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EP0321579A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Articulated robot controller

Assignee: Fanuc Corp
•
Filing: 1988-06-17
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Granted: —
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Expires: 2008-06-17
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Abstract

Abstract An articulated robot controller of the invention removes vibration from the robot arm by feedback compensation of the disturbance caused by interference torque when the robot arm is driven. The controller comprises operation means (8) which operates mutual interference torque value for each arm , condition observation means (2) for reproducing condition variables from the torque instruction of the servo-motor and the real speed thereof, conversion means (4) which converts the output of the condition observation means into a corrected value of torque caused by disturbance to the servo-motor, and correction means (9) which corrects a deviation signal of torque instruction in the servo motor relying upon the corrected value thus converted and the above interference torque value.

Inventors

  • 👤 Keiji Sakamoto
  • 👤 Osamu Fanuc Dai 3 Villa Karamatsu Yoshida

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-31 06:36
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/416; G05B19/4163; B; B25; B25J; B25J9/00; B25J9/16; B25J9/1628; B25J9/1633; G05B2219/00; G05B2219/30; G05B2219/45; G05B2219/45083

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 102 words
A control apparatus for a multiple-articulated robot in which each arm is independently driven by a feedback-controlled joint driving servomotor, comprising: arithmetic means for computing mutual interference torque values for respective ones of said arms; status observing means for reproducing a status variable from a torque command and actual velocity of each servomotor; conversion means for converting an output of the status observing means into a corrective value of torque produced by disturbance acting upon the servomotor; and correcting means for correcting an error signal of the torque command of the servomotor by the converted corrective value and said interference torque value.
Claim 2
Dependent Claim 102 words
A control apparatus for a multiple-articulated robot in which each arm is independently driven by a feedback-controlled joint driving servomotor, comprising: arithmetic means for computing mutual interference torque values for respective ones of said arms; status observing means for reproducing a status variable from a torque command and actual velocity of each servomotor; conversion means for converting an output of the status observing means into a corrective value of torque produced by disturbance acting upon the servomotor; and correcting means for correcting an error signal of the torque command of the servomotor by the converted corrective value and said interference torque value.
Claim 3
Dependent Claim 22 words
A control apparatus for a multiple-articulated robot according to claim 1, characterized in that said arithmetic means is constituted by a microcomputer.

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