Selecting PID control gains for nonlinear HVAC&R systems.(proportional-integral-derivative control on heating, ventilation, air conditioning and ... An article from: HVAC & R Research

This digital document is an article from HVAC & R Research, published by American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc. on November 1, 2009. The length of the article is 10348 words. The page length shown above is based on a typical 300-word page. The article is delivered in HTML format and is available immediately after purchase. You can view it with any web browser.

From the author: While the dynamics of most HVAC&R processes are inherently nonlinear, a majority of HVAC&R systems utilize simple linear controllers, such as the proportional-integral-derivative (PID) controller. Although PID controllers are a time-tested and effective control strategy, most are improperly tuned or tuned for only one operating condition. As a result, these systems operate inefficiently and often exhibit poor performance. This study addresses the challenges of tuning PID controllers for HVAC&R systems. This paper presents recent advances in PID control design and extends and adapts these techniques for nonlinear HVAC&R systems. Two examples--namely temperature control of a variable air volume (VAV) unit, and evaporator superheat control using an electronic expansion valve--illustrate the efficacy of the techniques presented here.

Citation Details
Title: Selecting PID control gains for nonlinear HVAC&R systems.(proportional-integral-derivative control on heating, ventilation, air conditioning and refrigeration systems)(Report)
Author: Dongwon Lim
Publication:HVAC & R Research (Magazine/Journal)
Date: November 1, 2009
Publisher: American Society of Heating, Refrigerating, and Air-Conditioning Engineers, Inc.
Volume: 15 Issue: 6 Page: 991(29)

Article Type: Report

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