A laser light scanning device consisting of an electronically driven mechanically resonant torsional spring-mirror system was developed for display applications. The original design suffers fatigue failure due to the repeated rotation of the torsional spring. The torsional spring design is investigated and analyzed to attain the lowest possible stress level while maintaining a constant resonant frequency. The finite element analysis model of the torsional spring was created and the stress was minimized by changing the geometrical parameters of the spring. Spring geometric optimization resulted in a maximum stress of 0.632 GPa, that is 12% reduction in stress from the original design, which should give an extended life span of 1 month for the intended application.
Issue Section:
Technical Briefs
1.
Xiang
, S. H.
, Chen
, S. H.
, Wu
, X.
, Xiao
, D.
, and Zheng
, X. W.
, 2010, “Study on Fast Linear Scanning for a New Laser Scanner
,” Opt. Laser Technol.
0030-3992, 42
, pp. 42
–46
.2.
Hafez
, M.
, Sidler
, T. C.
, SalatheÂ
, R. P.
, Jansen
, G. L. M.
, and Compter
, J. C.
, 2000, “Design, Simulations and Experimental Investigations of a Compact Single Mirror Tip/Tilt Laser Scanner
,” Mechatronics
0957-4158, 10
, pp. 741
–760
.3.
Zhou
, Q. K.
, Ben-Tzvi
, P. H.
, Fan
, D. P.
, and Goldenberg
, A. A.
, 2008, “Design of Fast Steering Mirror Systems for Precision Laser Beams Steering
,” Robot Sensors Environment (ROSE), 2008 IEEE International Workshop Robot Sensors Environment
.4.
Cochran
, R. W.
, and Vassar
, R. H.
, 1990, “Fast Steering Mirrors in Optical Control Systems
,” Proc. SPIE
0277-786X, 1303
, pp. 24
–51
.5.
Zhou
, J. M.
, Yin
, H. Y.
, and Wang
, Y. H.
, 2009, “Research on Structure and Dynamic Characteristics of Fast-Steering
,” Proc. SPIE
0277-786X, 7281
, p. 72810J
.6.
Lim
, B. K.
, Koay
, L. K.
, and Gitano-Briggs
, H.
, 2010, “Design Optimization and Fatigue Testing of an Electronically-Driven Mechanically-Resonant Cantilever Spring Mechanism
,” Int. J. Mater. Des.
, 31
, pp. 4023
–4028
.7.
Aylward
, R. P.
, 2003, “Advanced Galvanometer-Based Optical Scanner Design
,” Sens. Rev.
0260-2288, 23
(3
), pp. 216
–222
.8.
Hii
, K. F.
, Vallance
, R. R.
, and Mengüc
, M. P.
, 2010, “Design, Operation, and Motion Characteristics of a Precise Piezoelectric Linear Motor
,” Precis. Eng.
0141-6359, 34
, pp. 231
–241
.9.
Mason
, W. P.
, 1981, “Piezoelectricity, Its History and Applications
,” J. Acoust. Soc. Am.
0001-4966, 70
(6
), pp. 1561
–1566
.10.
Remy
, M.
, Lemarquand
, G.
, Castagnede
, B.
, and Guyader
, G.
, 2008, “Ironless and Leakage Free Voice-Coil Motor Made of Bonded Magnets
,” IEEE Trans. Magn.
0018-9464, 44
(11
), pp. 4289
–4292
.11.
Jung
, K. S.
, and Baek
, Y. S.
, 2002, “Development of a Novel Maglev Positioner With Self-Stabilizing Property
,” Mechatronics
0957-4158, 12
, pp. 771
–790
.12.
Todd
, B.
, Jensen
, B. D.
, Schultz
, S. M.
, and Hawkins
, A. R.
, 2010, “Design and Testing of a Thin-Flexure Bistable Mechanism Suitable for Stamping From Metal Sheets
,” ASME J. Mech. Des.
0161-8458, 132
(7
), p. 071011
.13.
Wang
, N. F.
, and Tai
, K.
, 2010, “Design of 2-DOF Compliant Mechanisms to Form Grip-and-Move Manipulators for 2D Workspace
,” ASME J. Mech. Des.
0161-8458, 132
(3
), p. 031007
.14.
Urey
, H.
, 2002, “Torsional MEMS Scanner Design for High-Resolution Display Systems
,” Proc. SPIE
0277-786X, 4773
, pp. 27
–37
.15.
Greenwood
, V. J.
, Smith
, E. L.
, Goldsmith
, A. R.
, Cuthill
, I. C.
, Crisp
, L. H.
, and Walter-Swan
, M. B.
, 2004, “Does the Flicker Frequency of Fluorescent Lighting Affect the Welfare of Captive European Starlings?
,” Appl. Anim. Behav. Sci.
, 86
, pp. 145
–159
.16.
Becker
, C.
, and Elliott
, M. A.
, 2006, “Flicker-Induced Color and Form: Interdependencies and Relation to Stimulation Frequency and Phase
,” Conscious Cogn
1053-8100, 15
, pp. 175
–196
.17.
Asada
, N.
, Takeuchi
, M.
, Vaganov
, V.
, Belov
, N.
, Hout
, S. i.
, and Sluchak
, I.
, 2000, “Silicon Micro-Optical Scanner
,” Sens. Actuators, A
0924-4247, 83
, pp. 284
–290
.18.
George
, T. J.
, Seidt
, J.
, Shen
, M. -H. H.
, Nicholas
, T.
, and Cross
, C. J.
, 2004, “Development of a Novel Vibration-Based Fatigue Testing Methodology
,” Int. J. Fatigue
0142-1123, 26
, pp. 477
–486
.19.
Kotzalas
, M. N.
, 2001, “A Theoretical Study of Residual Stress Effects on Fatigue Life Prediction
,” Tribol. Trans.
1040-2004, 44
(4
), pp. 609
–614
.20.
Warren
, C. Y.
, and Richard
, G. B.
, 2002, Roark’s Formulas for Stress and Strain
, 7th ed., McGraw-Hill
, New York
.21.
Lobontiu
, N.
, Garcia
, E.
, and Canfield
, S.
, 2004, “Torsional Stiffness of Several Variable Rectangular Cross-Section Flexure Hinges for Macro-Scale and MEMS Applications
,” Smart Mater. Struct.
0964-1726, 13
, pp. 12
–19
.22.
Awtar
, S.
, and Sen
, S.
, 2010, “A Generalized Constraint Model for Two-Dimensional Beam Flexures: Nonlinear Load-Displacement Formulation
,” ASME J. Mech. Des.
0161-8458, 132
(8
), p. 081008
.23.
Farfan
, S.
, Rubio-Gonzalez
, C.
, Cervantes-Hernandez
, T.
, and Mesmacque
, G.
, 2004, “High Cycle Fatigue, Low Cycle Fatigue and Failure Modes of a Carburized Steel
,” Int. J. Fatigue
0142-1123, 26
, pp. 673
–678
.Copyright © 2011
by American Society of Mechanical Engineers
You do not currently have access to this content.
