Model-based controllers for indoor climate control in office buildings - Complexity and performance evaluation
Journal article, 2014

Model-based controllers are equipped with an integrated control model and utilize information about disturbances that act on the process. It is well established that the performance of building automation systems can be drastically improved by model-based controllers, but, they also lead to a substantial increase of complexity which is an obstacle for large scale implementation. In this work, model-based controllers with different measured disturbances as exogenous inputs and different types of control models were evaluated to explore the possibility of reducing complexity without compromising performance. The work was performed in a simulated environment and focuses on temperature and CO2 concentration control in individual office rooms during periods that are dominated by occupancy. All relevant internal and external disturbances in office environments were considered as both single input and combined inputs to six different control models. The key finding is that controllers with simplified control models and fewer exogenous inputs can perform almost as well as more complex controllers.

CO2 control

Building climate control

Temperature control

Building automation

Model-based control

Office buildings

ventilation and air-conditioning


Predictive control

Energy efficiency


Mattias Gruber

Chalmers, Civil and Environmental Engineering, Building Services Engineering

Anders Trüschel

Chalmers, Civil and Environmental Engineering, Building Services Engineering

Jan-Olof Dalenbäck

Chalmers, Civil and Environmental Engineering, Building Services Engineering

Energy and Buildings

0378-7788 (ISSN)

Vol. 68 Part A 213-222

Driving Forces

Sustainable development

Innovation and entrepreneurship

Areas of Advance

Building Futures (2010-2018)


Subject Categories

Energy Engineering



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