Click on “Download PDF” for the PDF version or on the title for the HTML version.

If you are not an ASABE member or if your employer has not arranged for access to the full-text, Click here for options.

A Multi-Objective Compatible Control (MOCC) Algorithm for the Greenhouse Energy-Saving Control

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  2007 ASAE Annual Meeting  073022.(doi:10.13031/2013.22944)
Authors:   Lihong Xu, Qingsong Hu
Keywords:   Greenhouse, Energy-saving, Multi-objective Control, Compatible

Energy-saving control is very important in the greenhouse environment control. However, the greenhouse is a very complex system and the users have multiple objectives, there are few suitable control methods to realize this by now. In this paper, a new two-layer multi-objective compatible control algorithm is proposed for the greenhouse control problems with two conflicting control objectives, control error and energy consumption. The first layer is devoted to obtaining a user’s desired controlled objectives region, assured to be not only achievable but also Pareto-optimal. The second layer is devoted to designing an effective controller by optimizing the most important controlled objective --- energy consumption, subject to system constraints from the controlled objectives region in the first layer. This control algorithm provides an effective robust controller design method for the complex greenhouse energy-saving control with precise models and uncertain initial conditions. Simulations illustrate that the two-layer multi-objective compatible control (MOCC) algorithm has some advantages on energy-saving over traditional multi-objective control methods.

(Download PDF)    (Export to EndNotes)