Study of PH control process using fuzzy modelling

Bhooshan Kelkar, Bruce Postlethwaite

Research output: Chapter in Book/Report/Conference proceedingChapter

6 Citations (Scopus)


The inherent nonlinearity of the pH process often renders conventional control difficult. This non-linearity does however suggests that pH control would be a suitable application area for a fuzzy control system, whose ability to handle non-linearities is well known. Many fuzzy controllers are of the rule based type where the controllers output response is described by a series of control rules. However, the controller described in this paper is of a fuzzy-model based type which means that a fuzzy model of the process itself is embedded into the predictive control structure. Current work presents the performance of a fuzzy-model based pH controller for a strong base-weak acid neutralisation carried out in a constant volume CSTR. The performance of the fuzzy-model based controller is tested for various set points on the neutralisation curve.
Original languageEnglish
Title of host publicationProceeding from the International Conference on Control 1994
Number of pages3
Volume1 & 2
ISBN (Print)0-85296-612-1
Publication statusPublished - Mar 1994


  • PH control process
  • fuzzy modelling

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