Browse > Article

Optimization of a Piezoelectric Actuator using Bridge-Type Hinge Mechanism  

김준형 (KAIST 기계공학과 MSD 실험실)
김수현 (KAIST 기계공학과)
곽윤근 (KAIST 기계공학과)
Publication Information
Journal of the Korean Society for Precision Engineering / v.20, no.2, 2003 , pp. 168-175 More about this Journal
Abstract
In this research, a bridge-type flexure hinge mechanism is developed and optimized to amplify the displacement of a multilayer piezostack. Developed hinge mechanism has three-dimensional structure to reduce link size, so it have high amplification ratio with respect to small size. A flexure hinge is assumed to be 6 degree-of-freedom spring elements and matrix methods are used to model a hinge mechanism. To verify derived matrix model, a displacement and frequency experiments are performed. The analysis result shows that the displacemental error between matrix model and experiments is below 10 percents and the deformation of hinge in parasitic direction should be considered In hinge modeling. Using developed matrix model, an optimal design is performed to maximize the performance of hinge mechanism.
Keywords
Flexure hinge; Bridge-type; Piezoelectric actuator; Matrix methods; Optimization;
Citations & Related Records
연도 인용수 순위
  • Reference
1 J. M. Paros and L. Weisbord, 'How to design flexure hinges,' Machine Design, Vol. 27, pp. 151-156, 1965
2 E. Furukawa and M. Mizuno, 'Displacement Amplification and Reduction by Means of Linkage,' Int. J. Japan Soc. of Prec. Eng. Vol. 24, No. 4, pp. 285-290, 1990
3 W. Xu and T. King, 'Flexure hinges for piezoactuator displacement amplifiers: flexibility, accuracy, and stress considerations,' Precision Engineering,' Vol. 19, No. 1, pp. 4-10, 1996   DOI   ScienceOn
4 J. W. Ryu, '6-Axis Ultraprecision Positioning Mechanism Design and Positioning Control,' Ph. D. thesis, KA1ST, 1997
5 김상채, 김수현, 곽윤근, '탄성힌지를 이용한 레버구조의 모형화,' 한국정밀공학회 춘계학술대회 논문집 , pp. 244-248, 1999