Accuracy

Accuracy – how closely a robot can reach a commanded position. Accuracy can vary with speed and position within the working envelope and with payload (see compliance). It can be improved by Robot calibration. Accuracy is the ability of the machine to locate to a fixed mechanical position and manufacture parts to a specified tolerance in a controlled production environment. Accuracy is rarely specified, by robot manufacturers but it is likely to be at least four times larger than repeatability. Dynamic precision, or the repeatability and accuracy in tracking position, velocity, and acceleration on a continuous path, is not usually specified.

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