A Review on Temperature Process Control: Case Study on Boiler

Authors

  • Narong Aphiratsakun Department of Mechatronics Engineering Faculty of Engineering, Assumption University, Bangkok, Thailand
  • Virach Wongpaibool Department of Telecommunication and Electronics Engineering Faculty of Engineering, Assumption University, Bangkok, Thailand
  • Kittiphan Techakittiroj Kittiphan Techakittiroj Department of Mechatronics Engineering Faculty of Engineering, Assumption University, Bangkok, Thailand

Keywords:

Three-mode control, proportional-integral control, system transfer function

Abstract

Process control is an important aspect area to be studied as many industries are dealing with it. During a lab course in Mechatronics Engineering at Assumption University, Thailand, a temperature process control is introduced and a basic study is made. This study covers kettle and thyristor power module including a plant, thermocouple and thermistor as temperature sensors, and Bosch Rexroth Programmable Logic Controller (PLC) as a controller. This review article will be beneficial to the reader to understand the link between a mathematical model and an actual system model. To control the temperature of the boiler, a three-mode control (0%-50%-100%), and a proportional-integral (PI) control are used to vary the output responses. The three-mode control can use digital output from the PLC, while the PI control needs to use analog output from the PLC. A simulation model with MATLAB® /Simulink® is studied before the actual experiment. Students can apply the temperature process control concept to others process controls such as position control, speed control, pressure control, flow control, level control, etc.

Downloads

Issue

Vol. 15 No. 1 (2011): July 2011

Section

Articles