An overview of calibration technology of industrial robots

TLDR

Industrial robots, essential to automated production lines and used in tasks such as spraying, welding, and handling, are increasingly high‑precision and intelligent, yet their calibration remains crucial for accuracy and requires further parameter‑identification work. The paper aims to summarize parameter‑calibration methods, discuss their pros and cons, illustrate their application, and identify remaining calibration challenges for future research. The authors review parameter‑identification techniques for serial and parallel robots, summarizing calibration methods, their advantages and disadvantages, and their practical applications. The overview provides valuable guidance for manufacturers in selecting appropriate identification methods and highlights future research directions.

Abstract

With the continuous improvement of automation, industrial robots have become an indispensable part of automated production lines. They widely used in a number of industrial production activities, such as spraying, welding, handling, etc., and have a great role in these sectors. Recently, the robotic technology is developing towards high precision, high intelligence. Robot calibration technology has a great significance to improve the accuracy of robot. However, it has much work to be done in the identification of robot parameters. The parameter identification work of existing serial and parallel robots is introduced. On the one hand, it summarizes the methods for parameter calibration and discusses their advantages and disadvantages. On the other hand, the application of parameter identification is introduced. This overview has a great reference value for robot manufacturers to choose proper identification method, points further research areas for researchers. Finally, this paper analyzes the existing problems in robot calibration, which may be worth researching in the future.