Original scientific paper

https://doi.org/10.7305/automatika.54-1.310

Practical Feedback Controller Design for Micro-Displacement Positioning in Table Drive Systems

Wataru Maebashi ; Department of Electrical and Computer Engineering, Faculty of Engineering, Nagoya Institute of Technology, Gokisocho, Showaku, JP-466-8555, Nagoya, Japan
Kazuaki Ito ; Department of Electrical and Electronic Engineering, Toyota National College of Technology, Aichi Prefecture, Toyota, Japan
Makoto Iwasaki ; Department of Electrical and Computer Engineering, Faculty of Engineering, Nagoya Institute of Technology, Gokisocho, Showaku, JP-466-8555, Nagoya, Japan

Abstract

This paper presents a practical feedback controller design of a ball screw-driven table system for the microdisplacement positioning. Friction of the mechanism in the micro-displacement region has nonlinear elastic properties, unlike Coulomb and/or viscous friction in the macro-displacement, resulting in different positioning responses and frequency characteristics of the plant depending on the regions. In this paper, at first, a numerical simulator with a rolling friction model is adopted to reproduce the positioning behaviors in the micro-displacement region. Based on the simulator, the stability condition of positioning in the region is clarified on the basis of frequency characteristics and, then, appropriate parameters of feedback controller are practically designed to satisfy the required positioning performance. Effectiveness of the proposed design has been verified by a series of experiments using a prototype of ball screw-driven table positioning device.

Keywords

Precision positioning; Micro-displacement region; Nonlinear friction; Stability condition

Hrčak ID:

100173

URI

https://hrcak.srce.hr/100173

Publication date:

4.4.2013.

Article data in other languages: croatian

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