Robots in Architecture Forum

KUKA|prc - parametric robot control for Grasshopper => Support => Topic started by: clari on February 11, 2025, 02:48:45 AM

Title: Inaccurate Robot Movement
Post by: clari on February 11, 2025, 02:48:45 AM
Hello,

I an currently trying to do a pick & place test where the robot will place bamboo skewers to the locations that is set on a styrofoam board in a 5x7 grid. While doing the tests, I realise that there are some inaccuracy where the robot does not place the skewers at the correct position in the X and Y axis, or in the correct angle.
I have tried placing more planes in the Grasshopper file hoping that will help with correcting the robot's movement, however the robot will still move off the path.
We also  suspected that the robot may have moved out of its limits for certain axis when placing the skewers, therefore, tried placing the board closer, however, the results were still the same.

I have attached the grasshopper file and the image of the results. Any help and advice will be much appreciated. Thank you!
Title: Re: Inaccurate Robot Movement
Post by: Johannes @ Robots in Architecture on February 11, 2025, 10:48:35 PM
Hello,

Two things come to mind:
First of all, make sure that the tool and base values (XYZABC and number) are identical on the physical and simulated robot.
Secondly, I see that you are using a Lego robot. It may be the case that the robot position is not properly calibrated. I.e. the robot thinks that it is somewhere but it is physically somewhere else.

Best,
Johannes