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Data-driven Thermal Model Inference with ARMAX, in Smart Environments, based on Normalized Mutual Information

Journal Article · · Proceedings of the American Control Conference (ACC) (Online)
 [1];  [2];  [3];  [2];  [2];  [3];  [3]
  1. Iowa State Univ., Ames, IA (United States); Carnegie Mellon University
  2. Bosch Research & Technology Center North America, Pittsburgh, PA (United States)
  3. Carnegie Mellon Univ., Pittsburgh, PA (United States)

Understanding the models that characterize the thermal dynamics in a smart building is important for the comfort of its occupants and for its energy optimization. Here, a significant amount of research has attempted to utilize thermodynamics (physical) models for smart building control, but these approaches remain challenging due to the stochastic nature of the intermittent environmental disturbances. This paper presents a novel data-driven approach for indoor thermal model inference, which combines an Autoregressive Moving Average with eXogenous inputs model (ARMAX) with a Normalized Mutual Information scheme (NMI). Based on this information-theoretic method, NMI, causal dependencies between the indoor temperature and exogenous inputs are explicitly obtained as a guideline for the ARMAX model to find the dominating inputs. For validation, we use three datasets based on building energy systems-against which we compare our method to an autoregressive model with exogenous inputs (ARX), a regularized ARMAX model, and state-space models.

Research Organization:
Carnegie Mellon Univ., Pittsburgh, PA (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Energy Efficiency Office. Building Technologies Office; National Science Foundation
Grant/Contract Number:
EE0007682
OSTI ID:
1812201
Report Number(s):
DOE-CMU--07682
Journal Information:
Proceedings of the American Control Conference (ACC) (Online), Journal Name: Proceedings of the American Control Conference (ACC) (Online) Vol. 2018; ISSN 2378-5861
Publisher:
IEEECopyright Statement
Country of Publication:
United States
Language:
English

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