Research On Plant Resource-based Hierarchical Green Process Decision Model And Its Application

The rising Green Manufacture inevitably guiding future manufacturing industry has drawn extensive attention of scholars from spreading the entire world. The Green Manufacturing generally involves several research aspects as the Green Material, the Remanufacturing and Green Process Planning, among which study on Green Process Planning focuses on the environmental efficiency both in workshop process planning and producing resources, and for a feasible component process plan with admirable environmental efficiency, it attempts on descending resources consumption and waste emission on specific process planning stages. Till now, massive theoretical study results on the Green Process Planning have been achieved both domestic and overseas, specifically with the applying existing optimizing model, significant academic breakthrough of green optimization both in producing resources and process planning have been gained already. From the practical prospect however, there still presents some gaps to practicably implement the process planning based on existing green process study results, and for a feasible concerning orientation is introducing green process decision strategy model as complement of current process planning model.Intensive study on the green process planning model has been implemented in this paper under the background of the National Science & Technology Pillar Program during the 12 th Five-year Plan Period. This study proposes a multi-method(BNF(Backus-Naur Form) frame, binary tree, production rules, and objective-oriented methodology) hybrid frame model of process planning and reasoning mechanism. In this model, the hierarchical BNF frame was applied to modeling the structure of parts, the stages of process decisions and the existing green process indicators set. Then, two “procedure” programs were designed for the information exchange among the above models. This green-process planning model was proposed based on the traditional intelligent process planning model and was intended to introduce an overall(compared with the traditional partial green-process planning model) green-process decision mode. In the last section of this paper, a case study of the green-process planning for a stepped shaft is provided along with a number of essential knowledge models to illustrate the feasibility of this hybrid knowledge model.