High positioning accuracy of a dual-axis feeding system enhanced by using error compensation methods for UV laser processing system

2011 ◽  
Author(s):  
Wen-Tse Hsiao ◽  
Shih-Feng Tseng ◽  
Donyau Chiang ◽  
Kuo-Cheng Huang ◽  
Ming-Fei Chen
Keyword(s):  
Error Compensation ◽  
Laser Processing ◽  
Processing System ◽  
Feeding System ◽  
Uv Laser ◽  
Positioning Accuracy ◽  
Compensation Methods

Novel adaptive laser processing system for flying optics

2003 ◽  
Author(s):  
Quanzhong Zhao ◽  
Zhaogu Cheng ◽  
Haijun Gao ◽  
Huijie Huang
Keyword(s):  
Laser Processing ◽  
Processing System ◽  
Adaptive Laser

scholarly journals Pulsed UV Laser Processing of Carbosilane and Silazane Polymers

Materials ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 372 ◽  
Author(s):  
Samuel Ligon ◽  
Gurdial Blugan ◽  
Jakob Kuebler
Keyword(s):  
Laser Beam ◽  
Laser Processing ◽  
Scanning Speed ◽  
Inert Atmosphere ◽  
Laser Wavelength ◽  
Uv Laser ◽  
Glass Substrates ◽  
Polymer Precursors ◽  
Laser Systems ◽  
Pre Treatment

Freestanding SiCNO ceramic pieces with sub-mm features were produced by laser crosslinking of carbosilane and silazane polymer precursors followed by pyrolysis in inert atmosphere. Three different pulsed UV laser systems were investigated, and the influence of laser wavelength, operating power and scanning speed were all found to be important. Different photoinitiators were tested for the two lasers operating at 355 nm, while for the 266 nm laser, crosslinking occurred also without photoinitiator. Pre-treatment of glass substrates with fluorinated silanes was found to ease the release of green bodies during solvent development. Polymer crosslinking was observed with all three of the laser systems, as were bubbles, surface charring and in some cases ablation. By focusing the laser beam several millimeters above the surface of the resin, selective polymer crosslinking was observed exclusively.

scholarly journals A Non-Delay Error Compensation Method for Dual-Driving Gantry-Type Machine Tool

Processes ◽  
2020 ◽  
Vol 8 (7) ◽  
pp. 748
Author(s):  
Qi Liu ◽  
Hong Lu ◽  
Xinbao Zhang ◽  
Yu Qiao ◽  
Qian Cheng ◽  
...  
Keyword(s):  
Machine Tool ◽  
Error Compensation ◽  
Prediction Method ◽  
Compensation Method ◽  
Industrial Robots ◽  
Numerical Control ◽  
Heavy Duty ◽  
Positioning Errors ◽  
Compensation Methods ◽  
Type Machine

The drive at the center of gravity (DCG) principle has been adopted in computer numerical control (CNC) machines and industrial robots that require heavy-duty and quick feeds. Using this principle requires accurate corrections of positioning errors. Conventional error compensation methods may cause vibrations and unstable control performances due to the delay between compensation and motor motion. This paper proposes a new method to reduce the positioning errors of the dual-driving gantry-type machine tool (DDGTMT), namely, a typical DCG-principle-based machine tool. An error prediction method is proposed to characterize errors online. An algorithm is proposed to quickly and accurately compensate the errors of the DDGTMT. Experiment results verify that the non-delay error compensation method proposed in this paper can effectively improve the accuracy of the DDGTMT.

Laser processing system for microdrilling of printed circuit boards

2000 ◽  
Author(s):  
Junichi Nishimae ◽  
Yukio Satoh ◽  
Tetsuo Kojima ◽  
Tsukasa Fukushima
Keyword(s):  
Laser Processing ◽  
Printed Circuit Boards ◽  
Processing System ◽  
Circuit Boards ◽  
Printed Circuit

Development of Semiconductor Direct Output Laser Processing System and Research of Temperature Control Strategy

Applied laser ◽  
2015 ◽  
Vol 35 (1) ◽  
pp. 115-123
Author(s):  
徐元飞 Xu Yuanfei ◽  
胡晓冬 Hu Xiaodong ◽  
姚建华 Yao Jianhua ◽  
Volodymyr Kovalenko Volodymyr Kovalenko
Keyword(s):  
Temperature Control ◽  
Control Strategy ◽  
Laser Processing ◽  
Processing System ◽  
Output Laser

The Error Analysis and Compensation of Two-Dimensional Precision Positioning Platform

2012 ◽  
Vol 268-270 ◽  
pp. 1380-1384
Author(s):  
Mu Cheng Zhu ◽  
Xian Peng Luo ◽  
Ya Ping Wang
Keyword(s):  
Error Compensation ◽  
Compensation Effect ◽  
Closed Loop ◽  
Two Dimensional ◽  
Location Error ◽  
Precision Positioning ◽  
Positioning Accuracy ◽  
Loop Control ◽  
Dimensional Precision ◽  
Motion Control Card

Through measuring and analyzing the location error of two-dimensional precision positioning system based on the motion control card, and according to the deficiency of the first error compensation, a strategy that enhance addition based on first error compensation was put forward. That using closed loop control to compensate and correct the location error makes the positioning accuracy improved obviously, and achieves an ideal compensation effect. Under the loading conditions, X axial positioning accuracy reached 11μm, Y axial positioning accuracy reached 10μm.

Error Analysis of a Novel Resolver-to-Digital Converter

2012 ◽  
Vol 542-543 ◽  
pp. 695-698
Author(s):  
Wen Jing He ◽  
Xiao Wen Xu ◽  
Zhong Ke Shi
Keyword(s):  
Error Analysis ◽  
Error Compensation ◽  
Digital Converter ◽  
Compensation Methods ◽  
Signal Characteristics ◽  
Accuracy And Stability

In this paper, a software-based resolver-to-digital converter using tangent algorithm is proposed. Meanwhile, three main non-ideal signal characteristics which cause the error of the presented resolver-to-digital converter are individually discussed, and the error compensation methods are given. The results show that the proposed strategies effectively improve the accuracy and stability of the system.

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