Volume 13, Issue 4 (2014)                   MJEE 2014, 13(4): 93-98 | Back to browse issues page

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Bagheri M, Olyaee S, Leitgeb E. Analysis the Performance of Controllers for He-Ne Laser Stabilization by Combination of Frequency Locking and Power Balanced Methods for Nano-Metrology Applications. MJEE. 13 (4) :93-98
URL: http://mjee.modares.ac.ir/article-17-5811-en.html
1- MSc Student, Faculty of Electrical Engineering, Shahid Rajaee Teacher Training University, Tehran, Iran, nbm.
2- Associate Professor, Nano-photonics and Optoelectronics Research Laboratory (NORLab), Shahid Rajaee Teacher Training University, Tehran, Iran,.
3- Professor, Graz University of Technology, Institute of Microwave and Photonic Engineering, Graz, Austria,
Abstract:   (1601 Views)
In this paper, analysis the performance of PI, PI-like fuzzy, and parallel fuzzy P+ fuzzy I controllers for He-Ne lasers frequency stabilization by combination of frequency locking and power balanced methods is presented. He-Ne lasers can be attributed to an unstable system due to the influence of environmental factors on its' frequency. Therefore, the stabilization of He-Ne laser is so important in sensitive applications such as laser interferometers and nanometrology systems. The simulation results of controllers by powerful software MATLAB/SIMULINK-GUI show that parallel fuzzy P+ fuzzy I controller has better stabilization performance and integrated absolute error (IAE) than others. Also, frequency fluctuations of He-Ne laser is about 2×10-11 by parallel fuzzy P+ fuzzy I controller.    
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Received: 2016/08/23 | Accepted: 2014/01/21 | Published: 2016/08/23

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