Please use this identifier to cite or link to this item: http://repositorio.inesctec.pt/handle/123456789/5015
Title: A feasibility study of sliding mode predictive control for greenhouses
Authors: Josenalde Barbosa Oliveira
José Boaventura
Paulo Moura Oliveira
Issue Date: 2016
Abstract: In this work, the feasibility of applying a Sliding Mode Predictive Controller (SMPC) to improve greenhouse inside air temperature control is addressed in terms of energy consumption, disturbance handling and set point tracking accuracy. Major research issues addressed concern the SMPC robustness study in greenhouse control, as well as to evaluate if the levels of performance and energy consumptions are acceptable when compared with the traditional generalized predictive controller. Besides the external disturbances related to weather conditions throughout the considered period, such as solar radiation and temperature variations, internal effects of irrigation system and external air flow entering the greenhouse must be taken into account. Simulations based on real data, carried out for a period of 4months, suggest that the strategy herein described not only appropriately rejects these disturbances, but also keeps the manipulated variables (heating and cooling) within feasible practical limits, with low levels of energy consumption, motivating its refinement for real application. SMPC results are presented and compared with the ones obtained with the generalized predictive controller. Both controllers are subject to actuator constraints and employ the Quadratic Programming for optimization. Copyright (c) 2015 John Wiley & Sons, Ltd.
URI: http://repositorio.inesctec.pt/handle/123456789/5015
http://dx.doi.org/10.1002/oca.2189
metadata.dc.type: article
Publication
Appears in Collections:CRIIS - Articles in International Journals

Files in This Item:
File Description SizeFormat 
P-00G-XBJ.pdf
  Restricted Access
2.04 MBAdobe PDFView/Open Request a copy


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.