基于GERT图的废旧零部件不确定性再制造工艺路线模型

With respect to the uncertain remanufacturing process in remanufacturing systems, a Graphical Evaluation and Review Technique network (GERT network) based uncertain remanufacturing process model is proposed. Firstly, the uncertainties of remanufacturing process routings are analyzed, parameters are described and four typical remanufacturing process routings are introduced. Then a uncertain remanufacturing process routings model for used components is proposed based on GERT network, in which all probable remanufacturing process routings of used components are described, and the probability of every process and time distribution function of every process time are discussed. The probability and expected time of the used components from one node to another node in the model can be acquired by signal flow graph and moment generating function. Finally, the model is applied in remanufacturing of used lathe spindle, and the result is simulated by Arena software to demonstrate the justifiability.