IP Library › Granted Patent US 10,953,540
Granted Patent B2
US 10,953,540 · App. 15/867,339 · Granted Mar 23, 2021

Robot control device

Inventors: Yuelai Wang (Yamanashi, JP); Soichi Arita (Yamanashi, JP)
Assignee: FANUC CORPORATION
B25J9/1653B25J9/1692B25J9/161G05B19/402G05B2219/37605G05B2219/39054G05B2219/39056Y10S901/09
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Quick Facts
Patent No.
US 10,953,540
App. No.
15/867,339
Granted
Mar 23, 2021
Kind
B2
Abstract

A robot control device includes a position-accuracy-information storage unit that stores position accuracy information at a plurality of division points defined when an operating area space of the multi joint robot is divided into a plurality of areas in a grid shape, a position-accuracy calculation unit that calculates position accuracy at the end-effector position based on the position accuracy information and the current end-effector position of the multi-joint robot, and a position-accuracy output unit that outputs the calculated position accuracy to an outside.

Claims (10)

1. A robot control device comprising:

a storage that stores position accuracy information at a plurality of division points defined when an operating area space of a multi joint robot is divided into a plurality of areas in a grid shape;

a position-accuracy calculator, connected to the storage, that calculates, based on the position accuracy information and a current end-effector position of the multi-joint robot, position accuracy at the current end-effector position; and

an output, connected to the position-accuracy calculator and to a display, that outputs the calculated position accuracy to the display and also outputs to the display, as a map, a distribution of the position accuracy information stored in the storage, showing regions of at least good accuracy and poor accuracy.

2. A robot control device comprising:

a storage that stores position accuracy information at a plurality of division points defined when a joint angle space of a multi joint robot is divided;

a position-accuracy calculator, connected to the storage, that calculates, based on the position accuracy information and a current joint angle of the multi joint robot, position accuracy at the current joint angle; and

an output, connected to the position-accuracy calculator and to a display, that outputs the calculated position accuracy to the display and also outputs to the display, as a map, a distribution of the position accuracy information stored in the storage, showing regions of at least good accuracy and poor accuracy.

3. The robot control device according to claim 1 , wherein the position accuracy information comprises a difference value between an actual position of the multi joint robot that has been measured in advance and an instructed position.

4. The robot control device according to claim 2 , wherein the position accuracy information comprises a difference value between an actual joint angle of the multi joint robot that has been measured in advance and an instructed joint angle.

Assignments (2)
CORRECTIVE ASSIGNMENT TO CORRECT THE FILING DATE INSIDE THE ASSIGNMENT DOCUMENT PREVIOUSLY RECORDED AT REEL: 044603 FRAME: 0326. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNMENT. Recorded Aug 1, 2018
From: WANG, YUELAI; ARITA, SOICHI
To: FANUC CORPORATION
Reel/Frame 046580/0424 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 11, 2018
From: WANG, YUELAI; ARITA, SOICHI
To: FANUC CORPORATION
Reel/Frame 044603/0326 →
Priority Claims (1)
JP JP2017-006071 · Jan 17, 2017 · national
Continuity (1)
Related Publication 20180200886A1 · Jul 19, 2018
Cited By (1)
US 12,649,236