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Abstract
A PC based motion control system employing permanent magnet direct current (PMDC) servomotors is described. The system provides two axes of coordinated motion in a plane with programmable velocity and acceleration (trapezoidal or s-curve). Each axis control is implemented through a dual closed loop, one for position and another for velocity with a cycle update time of 220 microseconds. The system provides absolute accuracy of 0.36 degree and position repeatability of ± 0.18 degree at maximum motor speed of 3000 rpm. The electronics developed is robust, compact and immune to electromagnetic interference with a sufficient scope for future expansion of the system.
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Seema Singhai
Seema Singhai received the BE degree in electrical Engineering from Ravishankar University Raipur in 1988 and ME degree with honors from University of Roorkee, Roorkee in 1996.
From 1989 to 1997 she was Assistant Professor in the department of Electrical Engineering of Bhilai Institute of Technology, Durg. Currently she is a scientific officer in Industrial CO2 laser section, Centre for Advanced Technology, Indore. Her current research lie in the area of Power Electronics, digital control of Drives and their application to Motion control and Robotics.