PMRP Journal of Research – Part A: Computational Engineering

Title

External Feedback Control Mechanism for 3- Axis Industrial Servo System Used in Welding Application

Authors

C.Maheswari, N. Karthi, Sathish Kumar Palaniappan

Abstract

This paper deals with the monitoring and control of 3-axis Industrial servo system using auto tuning PI controller used in welding application. X and Y-axis servo motors are placed beneath the welding table to control the welding profile at varying speeds, enhancing overall welding performance. The welding electrode is fixed at the Z axis of the experimental system and it is connected through linear actuator. The linear actuator provides feed rate control of welding rod. Synchronization between Z axis and X/Y axis are done through motion control PLC programming, a closed loop simulation model is developed using MATLAB in Simulink platform. PI controller tuning parameters are obtained using auto tuning PI tuning model. The determined auto tuning PI controller tuning values were implemented for welding profile control. The movement of the linear actuator based on the type of electrodes (E6010, E6011&E6013) is controlled using motion control programming in PLC. The results of the present autotuning controller with autotuning values ensures the précised positioning control over the conventional hardware based PID control system.

Keywords

Feedback System; Autotuning PID controller; PLC; 2 Axis Industrial Servo System

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