Fuzzy averaging level control for tight product quality control

Author:

Gupta Aayush1,Srivastava Prakhar1ORCID,Kaistha Nitin1

Affiliation:

1. Department of Chemical Engineering Indian Institute of Technology Kanpur India

Abstract

AbstractThis work develops a fuzzy averaging level controller (ALC) to mitigate flow variability while avoiding high and low level alarm limit breaches. Comparison with proportional (P) and proportional integral (PI) level controllers and their non‐linear variants demonstrates the fuzzy controller to be highly effective in mitigating flow transients for low and moderate size flow disturbances. The performance is comparable for large disturbances. Application of the developed fuzzy ALC to a ternary benzene‐toluene‐xylene direct split separation scheme as well as the separation section of a conventional cumene process demonstrates significantly superior product quality control due to flow transient variability mitigation. The product quality control variability is reduced by up to 1.5 times. The developed fuzzy ALC is therefore suitable for plant‐wide control applications.

Publisher

Wiley

Reference28 articles.

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