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Experimental Study on Position Control System Using Encoderless Magnetic Motion
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 Title & Authors
Experimental Study on Position Control System Using Encoderless Magnetic Motion
Kim, Hong-youn; Yun, Young-Min; Shim, Ho-Keun; Kwon, Young-Mok; Heo, Hoon;
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 Abstract
A position control system composed of the PMLSM(Permanent Magnet Linear Synchronous Motor), unlike conventional linear permanent magnet synchronous motor is fixed to the permanent magnet moving coil rails (permanent magnet = stator, coil = mover), the coil is fixed, moving the permanent magnet, we propose a position control system (permanent magnet = mover, coil = stator) structure. Position is measured not using conventional encoder or resolver but by adopting vector control method using 2 hall sensors generating rectangular signal. This method estimate the velocity and position of mover by using the quadruple of two hall sensor signal instead of encoder signal. Vector control of PMLSM using 2 hall sensor generating rectangular wave is proved to control the system stable and efficiently through simulation. Also hardware experiment reveals that the position control performance is measured within the range of in the accuracy of , which is improved twice to the conventional method. The proposed method exhibits its economical efficiency and practical usefulness. The vector control technique using two hall sensors can be installed in narrow place, accordingly it can be implemented on the system where the conventional encoder or resolver cannot operate.
 Keywords
Linear Motor;PMLSM;Position Control;Encoderless;Magnetic Motion;
 Language
Korean
 Cited by
 References
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