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Intelligent Guideways to Improve Servo Control Performance of NC Machine Tools

Research Project

Project/Area Number 12450058
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 機械工作・生産工学
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

KAKINO Yoshiaki  Kyoto University, Department of Precision Engineering, Professor, 工学研究科, 教授 (00026204)

Co-Investigator(Kenkyū-buntansha) TAKESHITA Torao  Mitsubishi Electric Corporation Nagoya Works, Numerical Control System Department, Councilor, 名古屋製作所・NCシステム部, 参事(研究職)
NAKAMURA Shinya  NSK Ltd., Precision Machinery and Parts Technology Center, Manager, 精密技術開発センタ, 部長(研究職)
MATSUBARA Atsushi  Kyoto University, Department of Precision Engineering, Associate professor, 工学研究科, 助教授 (80243054)
竹下 虎男  三菱電機(株), 名古屋製作所・NCシステム部, 参事(研究職)
Project Period (FY) 2000 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥11,400,000 (Direct Cost: ¥11,400,000)
Fiscal Year 2001: ¥4,100,000 (Direct Cost: ¥4,100,000)
Fiscal Year 2000: ¥7,300,000 (Direct Cost: ¥7,300,000)
KeywordsServo control system / Damping control / Pneumatic control system / CNC machine tools / linear guideway / 直道ガイド
Research Abstract

1. Development of the contact-type Intelligent Guideway on a test stand of a two-axis feed drive The Intelligent Guideway is a roller guideway with brake shoes installed on the guide rail. By controlling the braking force, one can dynamically control the friction on the guideway. We developed a test stand of a two-axis feed drive with the proposed Intelligent Guideway to evaluate its effectiveness. A pneumatic actuator with using a high-speed electronic valve is used to control brakes. Particularly in latest high-speed, high-acceleration NC machine tools, the structural vibration is a critical issue that has a significant effect on the closed-loop stability and contouring accuracies. By employing the Intelligent Guideway in feed drive systems, the damping characteristics of such structural vibration can be improved. Experimental studies on the test stand validated the dynamic damping given by the Intelligent Guideway to low-frequency structural vibrations, and the significant improvement in the system's closed-loop response.
2. Comparison studies of damping control schemes for feed drive systems In order to address vibration issues in feed drive systems such as the machine's structural vibration or the longitudinal vibration of the ball screw, various damping control schemes have been proposed. In particular, the effectiveness of the relative velocity feedback control scheme was mathematically analyzed and compared with different setups. Basically, this scheme implements an additional feedback loop of the difference between the linear velocity of the table and the rotational velocity of the servo motor. The relative velocity can be feedbacked to either the servo motor control system or directly to the table. In order to feedback the relative velocity directly to the table, the Intelligent Guideway can be used.Theoretical, simulation, and experimental comparison studies were conducted with various types of relative velocity control schemes.

Report

(3 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] 松原 厚, 茨木 創一, 垣野 義昭, 遠藤 雅也, 梅本 雅資: "NC工作機械送り系の振動制御(第1報)-速度制御則の比較-"2001年度精密工学会秋季大会学術講演会講演論文集. 505 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 松原 厚, 垣野 義昭, 梅本 雅資: "相対速度フィードバックによるNC工作機械送り駆動の高速・高精度化(第1報)-制御理論-"2001年度精密工学会春季大会学術講演会講演論文集. 452 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] A. Matsubara, S. Ibaraki, Y. Kakino, M. Endo, and M. Uroemoto: "Vibration Control for Feed Drive Systems in NC Machine Tools (1st Report) - The Comparison of Velocity Control Schemes -"Proc. of the 2001 Fall Japan Society for Precision Engineering Semiannual Meeting. 505. (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] A. Matsubara, Y. Kakino, and M. Umemoto: "High-speed and High-accuracy Control of Feed Drives in NC Machine Tools by Relative Velocity Feedback"Proc. of the 2001 Spring Japan Society for Precision Engineering Semiannual Meeting. 452. (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] 松原 厚, 茨木 創一, 垣野 義昭, 遠藤 雅也, 梅本 雅資: "NC工作機械送り系の振動制御(第1報) -速度制御則の比較-"2001年度精密工学会秋季大会学術講演会講演論文集. 505 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 松原 厚, 垣野 義昭, 梅本 雅資: "相対速度フィードバックによるNC工作機械送り駆動の高速・高精度化(第1報)-制御理論-"2001年度精密工学会春季大会学術講演会講演論文集. 452 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] A.Matsubara: "Servo Performance Enhancement of High Speed Feed Drives by Damping Control"Proc.of the JAPAN-USA Symposium on Flexible Automation. 2000JUFSA. 13073 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 松原厚: "相対速度フィードバックによるNC工作機械送り系の高速・高精度化(第1報)・制御理論・"2001年度精密工学会春季大会講演論文集. M04 (2001)

    • Related Report
      2000 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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