Free Vibration Analysis for a Tactile Feedback Device of a Piezoelectric Ciliary Body Beam
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RESEARCH PAPER
Free Vibration Analysis for a Tactile Feedback Device of a Piezoelectric Ciliary Body Beam Jichun Xing1 · Dechun Liu1 Received: 17 May 2018 / Accepted: 26 September 2019 © Shiraz University 2019
Abstract A tactile feedback device of a piezoelectric ciliary body beam is presented. In order to investigate the relationship between the sizes of the ciliary body beam, the position of the piezoelectric ceramics plates and the frequency of the excitation signal, the electromechanical coupling dynamic model of the piezoelectric ciliary body beam is established. According to the boundary conditions and the continuous conditions, the natural frequencies and mode functions are solved. The results show that the ciliary body structure has little effect on the natural frequencies of the beam; the natural frequencies of the ciliary body beam are mainly affected by the length and width of the beam. According to the calculation results, brass is more suitable as a material for the beam. The coupling dynamic model and calculation results will provide a theoretical basis for forced vibration analysis of the beam and the establishment of the haptic device roughness model. Keywords Tactile feedback device · Piezoelectric ciliary body beam · Free vibration · Modal analysis
1 Introduction As the continuous development of human–computer interaction technology, tactile interaction, besides vision and hearing, has received growing attention as the third channel of information interaction (Patrick et al. 1991). Therefore, in the tactile feedback system, the design and development of tactile feedback actuators have grown in importance. At present, the tactile feedback actuators are classified into electromagnetic, piezoelectric, pneumatic and electrical stimuli according to the way of tactile stimulation. Among them, the tactile feedback device used the piezoelectric material as an actuator to realize tactile reappearance, which has the advantages of fast response, gentle vibration stimulation, stable vibration, long service life, low acoustic noise and low power consumption (Yamamoto et al. 2004; Chee et al. 1998; Konyo et al. 2005). Piezoelectric tactile feedback devices utilize the microvibration of piezoelectric actuators to change the friction of * Jichun Xing [email protected] Dechun Liu [email protected] 1
School of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China
touch surface and produce a tactile perception of different roughnesses, while a finger moves on the surface. Watanabe and Fukui (1995) presented a method for controlling tactile sensation on a surface by applying horn vibrators to excite ultrasonic vibration. Since then, more and more studies about tactile feedback devices have been carried out with piezoelectric actuators. Masashi et al. (2005) developed a tactile synthesis method for representing multi-frequency vibration of virtual touch and designed a wearable tactile device by using this method. The device used is an ion conductive polymer. The concept of th
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