Parabolic position and attitude interpolation for a robot hand

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364169, 364723, 901 3, 901 4, 318573, 318568, G05B 1942

Patent

active

045503834

ABSTRACT:
A control system and method for controlling a hand of an industrial robot are disclosed wherein the hand is driven at a predetermined speed along a polygonal path defined by a plurality of straight lines which interconnect a plurality of point coordinates taught to the robot. The straight lines are continuously interconnected by a parabola at predetermined locations in the vicinity of the centers of the straight lines, wherein the hand is continuously moved along the parabola from a straight line to the next straight line, and wherein the parabola is generated by dividing a span between two predetermined positions through arithmetic linear interpolation technique in a manner in which points located between the predetermined positions are defined on a straight line interconnecting the two predetermined positions.

REFERENCES:
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patent: 3860805 (1975-01-01), Strukel
patent: 3909600 (1975-09-01), Hohn
patent: 3920972 (1975-11-01), Corwin, Jr. et al.
patent: 4158887 (1979-06-01), Kosugi
patent: 4221997 (1980-09-01), Flemming
patent: 4308584 (1981-12-01), Arai
patent: 4409650 (1983-11-01), Noguchi
patent: 4432063 (1984-02-01), Resnick
patent: 4445184 (1984-04-01), Noguchi
Robot Manipulators; MIT Press; by Richard Paul, 1981.

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