English  |  正體中文  |  简体中文  |  Items with full text/Total items : 68069/68069 (100%)
Visitors : 23111021      Online Users : 335
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version


    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/26827


    Title: A NURBS CURVE INTERPOLATOR WITH JERK-LIMITED TRAJECTORY PLANNING
    Authors: Tseng,SJ;Lin,KY;Lai,JY;Ueng,WD
    Contributors: 機械工程研究所
    Keywords: PARAMETRIC INTERPOLATOR
    Date: 2009
    Issue Date: 2010-06-29 18:01:11 (UTC+8)
    Publisher: 中央大學
    Abstract: The control of the maximum acceleration and jerk in the trajectory planning of the CNC controller is very important because it affects the smoothness of the machined surface substantially. We proposed a parametric interpolator composed of a look-ahead stage and a real-time sampling stage for jerk-limited acceleration planning. A pre-sampling process was implemented in the look-ahead stage to identify the segment points, where the acceleration changed across zero. A check of the acceleration and jerk was implemented and the feedrate was modified accordingly. In addition, a backtracking process was carried out during the deceleration stage to ensure that the modified feedrate was satisfied. In the real-time sampling stage, an acceleration profile based on constant jerk was implemented for each region between two segment points. With this algorithm, we ensured that both the chord error and the maximum acceleration and jerk were within the allowable limits. Also, it kept the similarity of the speed profiles for adjacent cutting paths in zigzag machining.
    Relation: JOURNAL OF THE CHINESE INSTITUTE OF ENGINEERS
    Appears in Collections:[機械工程研究所] 期刊論文

    Files in This Item:

    File Description SizeFormat
    index.html0KbHTML695View/Open


    All items in NCUIR are protected by copyright, with all rights reserved.

    社群 sharing

    ::: Copyright National Central University. | 國立中央大學圖書館版權所有 | 收藏本站 | 設為首頁 | 最佳瀏覽畫面: 1024*768 | 建站日期:8-24-2009 :::
    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback  - 隱私權政策聲明