In this video we review the basic definitions of resolution, accuracy, and repeatability.

These parameters fundamentally impact the complexity, cost, and development time of a motion system. Understanding them can help you meet your requirements for performance, without adding unnecessary cost and time to market.


    • First, we discuss position resolution, often called precision, and the difference between open-loop and closed-loop resolution.
    • Second, we mention accuracy. In practice, this is the least important of the three terms. This is because calibration can improve accuracy up to the limits of the system’s resolution and repeatability.
    • Finally, we demonstrate the difference between uni-directional and bi-directional repeatability and explain why it matters.

Learn more