Automatic tuning of nonlinear PID controllers for unsymmetrical processes

Qing Guo Wang, Chang Chieh Hang, Wei Zou

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


Relay auto-tuning of linear PID regulators is now a proven technology in the process control industry. In this paper it is extended to auto-tune nonlinear PID controllers for unsymmetrical processes. Two sets of PID parameters, each for one operating mode, are obtained with a single relay experiment. Excellent performance of the auto-tuned nonlinear control system is substantiated by simulations.

Original languageEnglish
Pages (from-to)687-694
Number of pages8
JournalComputers and Chemical Engineering
Issue number4-5
Publication statusPublished - 20 Apr 1998
Externally publishedYes

ASJC Scopus subject areas

  • General Chemical Engineering
  • Computer Science Applications


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