A Novel Fuzzy Logic Based Sensorless Speed Control of Position Sensorless BLDC Servo Drive
R.Manikandan1, K.R.Priyadharsini2, R.Arulmozhiyal3

1R.Manikandan, Department of EEE, The Kavery Engineering College, Salem (Tamil Nadu), India.
2K.R. Priyadharsini, Department of EEE, The Kavery Engineering College, Salem (Tamil Nadu), India.
3Dr. R. Arulmozhiyal, Department of EEE, Sona College of Technology, Salem (Tamil Nadu), India.

Manuscript received on 20 January 2014 | Revised Manuscript received on 25 January 2014 | Manuscript published on 30 January 2014 | PP: 51-58 | Volume-2 Issue-6, January 2014 | Retrieval Number: F0923012614/2014©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: The development of advanced motor drive has been increases rapidly, because of their higher performance and reliability. The Sensorless control of permanent magnet brushless DC motor is presented in this paper. The fuzzy PI controller is developed for controlling the speed of the PMBLDC motor drive. Here the Sensorless control is obtained based on indirect back EMF detection which was justified by the observation that the position sensing is obtained indirectly from zero crossings of terminal voltages. Closed loop speed control is made with estimated speed from the stator voltage, so the drive proposed without any shaft mounted devices like position sensor and speed sensors. The performances of the proposed fuzzy logic controller based PMBLDC motor drive were investigated and the results are compared with conventional PI controller. Also the sensorless result scheme is compared with sensor control. In this Sensorless technique the cost of mechanical components such as sensors and cables are eliminated. The simulated results of conventional and fuzzy controller is compared and results illustrates that the FLC gives better dynamic performance also it is more robust for industrial speed control drive applications.
Keywords: Brushless DC motor, fuzzy logic controller, PI controller, MATLAB, Sensor and Sensorless control, Zero cross detection.

Scope of the Article: Fuzzy Logic