Profiling control for industrial robots using a position compensator based on cutter location data

Fusaomi Nagata, Keigo Watanabe, Kiyotaka Izumi

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We have already proposed a position-based impedance control for industrial robots with an open architecture controller. In this paper, it is described on how to easily apply the impedance controlled robot to a profiling task along the object with curved surface and to improve the performance using a position compensator based on the cutter location (CL) data. The CL data generated by CAD/ CAM system have information of points along the curved surface and their normal vectors. If the object is manufactured with multiaxis numerical control (NC) machine tool, the CL data can be used as the prior information of object shape. The compensator using the CL data generates not only desired trajectory in the direction of position control but also feedforward information in the direction of force control. This technique allows us to obtain the desired trajectory without complicated teaching, and to improve the performance for profiling control. Some profiling control experiments using an industrial robot JS-10 are shown to demonstrate the effectiveness of the proposed method.

Original languageEnglish
Pages (from-to)473-477
Number of pages5
JournalSeimitsu Kogaku Kaishi/Journal of the Japan Society for Precision Engineering
Volume66
Issue number3
Publication statusPublished - 2000
Externally publishedYes

Fingerprint

Industrial robots
Trajectories
Force control
Position control
Computer aided manufacturing
Machine tools
Computer aided design
Teaching
Information systems
Robots
Controllers
Experiments

Keywords

  • 5-axis NC machine tool
  • Cutter location data
  • Feedback control
  • Feedforward control
  • Impedance control
  • Industrial robot
  • Open architecture controller
  • Profiling task

ASJC Scopus subject areas

  • Mechanical Engineering

Cite this

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abstract = "We have already proposed a position-based impedance control for industrial robots with an open architecture controller. In this paper, it is described on how to easily apply the impedance controlled robot to a profiling task along the object with curved surface and to improve the performance using a position compensator based on the cutter location (CL) data. The CL data generated by CAD/ CAM system have information of points along the curved surface and their normal vectors. If the object is manufactured with multiaxis numerical control (NC) machine tool, the CL data can be used as the prior information of object shape. The compensator using the CL data generates not only desired trajectory in the direction of position control but also feedforward information in the direction of force control. This technique allows us to obtain the desired trajectory without complicated teaching, and to improve the performance for profiling control. Some profiling control experiments using an industrial robot JS-10 are shown to demonstrate the effectiveness of the proposed method.",
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