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Sensorless DC motor drive via optimal observer‐based servo control
Author(s) -
Leephakpreeda Thananchai
Publication year - 2002
Publication title -
optimal control applications and methods
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.458
H-Index - 44
eISSN - 1099-1514
pISSN - 0143-2087
DOI - 10.1002/oca.714
Subject(s) - control theory (sociology) , observer (physics) , dc motor , state observer , computer science , control engineering , rotor (electric) , servomechanism , servo drive , servomotor , servo control , electronic speed control , separation principle , servo , control (management) , engineering , nonlinear system , physics , artificial intelligence , mechanical engineering , quantum mechanics , electrical engineering
This paper proposes an alternative design of a sensorless DC motor drive via optimal observer‐based servo control. Without the speed sensor, the extended Luenberger observer is implemented to estimate the rotor speed of the DC motor in the presence of the disturbance torque. With this knowledge of the speed estimated from the observer, the servo state‐feedback controller can drive such a rotor speed to follow the desired one. The stability and performance of the DC drive system can be guaranteed by the optimal control which minimizes the H 2 norm of the closed‐loop feedback control and observer system. The simulation and experiment studies are demonstrated for the effectiveness of the proposed control methodology in a practical approach for the sensorless DC drive. Copyright © 2002 John Wiley & Sons, Ltd.