Image processing-based realization of servo motor control on a Cartesian Robot with Rexroth PLC

Abstract

The aim of this study was to separate the objects, whose position was determined using Rexroth PLC on a workbench, and bring them to different locations. Position control of synchronous motors with PLC was done with coordinates obtained by image processing. A real-time Gantry robot was set up for the study. An image taken with the camera connected to Gantry robot is transferred to the Matlab environment. The coordinate data obtained by processing the image are separated for the coordinates used, and the position control of the motors is provided. First, the image was changed to grayscale to apply image processing methods. Then, with the image processing formula, ‘viscircles’ has been applied to mark the detected circles. The obtained coordinates were transferred to IndraWorks PLC to be used in the portal robot. Objects in the determined coordinates were moved to another coordinate with the help of the pneumatic system that integrated to Gantry Robot. The system has been tested for different conditions. As a result of studies, it has been observed that both the image processing method and the system work simultaneously with high accuracy. It is thought that the study can be used in many areas in the literature.