Multivariable controller auto-tuning with its application in HVAC systems

Qing Guo Wang, Chang Chieh Hang, Yong Zhang, Qiang Bi

Research output: Contribution to journalConference articlepeer-review

16 Citations (Scopus)


In this paper, an advanced PID auto-tuner for both single- and multi- variable processes is developed and its application to HVAC systems presented. The auto-tuner exploits relay plus step test identification method to suit a wide range of processes including not only linear but also some nonlinear processes. It incorporates two latest PID design rules to achieve high control performance for processes with different dynamic characteristics. Decoupling control is used for multivariable processes. The auto-tuner was implemented on a distributed control system and practically used in industry. Experimental results exhibit the effectiveness and superior performance of the implemented auto-tuner over the manually tuned PID controller and the standard relay auto-tuner.

Original languageEnglish
Pages (from-to)4353-4357
Number of pages5
JournalProceedings of the American Control Conference
Publication statusPublished - 1999
Externally publishedYes
EventProceedings of the 1999 American Control Conference (99ACC) - San Diego, CA, USA
Duration: 2 Jun 19994 Jun 1999

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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