Crack Detection Method on Flexure Hinges of 3-RRR Compliant Mechanism

DOI

10.2991/isrme-15.2015.313How to use a DOI?

Keywords

3-RRR Compliant Mechanism; Flexure hinge; PRBM; Crack detection.

Abstract

The planar 3-RRR compliant mechanism is a piezoelectric (PZT) actuator driven 3DOF parallel micro-motion device. It is widely used in micro-electromechanical systems, biotechnology engineering and aerospace. However, crack easily occurs on flexure hinge because alternate loading over a long period of time, which will compromise mechanism’s accuracy. This paper presents a method for crack detection based on the pseudo rigid body model (PRBM). Particularly, the location of cracked hinge can be identified from the obtained force’s variation on piezoelectric actuator of healthy and cracked configurations, while theirs elongation remaining the same. This research has good uses including fault diagnosis, facility for the real-time control and optimization of design of a compliant mechanism.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Junjie Gu
AU  - Changli Liu
AU  - Xuejun Wang
AU  - Shouzhu Hu
PY  - 2015/04
DA  - 2015/04
TI  - Crack Detection Method on Flexure Hinges of 3-RRR Compliant Mechanism
BT  - Proceedings of the 2015 International Conference on Intelligent Systems Research and Mechatronics Engineering
PB  - Atlantis Press
SP  - 1551
EP  - 1555
SN  - 1951-6851
UR  - https://doi.org/10.2991/isrme-15.2015.313
DO  - 10.2991/isrme-15.2015.313
ID  - Gu2015/04
ER  -