![]() ![]() ISO 9283 specifies that accuracy and repeatability should be measured at maximum speed and at maximum payload. Moreover, the repeatability is different in different parts of the working envelope and also changes with speed and payload. A typical robot can, of course make a positional error exceeding that and that could be a problem for the process. Repeatability is then quantified using the standard deviation of those samples in all three dimensions. Typically a robot is sent to a taught position a number of times and the error is measured at each return to the position after visiting 4 other positions. ![]() ISO 9283 sets out a method whereby both accuracy and repeatability can be measured. Repeatability is usually the most important criterion for a robot and is similar to the concept of 'precision' in measurement-see accuracy and precision. Robotics, Automation, Software, Programming, Algorithm,Īccuracy and repeatability are different measures. ![]() Fanuc Roboguide Advanced Application Simulation with English and Other Subtitles ![]()
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