الفهرس Only 14 pages are availabe for public view
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Abstract
IN RECENT YEARS FUZZY CONTROL HAS GROWN IN POPULARITY ITS USES HAVE BEEN PROPOSED IN APPLICATIONS THAT EXTEND BEYOND THOSE WHICH IT IS SOUGHT TO REPLACE HUMAN OPERATORS. FUZZY CONTROL IS NOW OFTEN CONSIDERED FOR APPLICATIONS WHICH HUMAN OPERATOR HAVE BEEN NEVER USED E.G. SERVOMECHANISM. IN SUCH APPLICATIONS, IT IS THE FACILILTY OF FUZZY SYSTEMS TO ACT AS A FUNCTION APPROXIMATES. THE LEAD SCREW IS THE MAIN PLAYER IN MOST TRACKING SYSTEMS, AND MACHINE TOOLS. IN THIS THESIS WE PROPOSE TWO ADAPTIVE COMPENSATION TECHNIQUES TO IMPROVE THE MOTION ACCURACY OF LEAD SCREW SYSTEM IN TRAJECTORY TRACKING AS WELL AS POSITIOING TASKS.THE DEADZONE OF THE ACTUATOR AND THE STATIC FRICTION OF THE MECHANICAL PARTS SEEM A DEADZONE ON THE COMMAND VOLTAGE VERSUS ACTUAL MOTHION CURVE AND CONSIDERABLY REDUCU THE MOTION ACCURACY.