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A Novel Robust Speed Sensor-Less Control of DC Motor

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Until now, Physical sensors have been used for estimating the speed of the DC motor for precise speed control. These Physical sensors not only increase the cost but also contribute to the failure of the overall control system. This paper proposes a novel observer for estimating the rotor speed of the DC motor based on the assumption that the speed will not vary during a short sampling period. Speed estimation is carried out by using the armature current and the supply voltage. Initially, a half order observer has been proposed where the speed is the only estimation variable. It has been found out that the half order observer has maintained an accurate speed estimation until a load disturbance has been introduced. In order to overcome this problem, a robust full order observer is proposed where both the speed and current are estimated. The proposed full order observer shows an accurate estimation during both speed step change and load variation. The closed loop operation of the speed sensor-less DC motor is verified through extensive simulation.
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Robust Speed Observer; DC Motor; ITAE; Half Order Observer; Full Order Observer

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H. M. Guzey, A. Dumlu, N. Guzey, and A. Alpay, Optimal synchronizing speed control of multiple DC motors, in 2018 4th International Conference on Optimization and Applications (ICOA), 2018, pp. 1-5.

Z. Has, A. H. Muslim, and N. A. Mardiyah, Adaptive-fuzzy-PID controller based disturbance observer for DC motor speed control, in 2017 4th International Conference on Electrical Engineering, Computer Science and Informatics (EECSI), 2017, pp. 1-6.

T. R. Dil Kumar and S. J. Mija, Design and performance evaluation of robust SMC schemes for speed control of DC motor, in 2014 IEEE International Conference on Advanced Communications, Control and Computing Technologies, 2014, pp. 88-92.

H. Guoshing and L. Shuocheng, PC-based PID speed control in DC motor, in 2008 International Conference on Audio, Language and Image Processing, 2008, pp. 400-407.

B. Terzic and M. Jadric, Design and implementation of the extended Kalman filter for the speed and rotor position estimation of brushless DC motor, IEEE Transactions on Industrial Electronics, vol. 48, pp. 1065-1073, 2001.

S. Geraee, M. Shafiei, A. R. Sahami, and S. Alavi, Position sensorless and adaptive speed design for controlling brushless DC motor drives, in 2017 North American Power Symposium (NAPS), 2017, pp. 1-6.

J. Pongfai and W. Assawinchaichote, Self-tuning PID parameters using NN-GA for brush DC motor control system, in 2017 14th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2017, pp. 111-114.

E. Guerrero, J. Linares, E. Guzman, H. Sira, G. Guerrero, and A. Martinez, DC Motor Speed Control through Parallel DC/DC Buck Converters, IEEE Latin America Transactions, vol. 15, pp. 819-826, 2017.

T. L. Kottas, A. D. Karlis, and Y. S. Boutalis, A Novel Control Algorithm for DC Motors Supplied by PVs Using Fuzzy Cognitive Networks, IEEE Access, vol. 6, pp. 24866-24876, 2018.

C. R. Lee, S. Kim, and C. K. Ahn, Auto-Tuning Proportional-Type Synchronization Algorithm for DC Motor Speed Control Applications, IEEE Transactions on Circuits and Systems II: Express Briefs, pp. 1-1, 2019.

E. Afjei, A. N. Ghomsheh, and A. Karami, Sensorless speed/position control of brushed DC motor, in 2007 International Aegean Conference on Electrical Machines and Power Electronics, 2007, pp. 730-732.

G. Scelba, G. D. Donato, M. Pulvirenti, F. G. Capponi, and G. Scarcella, "Hall-Effect Sensor Fault Detection, Identification, and Compensation in Brushless DC Drives," IEEE Transactions on Industry Applications, vol. 52, pp. 1542-1554, 2016.

Q. Zhang and M. Feng, Fast Fault Diagnosis Method for Hall Sensors in Brushless DC Motor Drives, IEEE Transactions on Power Electronics, vol. 34, pp. 2585-2596, 2019.

S. Chen, G. Liu, and L. Zhu, Sensorless Startup Strategy for a 315-kW High-Speed Brushless DC Motor With Small Inductance and Nonideal Back EMF, IEEE Transactions on Industrial Electronics, vol. 66, pp. 1703-1714, 2019.

E. Vazquez-Sanchez, J. Gomez-Gil, J. C. Gamazo-Real, and J. F. Diez-Higuera, A New Method for Sensorless Estimation of the Speed and Position in Brushed DC Motors Using Support Vector Machines, IEEE Transactions on Industrial Electronics, vol. 59, pp. 1397-1408, 2012.

M. Hilairet and F. Auger, Speed sensorless control of a DC-motor via adaptive filters, IET Electric Power Applications, vol. 1, pp. 601-610, 2007.

W. Ra, H. Lee, J. B. Park, and T. Yoon, Practical Pinch Detection Algorithm for Smart Automotive Power Window Control Systems, IEEE Transactions on Industrial Electronics, vol. 55, pp. 1376-1384, 2008.

E. Kessler and W. Schulter, Method for establishing the rotational speed of mechanically commutated dc motors, ed: Google Patents, 2000.

M. Micke, H. Sievert, J. Hachtel, and G. Hertlein, Method and device for measuring the rotational speed of a pulse-activated electric motor based on a frequency of current ripples, ed: Google Patents, 2007.

E. Vazquez-Sanchez, J. Gomez-Gil, and M. Rodriguez-Alvarez, Analysis of three methods for sensorless speed detection in DC motors, in 2009 International Conference on Power Engineering, Energy and Electrical Drives, 2009, pp. 117-122.

D. D. Moller, P. K. Schneider, and S. A. Canales, Voltage-sensitive oscillator frequency for rotor position detection scheme, ed: Google Patents, 2008.

Y. Shao, R. Yang, J. Guo, and Y. Fu, Sliding mode speed control for brushless DC motor based on sliding mode torque observer, in 2015 IEEE International Conference on Information and Automation, 2015, pp. 2466-2470.

T. M. Rao, M. Ghosh, and B. Halder, Effect of pole placement of a full order state observer in sensorless speed estimation of brushed DC motor, in 2016 IEEE 7th Power India International Conference (PIICON), 2016, pp. 1-6.

P. Chevrel and S. Siala, Robust DC-motor speed control without any mechanical sensor, in Proceedings of the 1997 IEEE International Conference on Control Applications, 1997, pp. 244-246.

S. Yachiangkam, C. Prapanavarat, U. Yungyuen, and S. Po-ngam, Speed-sensorless separately excited DC motor drive with an adaptive observer, in IEEE Region 10 Conference TENCON 2004., 2004, pp. 163-166 Vol. 4.

G. Liu, C. Cui, K. Wang, B. Han, and S. Zheng, Sensorless Control for High-Speed Brushless DC Motor Based on the Line-to-Line Back EMF, IEEE Transactions on Power Electronics, vol. 31, pp. 4669-4683, 2016.

Indriawati, K., Agustinah, T., Jazidie, A., Real Time Implementation of Robust Observer Based Sensor and Actuator Fault Tolerant Tracking Control for a DC Motor System, (2018) International Review of Automatic Control (IREACO), 11 (5), pp. 255-263.

Tumbuan, T., Nurprasetio, I., Indrawanto, I., Abidin, Z., Stable PID Control Strategy to Remove Limit Cycle Due to Stribeck Friction on DC Servo Motor, (2018) International Review of Automatic Control (IREACO), 11 (4), pp. 208-216.


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