| Summary: | 碩士 === 國立臺灣大學 === 工業工程學研究所 === 104 === Plant factory is an environmental controlled facility which can sustain the stable crop cultivation with fast production and better quality by setting temperature, humidity, lighting, nutrient supply and other cultivating factors. In this study, we focus on the crop-scheduling problem for a plant factory and consider the special property of crops which can be harvested multiple times. This scheduling problem is formulated as a mixed integer programming (MIP) problem. The objective function is defined as to find the maximum revenue for the plant factory under the consider of different practical condition including types of crops, cultivation room number, cultivation room space, heterogeneous harvesting amount among different environment of cultivation room and multiple harvesting period. This study develops a heuristic algorithm method (Lagrangian relaxation method) to solve problem in a large scale for searching a good solution in an effective way.
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