A novel low-voltage non-resonant piezoelectric linear actuator based on two alternative principles. (7th December 2016)

• Record Type: Journal Article
• Authors: Chu, Xiangcheng; Zhong, Zuojin; Zhu, Cong; Zhao, Yanqiang; Li, Longtu
• Is Part Of: Ferroelectrics. Volume 505(2016)
• Page Start: 147
• Page End: 158
• Publication Date: 2016-12-07
• Subjects: Piezoelectric linear actuator -- low voltage -- stick-slip -- friction-difference; Ferroelectricity -- Periodicals; Ferroelectric crystals -- Periodicals; 537
• DOI: 10.1080/00150193.2016.1255547
• Languages: English
• ISSNs: 0015-0193

Abstract

ABSTRACT: A piezoelectric actuator working on two alternative principles: stick-slip and friction-difference, is proposed, which can work in the step mode and smooth mode respectively. The actuator is mainly comprised of two stacks and a transmission unit. In the step mode, the fine step, thrust is 0.25 μm, 0.7 N respectively at 50 Vpp. The minimum step is 60 nm at 15 Vpp. In the smooth mode, the maximum output velocity is 34 mm/s at 3.7 kHz and 50 Vpp, which can realize rapid positioning. Low voltage simplifies the circuits enormously. Non-resonant frequency make the control system easy to be implemented.