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An ASABE Meeting Presentation
Paper Number: 073022
A Multi-Objective Compatible Control (MOCC) Algorithm for the Greenhouse Energy-Saving Control
Lihong Xu, Professor
Michigan State University, Department of Electrical and Computer Engineering, Michigan State University, East Lansing, MI 48824, firstname.lastname@example.org
Qingsong Hu, Doctor
Tongji University, 1239#,Siping Rd., Shanghai 200092, China, Hu.email@example.com.
Written for presentation at the
2007 ASABE Annual International Meeting
Sponsored by ASABE
Minneapolis Convention Center
17 - 20 June 2007
Abstract. 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.
Keywords. Greenhouse, Energy-saving, Multi-objective Control, Compatible
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