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《Journal of Zhejiang University(Engineering Science)》 2017-01
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Integration of production planning and scheduling under demand and utility uncertainties

WANG Yue;SU Hong-ye;SHAO Han-shan;LU Shan;XIE Lei;Institute of Cyber-Systems and Control,Zhejiang University;  
A multi-period bi-level integrated planning and scheduling model was formulated by considering demand and utility uncertainties in order to reduce the effects of uncertain factors in production process on production planning and scheduling.Demand and utility uncertainties were dealt with separately in planning and scheduling layers according to the difference of time scale.In planning layer,chance constraint stochastic programming was introduced to describe the demand uncertainty.An uncertain discrete-time linear programming model was formulated based on discrete-time modeling method.The fluctuations of production rate and deviations from the reference limits of inventory were considered.In scheduling layer,the fuzzy theory was utilized to describe the utility uncertainty.An uncertain continuoustime mixed-integer linear programming model related to multistage multipurpose batch process was formulated based on unit-specific event-based continuous-time modeling method.The bi-level planning and scheduling models were iteratively solved by rolling horizon optimization strategy.The feasibility and effectiveness of the proposed model was illustrated through a benchmark example from literatures.The proposed method can effectively reduce the effects of the two uncertainties and increase the utilization of equipments and utilities.
【Fund】: 国家“863”高技术研究发展计划资助项目(2014AA041803);; 国家自然科学基金资助项目(61134007)
【CateGory Index】: F274
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