On-line adaptive control of a direct expansion air conditioning system using artificial neural network

Ning Li, Liang Xia, Deng Shiming, Xiangguo Xu, Ming Yin Chan

Research output: Journal PublicationArticlepeer-review

30 Citations (Scopus)

Abstract

A common issue to all controllers, including the previously developed artificial neural network (ANN)-based controller for a direct expansion (DX) air conditioning (A/C) system, developed based on system identification is limited controllable range. To address the issue, an ANN-based on-line adaptive controller has been developed and is reported. The ANN-based on-line adaptive controller was able to control indoor air temperature and humidity simultaneously within the entire expected controllable range by varying compressor and supply fan speeds. The controllability tests for the controller were carried out using an experimental DX A/C system. The test results showed the high control accuracy of the ANN-based on-line adaptive controller developed, within the entire range of operating conditions. It was able to control indoor air dry-bulb and wet-bulb temperatures both near and away from the operating condition at which an ANN-based dynamic model in the ANN-based on-line adaptive controller was initially trained.

Original languageEnglish
Pages (from-to)96-107
Number of pages12
JournalApplied Thermal Engineering
Volume53
Issue number1
DOIs
Publication statusPublished - 2013

Keywords

  • Adaptive control
  • Air conditioning
  • Artificial neural network
  • Controllable range
  • Direct expansion
  • On-line

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Industrial and Manufacturing Engineering

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