Switched adaptive control of air handling units with discrete and saturated actuators

Journal article (2018)

Authors

S. Yuan , Harbin Institute of Technology

Lixian Zhang Harbin Institute of Technology

Ondrej Holub Honeywell Prague Laboratory

S. Baldi

DOI: https://doi.org/10.1109/LCSYS.2018.2840041

Air handling units Discrete input Dwell time Input saturation Switched adaptive control

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Published Date

2018

Language

English

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Abstract

This letter introduces a new switched adaptive control mechanism that can cope with parametric uncertainty while using discrete and saturated actuators. Control of air handling units (AHUs), where air and water supply have discrete and saturated characteristics, is the motivational drive behind this letter. We show that the cheap actuation and low computational requirements of building automation installations can be met after recasting the AHU thermal dynamics as a switched linear system with discrete working modes. Adaptive laws with anti-windup compensation and a switching law based on dwell time are introduced to cope with the uncertainties and input constraints of the switched linear system. Tracking performance is shown analytically and demonstrated via a numerical test case.

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