Control loop noise rejection using fuzzy logic

doi:10.1016/S0019-0578(07)60053-6

Control loop noise rejection using fuzzy logic

2005-10-01

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DOI：10.1016/S0019-0578(07)60053-6

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This paper describes an application of fuzzy logic to noise rejection in a control loop. This new use of fuzzy logic solves the problem of sluggish control loop response when using a set-point range to stop constant valve chattering due to noise in the output signal being sent. to a control valve. Multiple related variables and a general understanding of their inter-relationship must be available for this method to be successfully applied. An overview of the specific fuzzy logic method used for this application is presented along with guidelines for the practical application. In addition, this paper includes results from the successful implementation of fuzzy logic to a control loop on a pilot plant distillation column. (c) 2005 ISA-The Instrumentation, Systems, and Automation Society.

Keyword:

fuzzy logic

noise rejection

set-point range

feedback loop

Control loop noise rejection using fuzzy logic

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