Initially Clamped Piezoelectric Inchworm Linear Motor Design Based on Force Amplification Mechanisms for Miniaturized and Large Force Actuation Applications

Abstract

In this paper, a novel monolithic structural design of a piezoelectric (PZT) inchworm motor utilizing three force amplification mode (FAM) mechanisms is presented as an approach to overcome the design challenges of common PZT inchworm motors. A mechanical system model based on Simulink software was developed for a proposed inchworm motor design. The dynamic response of the motor was simulated at the moment of releasing the pre-stressed mechanism. The results showed a backlash response due to the mass acceleration of the mechanisms.

Investigation of the Dynamics of a 2-DoF Actuation Unit Cell for a Cooperative Electrostatic Actuation System

“…Actuators 2021, 10, x FOR PEER REVIEW 3 of 24 in a novel concept of a cooperative electrostatic microactuator system that is intended for realizing large actuation displacements (tens of mm) and forces (tens of N) [16], which can meet the requirements of implantable actuators for bone distraction in osteogenesis applications, for example [17]. Therefore, the concept of the actuation system as a whole and the main cooperative operations and mechanisms therein will be briefly discussed.…”

“…The derivations were made by considering only bending forces within the linear elastic regime and the Euler-Bernoulli beam model [30] (pp. [14][15][16][17][18][19][20][21][22][23].…”

“…This paper presents the results of modeling an actuation unit cell (AUC), both analytically by a lumped-parameter model and numerically with FEM, and compares between the two approaches where possible. The AUC constitutes the basic building block in a novel concept of a cooperative electrostatic microactuator system that is intended for realizing large actuation displacements (tens of mm) and forces (tens of N) [16], which can meet the requirements of implantable actuators for bone distraction in osteogenesis applications, for example [17]. Therefore, the concept of the actuation system as a whole and the main cooperative operations and mechanisms therein will be briefly discussed.…”

Bond Graph Modeling and Simulation of Hybrid Piezo-Flexural-Hydraulic Actuator

“…These actuators provide several advantages in terms of faster response, high positioning accuracy, no backlash or static friction thus low wear and tear, and compact design. They require less actuation power and do not create any stray magnetic fields [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15].…”

Design and experimental evaluation of an inchworm motor driven by bender-type piezoelectric actuators

“…The pushed inchworm piezo motor can produce long travel with a high clamping force, but its mechanical housing problem leads to large dimensions, low precision and small driving force [21]. The crawling inchworm piezo motors, in contrast, have a compact dimension with a large clamping force, a long travel, and a nano-scale accuracy [22], which makes this type of piezo motor a promising candidate in applications of semiconductor chip detection.…”