Wang et al, 2011, 2017c, 2019d, 2019e, 2019f; Wen et al, 2013; Xu et al, 2020; Yang et al, 2019, 2020b; Yu et al, 2020; Zesch et al, 1995; Zhang et al, 2019a), (b) the improvement of waveform shaping of stick phase (Hunstig et al, 2013a, 2013b; Wang and Lu, 2012; Zhang et al, 2018), (c) the improvement of waveform shaping of slip phase (Cheng et al, 2016, 2017b; Guo et al, 2019; Wang et al, 2016a), (d) the cycloid waveform (Bordoni et al, 1994; Chang and Li, 1999…”

“…Figure 2. The excitation electrical signal for PSSAs: (a) the sawtooth waveform(Bansevicius and Blechertas, 2008;Chang and Li, 1999;Chu and Fan, 2006;Fan et al, 2019;Gao et al, 2019aGao et al, , 2019bHiguchi et al, 1990;Huang and Sun, 2019;Huang et al, 2011Huang et al, , 2012Huang et al, , 2016Huang et al, , 2020Hunstig, 2017;Kurosawa and Ueha, 1991;Lee et al, 2007;Li et al, 2015aLi et al, , 2017aLi et al, , 2018bLi et al, , 2019cLi et al, , 2020cLiu et al, 2012Liu et al, , 2019aLyding et al, 1988;Mashimo, 2014;Oubellil et al, 2019;Pan et al, 2016Pan et al, , 2019Pohl, 1987a;Qin et al, 2019b;Salim et al, 2018;Shao et al, 2019aShao et al, , 2019bSmith et al, 1996;Song et al, 2018;Tang et al, 2020;Tomikawa et al, 1989;Wang and Lu, 2012;Wang et al, 2011Wang et al, , 2017cWang et al, , 2019dWen et al, 2013;Xu et al, 2020;…”

Glycerol‐regulated tough and electroresponsive alginate hydrogels for a muscle‐like biobased polymer actuator with highly sensitive and durable output force

“…[1][2][3][4][5][6] Because of the good biocompatibility, flexibility, high tensile performances and adjustable electrical conductivity, alginate hydrogels are regarded as ideal materials for constructing soft electric actuators. 7,8 Whereas, most hydrogels usually have low mechanical properties and poor self recovery, which greatly limits the long time stability of muscle-like biobased polymer actuators (MBPA). It has become an important goal of intelligent materials for actuated development and is of great significance to further eliminate obstacles between functional materials and structural materials.…”

A Novel Rotation-Structure Based Stick-Slip Piezoelectric Actuator with High Consistency in Forward and Reverse Motions

“…Using the inverse piezoelectric effect of piezoelectric materials, various piezoelectric actuators have been developed to meet the requirements of precision positioning. To achieve large-stroke movement, several stepping piezoelectric driving principles have been proposed, which can be classified by the working principles of inchworm actuators [6,7], stick-slip actuators [8,9], impact actuators [10,11], ultrasound actuators [12,13], and so on. Compared with other types of actuators, stick-slip piezoelectric actuators have the advantages of simple structure and convenient control; therefore, they have been widely investigated in recent years.…”