Title :
Pulsating torque modeling and compensation for high precision positioning control
Author :
Abd-Elhameed, Esam H. ; Iwasaki, Makoto
Author_Institution :
Dept. of Comput. Sci. & Eng., Nagoya Inst. of Technol., Nagoya
Abstract :
AC machines with PM (permanent magnet) are used with preference for applications in high performance positioning systems. The actuated servo drive of ball-screw-driven system which has been used in many industrial applications for fast and precise positioning in the microscopic displacement range is an AC PM motor. This servo drive generates parasitic pulsating torque caused by the power supply and the machine construction resulting speed oscillations which, although small in magnitude, affect the performance of the mechanism. Pulsating torque effects are analyzed and modeled using a mathematical approach and then used for compensation. The experimental results after pulsating torque compensation demonstrate the effectiveness of pulsating torque compensation to accomplish high precision positioning performance of the ball-screw-driven system in the microscopic displacement range.
Keywords :
AC motors; machine control; permanent magnet motors; position control; AC PM motor; AC machines; actuated servo drive; ball-screw-driven system; high precision positioning control; microscopic displacement range; permanent magnet machines; pulsating torque modeling; AC machines; AC motors; Construction industry; Drives; Electrical equipment industry; Electricity supply industry; Microscopy; Permanent magnets; Servomechanisms; Torque control; Cogging effect; micro-scopic displacement; permanent magnet machine; pulsating torque;
Conference_Titel :
Mechatronics, 2009. ICM 2009. IEEE International Conference on
Conference_Location :
Malaga
Print_ISBN :
978-1-4244-4194-5
Electronic_ISBN :
978-1-4244-4195-2
DOI :
10.1109/ICMECH.2009.4957142
