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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Improvement of Residual Vibrations for Intermittent Positioning Tables

Lin, Cheng-feng 04 September 2004 (has links)
Recently, many industries pursue the goal of automatic high-speed assembly and manufacturing. So how to meet the requirement of high-precision and high-speed automatic assembly equipment is an important issue. In automatic assembly equipment, the inappropriate acceleration or deceleration motion will cause unsuitable inertia force and vibration to the positioning table. In order to reach the high production efficiency level, the problems of shortage of motor power, poor positioning accuracy, residual vibration, and noise shall be analyzed and solved. In previous researches, the researchers all devote to study acceleration and deceleration based on symmetrical time chart. In this paper, we change the accelerating and decelerating phase to reduce inertia force and decrease residual vibration of point-to-point motion. The system model is built to simulate dynamic response of the system. Through the results of simulation and experiment, we will discover the relations between the properties of motion and residual vibration about the high-speed positioning tables. It is expected to improve residual vibrations and design motion profiles according to those effective transient response control charts.

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