Constrained predictive control of a greenhouse

  • Authors:
  • S. Piñón;E. F. Camacho;B. Kuchen;M. Peña

  • Affiliations:
  • Departamento de Ingeniería de Sistemas y Automática, Universidad de Sevilla, Camino de Los Descubrimientos s/n, 41092 Sevilla, Spain;Departamento de Ingeniería de Sistemas y Automática, Universidad de Sevilla, Camino de Los Descubrimientos s/n, 41092 Sevilla, Spain;Instituto de Automática. Fac. Ingeniería, Universidad Nac. de San Juan, Av. Libertador 1109, Oeste 5400, Argentina;Instituto de Automática. Fac. Ingeniería, Universidad Nac. de San Juan, Av. Libertador 1109, Oeste 5400, Argentina

  • Venue:
  • Computers and Electronics in Agriculture
  • Year:
  • 2005

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Abstract

A scheme for temperature control of a greenhouse is presented. The present work proposes an approach based on a combination of two different control schemes: Feedback Linearization (FL) and standard linear Model Predictive Control (MPC), using their advantages. The treated greenhouse is considered a non-linear Single-Input-Single-Output process and subject to strong external disturbances. Since the methodology used for solving the MPC+FL approaches generally leads to an optimization problem subject to state-dependent non-linear constraints, an alternative for its implementation is discussed. Two control techniques are compared, namely MPC+FL and Non-linear Model Predictive Control (NLMPC).