Year: 2020
Type: dissertation
Abstract: The goal of this bachelor’s thesis is to discover the principles and characteristics of a digital twin and the feedback methods available for use in a multi-robot welding cell. A digital twin is a comprehensive digital model that mirrors a physical systems behavior and can use its computational capabilities to simulate different scenarios that the physical system may encounter. Digital twin has tremendous potential in many aspects of engineering, from design to lifecycle management. \n \nA laboratory experiment was conducted in which a feedback method that was determined to be suitable for use in a welding cell was tested by measuring the seam of a t-joint workpiece in its assumed correct position and then measuring the same workpiece again after apply a random offset. The scanned positional data was then applied to a digital twin environment to replicate the offset in a digital twin model of the workpiece. \n \nThe offset of the workpiece was successfully replicated by calculating the offset and offset angle values from the post-processed raw profile data of the scans. It was concluded that the methods used in the experiment were suitable for use in robot welding cells and could potentially be further refined for more complex movements. Further study is required to produce a full feedback loop where the digital twin model could return calculated values back to the system after self-correcting.
Source: LUTPub (LUT University)
Author: Tuukka Harju
Language: English
Subfield: Industrial and Manufacturing Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W3016918454