Enhancement of hard disk drive manipulator using piezoelectric actuator mechanisms

Abstract

This paper discusses the employment of piezoelectric actuators (PEA) to encompass high precision-scale movement capability of magnetic hard disk drive servo systems. To overcome path/positioning limitations of previous hard disk servo systems, a new design consisting of three PEAs links is proposed. Two different controllers, namely PI and fuzzy, are designed and simulated to assess the performance of the proposed design over a couple of paths under the presence of noise and disturbance. Simulation results show that the proposed design is able to track complex paths over a wider spectrum of motion than conventional hard drive servo systems. This improves the read-write process by affording nanoscale motion and provides high levels of positioning accuracy, as well as wide spectrum of positioning capability. Moreover, both controllers reveal the ability to drive the mechanism with quick response and minimal overshoot, with the fuzzy controller outperforming the PI controller under the presence of noise and disturbance.

Analysis of Acoustic Signals of Footsteps from the Piezoelectric Sensor

“…In piezoelectric systems, the conversion between mechanical energy and electrical energy has many applications in industry (Smith, 2005). Nowadays, piezoelectric elements find numerous applications in precise positioning systems (Li, Zhang, Jia, & Qian, 2009;Liu, Yan, & Özbay, 2018;Qiu, Wang, Zhang, & Han, 2013;Salvador, Plazas, Gimeno, & Carreres, 2012;Stefanski, Minorowicz, Persson, Plummer, & Bowen, 2017;Tian et al, 2019;Wang, Ho, & Jiang, 2021), hard disc drive systems (Khasawneh, Jaradat, Naji, & Al-Azzeh, 2018;Lim & Choi, 2007;Ohashi, Kajiwara, Iwadare, & Arisaka, 2005), vibration control (Chuaqui, Roque, & Ribeiro, 2018;Høgsberg, 2021;Pu, Zhou, & Meng, 2019), energy harnessing (Chelli et al, 2021;Guigon, Chaillout, Jager, & Despesse, 2008;Jacquelin, Adhikari, & Friswell, 2011;Kundu & Nemade, 2016;Moro & Benasciutti, 2010;Peigney & Siegert, 2013;van den Ende, van de Wiel, Groen, & van der Zwaag, 2011;Wu, Bao, & Wang, 2021;Xiang, Wang, Shi, & Zhang, 2013;Yatim, Ismail, S.J, hj.bakri, & Effendy, 2018) etc. Due to the interaction between the foot and the contact surface during walking, human footsteps produce vibrations and sound from a few Hertz to ultrasonic frequencies(A. .…”

Modeling and identification of nonlinear hysteresis behavior of piezoelectric actuators using a computationally efficient phenomenological model and modified cuckoo search algorithm

“…Piezoelectric (PZT) actuators have been widely implemented for many years in applications of micropositioning systems such as hard disk drives [1,2], micromachining [3,4] and * Authors to whom any correspondence should be addressed. micromechanics in electronic assemblies [5,6] on account of nano-scale displacement accuracy, rapid response of frequency and high rigidity.…”

Design and analysis of porous flexure hinge based on dual-objective topology optimization of three-dimensional continuum

“…Compliant mechanisms [1] are the new type of mechanisms which use the elastic deformation of flexure members to achieve the expected function. Compared with traditional rigid hinges, the flexure hinges for compliant mechanisms are widely used in micro-electro-mechanical system (MEMS) [2-4], medical equipment [5], aerospace engineering [6,7], precision instruments [8,9] and some parallel manipulator [10][11][12][13] due to their substantial advantages: frictionless, zero backlash, lightweight and compact.…”