Volume 13, Issue 4 (2014)
MJEE 2014, 13(4): 93-98 |
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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,
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: (2223 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.
Received: 2016/08/23 | Accepted: 2014/01/21 | Published: 2016/08/23
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