A project in PID temperature control and loop tuning

Michael Oelschlegel, Rafic A. Bachnak

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

Automatic temperature control can be accomplished in different ways with varying degrees of accuracy. One method, PID control, normally requires a tuning process after the system is installed. This paper describes how a kiln with manual temperature control was modified to automate the process by utilizing a microprocessor-based PID controller. The controller accepts input from a "K" type thermocouple to switch the heater on and off with a solid state relay. The process variable is transmitted through a data acquisition system to a PC for storage and further analysis. This project provides valuable hands-on experience in control loop tuning and produces reasonably accurate results. The paper shows the design schematic and presents results.

Original languageEnglish (US)
Pages (from-to)13863-13873
Number of pages11
JournalASEE Annual Conference Proceedings
StatePublished - Dec 1 2003
Event2003 ASEE Annual Conference and Exposition: Staying in Tune with Engineering Education - Nashville, TN, United States
Duration: Jun 22 2003Jun 25 2003

Fingerprint

Three term control systems
Temperature control
Semiconductor relays
Tuning
Controllers
Kilns
Schematic diagrams
Thermocouples
Microprocessor chips
Data acquisition
Switches

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

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A project in PID temperature control and loop tuning. / Oelschlegel, Michael; Bachnak, Rafic A.

In: ASEE Annual Conference Proceedings, 01.12.2003, p. 13863-13873.

Research output: Contribution to journalConference article

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AB - Automatic temperature control can be accomplished in different ways with varying degrees of accuracy. One method, PID control, normally requires a tuning process after the system is installed. This paper describes how a kiln with manual temperature control was modified to automate the process by utilizing a microprocessor-based PID controller. The controller accepts input from a "K" type thermocouple to switch the heater on and off with a solid state relay. The process variable is transmitted through a data acquisition system to a PC for storage and further analysis. This project provides valuable hands-on experience in control loop tuning and produces reasonably accurate results. The paper shows the design schematic and presents results.

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