Positioning study in laser corrosion hemisphere platinum resistors
-
1.
Hypervelocity Aerodynamics Institute, China Aerodynamics Research and Development Center, Mianyang 621000, China;
-
2.
School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu 610054, China
-
Received Date:
2013-06-17
Accepted Date:
2013-09-02
-
Abstract
In order to make laser etching on the semicircle accurately, engrave the hemispherical platinum resistance of heat flux sensor and meet the precise positioning of the heat flow measurement points, the method of positioning processing point based on the vision imaging system was used. After theoretical analysis and experimental verification, the positioning data of high platinum resistance was gotten. Firstly, the edge contour was illuminated by the backlight and was visible clearly. Then, after extracting four coordinates on the edges, the hemisphere vertex was calculated. After rotating the platform and compensating the deviation value, the precise processing position was found. Finally, the resistance position of the heat hemispherical sensor was measured and verified. The experimental results show that the method has good positioning effect, the relative error of sphere radius by corrosion is about 0.39%, the relative error of rotation angle of loading platform is controlled in 3.9%. The problem of positioning hemisphere vertex is solved and the precision of laser corrosion is raised. This study is helpful to make platinum resistance on curve surface model by laser.
-
-
References
|
[1]
|
LU J, CHU J, HONANG W H,et al. Preparation of thick Pb(Zr,Ti)O3(PZT) film by electrostatic spray deposition(ESD) for application in micro-system technology[J].Applied Physics,2002,41(6):4317-4319. |
|
[2]
|
PAN K L, CHEN Z Ch, FU J Zh. Laser assisted microprocessing technology and its application in MEMS micro-manufacturing[J].Manufacturing Technology & Machine Tool,2002,10(3):5-7(in Chinese). |
|
[3]
|
WU B,WU Y F,KUAN Y. Direct laser writing of thin platinum film resistors[J].Laser Technology,2012,36(3):379-381(in Chinese). |
|
[4]
|
LI X G, CHEN J M, LIU F R. Study on direct writing thin film conductive line using pulse fiber laser[J]. Chinese Journal of Lasers, 2010, 37(12):3196-3200 (in Chinese). |
|
[5]
|
LIU J W, ZENG X Y. Status and prospect of laser direct writing[J].Laser Journal, 2001, 22(6): 15-18(in Chinese). |
|
[6]
|
SUN J F, TANG J H, GUO X G. The analysis of laser trimming resistance technical on the resistance value precision[J].Applied Laser,2004,24(3):139-141(in Chinese). |
|
[7]
|
YUE S, WU Y F, YE Y T, et al. The design ang realization of laser resistor trimming machine for preparative blueprint[J].China Science and Technology Information,2010(7):56-59(in Chinese). |
|
[8]
|
ZHANG F, ZENG X Y, LI X Y, et al. Laser etching and cutting printed circuit board by 355nm and 1064nm diode pumped solid state lasers[J].Chinese Journal of Lasers,2008,35(10):1637-1643(in Chinese). |
|
[9]
|
LIANG F C, HU J, XU Z J. Realization of electric control of laser direct writing mesh on concave spherical substrate[J].Optics and Precision Engineering,2006,14(5):792-796(in Chinese). |
|
[10]
|
WEI G J, SHAO J, ZHOU X H, et al. Laser direct writing system of fabricating binary optical elements[J]. Journal of Optoelectronics稬aser,2006,17(10):1213-1215(in Chinese).
|
|
[11]
|
WU B. Study of space curvilineer direct laser writing technology.Chengdu: University of Electronic Science and Technology of China, 2012:5 (in Chinese). |
|
[12]
|
MUNISAMY A. Progress of LED backlights for LCDs [J]. Journal of the Society for Information Display, 2008,16(2):287-310. |
-
-
Proportional views
-
Map
DownLoad: