Part 2: Solving Robot Accuracy Issues with Calibration and Compensation

How do manufacturers address inaccuracies between nominal and actual robot paths? The answer lies in Robot-Cell Calibration, which identifies real-world deviations and compensates for them before deployment.

Step 1: Identification Phase

There are two ways to identify the Actual Parameters of a Robot-Cell:

• Manual Measurement Use metrology tools to measure every parameter—accurate but time-intensive.
• Mathematical Modeling (Preferred) Use a few key physical measurements from the cell and calculate actual parameters with specialized software.

Dynalog’s calibration process adopts the latter for speed and efficiency.

This involves:

• Collecting static position measurements strategically placed throughout the Robot-Cell’s envelope,
• Using software to compute the actual dimensional parameters from those points.

Step 2: Compensation Phase

One might think we can just swap the nominal model with the newly identified actual model. But in practice, that’s not always feasible.

Instead, Dynalog’s tools use a mathematical filter algorithm to adjust the robot path based on the known differences between Nominal and Actual parameters — before downloading the path to the robot.

This ensures:

• Greater positioning accuracy,
• Reduced collisions and rework,
• Improved repeatability and flexibility across production lines.

How Dynalog Helps

Dynalog’s solutions—such as DynaCal—make it easy to:

• Identify the true parameters of your Robot-Cell,
• Compensate for inaccuracies in real time,
• Maintain calibration over time, especially after a Robot-Cell is moved or retooled.

In an era where speed, adaptability, and precision are essential, robot calibration is not a luxury—it’s a necessity. Dynalog’s calibration technologies ensure your robots hit the mark every time, even in the face of real-world variability.

Checkout Our Part 1: Why Accurate Robot-Cell Calibration Is Critical for Modern Manufacturing