Method for improving robot accuracy

Details Method for improving robot accuracy Method for improving robot accuracy

1990-08-01

1992-04-14

MacDonald, Allen R.

Robots

Counterbalance

901 47, H05K 338, B23P 1900

Patent

active

051053683

ABSTRACT:
The positional error of a robotic manipulator (20,22) within its workspace (38) can be reduced by advantageously mapping the manipulator positional error at each of a plurality of grid points (44) within the workspace. Such mapping is carried out by placing a grid (40) containing uniformly spaced grid points (44) in the workspace and then measuring the manipulator error at each grid point. From the map of manipulator positional error values, the manipulator positional error at any point in the workspace can easily be obtained by interpolation.

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