Authors: Hong Gun Kim
Publish Date: 2012/03/29
Volume: 26, Issue: 3, Pages: 941-947
Abstract
A nano positioning control is developed using the ultraprecision positioning apparatus such as actuator sensor guide power transmission element with an appropriate control method Using established procedures a single plane XY stage with ultraprecision positioning is manufactured A global stage for materialization with robust system is combined by using an AC servo motor with a ball screw and rolling guide An ultraprecision positioning system is developed using a micro stage with an elastic hinge and piezo element Global and micro servos for positioning with nanometer accuracy are controlled simultaneously using an incremental encoder and a laser interferometer to measure displacement Using established procedures an ultraprecision positioning system 100 mm stroke and ±10 nm positioning accuracy with a single plane XY stage is fabricated Its performance is evaluated through simulation using Matlab After analyzing previous control algorithms and adapting modern control theory a dual servo algorithm is developed for a minimum order observer to secure the stability and priority on the controller The simulations and experiments on the ultra precision positioning and the stability of the ultraprecision positioning system with single plane XY stage and the priority of the control algorithm are secured by using Matlab with Simulink and ControlDesk made in dSPACEHong Gun Kim received a BS and MS degree in Mechanical Engineering from Hanyang University in 1979 and 1985 Dr Kim then went on to receive his PhD degrees from University of Massachusetts in 1992 Dr Kim is currently the Professor at the Department of Mechanical Automotive Engineering at Jeonju University in Jeonju Korea He is currently serving as an Editor of the J of KSMTE Dr Kim’s research interests are in the areas of mechanical design production engineering and composite engineering
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