NDLI: Fault Detection and Diagnosis of Valve Actuators in Discharge Air Temperature (DAT) Systems, using Interactive Unscented Kalman Filter Estimation

Content Provider	IEEE Xplore Digital Library
Author	Tudoroiu, N. Zaheeruddin, M.
Copyright Year	2006
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que. (Tudoroiu, N.)
Abstract	Nowadays monitoring and controlling the modern and sophisticated heating ventilation air conditioning (HVAC) building systems under a wide variety of occupancy and load related operating conditions is becoming a difficult and challenging task. Their complexity drastically increases and the control becomes more difficult task due to the several control loops that interact between them. Among these control loops the discharge air temperature (DAT) loop, the static pressure loop (SP), and the variable air volume (VAV) terminal unit loop are the candidate loops requiring frequent re-tuning. Equipment failures and loss of control leading to less than acceptable indoor environment conditions is a common problem reported in these systems. In our paper we consider the degradation in the DAT loop performance caused by a gradual increase in backlash of the valve actuator. The main objective of this paper is to describe the application of an interactive multiple model (IMM) based on the unscented Kalman filter (UKF) estimation algorithm (IMMUKF) to the problem of fault detection diagnosis and isolation (FDDI) of the valve actuator failures in DAT loop of the HVAC systems. The proposed algorithm is an alternative to the interactive multiple model (IMM) developed in the literature based on the extended Kalman filter standard technique, the most popular estimation technique used in the last 40 years. The main advantage of the proposed algorithm is the less computation, consequently more faster, high accuracy, robustness and eliminates completely the linearization of the system dynamics
Starting Page	2665
Ending Page	2670
File Size	6003262
Page Count	6
File Format	PDF
ISBN	1424404967
DOI	10.1109/ISIE.2006.296033
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-07-09
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fault detection Fault diagnosis Valves Actuators Temperature control Control systems Condition monitoring Heating Ventilation Air conditioning
Content Type	Text
Resource Type	Article

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