A robust control strategy for combining DCV control with economizer control

Shengwei Wang, Xinhua Xu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

29 Citations (Scopus)


Combining demand controlled ventilation (DCV) control and economizer control achieves acceptable and even better indoor air quality with minimum coil energy consumption. The control instability during the transition processes between different control modes are among the major difficulties faced when utilizing economizer control and when combining DCV control with economizer control in applications. A robust control strategy, using "freezing", gain scheduling, integral term reset and feedback transition control for different transition processes, is developed for addressing these problems. They are evaluated on an air handling unit (AHU) using various simulation tests. The test results demonstrate that the robust control strategy allows stable and robust AHU control.
Original languageEnglish
Pages (from-to)2569-2588
Number of pages20
JournalEnergy Conversion and Management
Issue number18
Publication statusPublished - 1 Dec 2002


  • Air handling unit
  • Demand controlled ventilation
  • Economizer
  • Gain scheduling
  • Multiple process control
  • Robust control

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Fuel Technology
  • Energy Engineering and Power Technology


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