Non-contacting measuring system for precision characteristics, p

Details Non-contacting measuring system for precision characteristics, p Non-contacting measuring system for precision characteristics, p

1988-06-06

1989-11-14

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250231SE, 901 47, G01N 2186

Patent

active

048809926

ABSTRACT:
A non-contacting measuring system, particularly for industrial robots, for acquiring the position of two coordinate systems, comprising sensors, in particular a stationary coordinate system lying in a measuring plane and of a moving coordinate system, particularly for the acquisition of absolute position and repetitive accuracy of industrial robots, comprises a bipartite measuring system including a precision turn table with a precision sensor comprising a distance sensor and an optical sensor and a planar measuring subject lying in the measuring plane. The distance from the measuring plane and the tilt about the x axis and the y axis are calculated from the distance sensor signals. The rotation about the z axis and the displacement in the x direction and the y direction are calculated by sensing a line pattern.

REFERENCES:
patent: 4621926 (1986-11-01), Merry et al.
patent: 4642781 (1987-02-01), Szonyi
patent: 4651283 (1987-03-01), Sciaky et al.
patent: 4791588 (1988-12-01), Onda et al.
"Enhancing Robot Performance Measurement", Mar. 1986, The Industrial Robot.
"Theory, Experimental Results & Recommended Standards Regarding the Static Positioning and Orienting Precision of Industrial Robots", Robotics & Computer--Integrated Mfg., vol. 2, No. 3/4, pp. 247-259, (1985).
"Quasi--Static Performance of Robots", Robotics & Computer Integrated Manufacturing, vol. 2, No. 3/4, pp. 261-278, (1985).

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