The invention discloses a distributed flow shop
group scheduling method and
system for a reconfigurable
machine tool. The method comprises the following steps: constructing a mixed
integer linear programming model based on event points; parameters and variables related to the problem are defined, the objective of the problem is clarified, and a mathematical method is adopted to explicitly express problem constraints; establishing two
decomposition models facing the sub-batch sequence and the reconfigurable tool selection, and designing a mathematical
heuristic method based on the two
decomposition models; designing a mixed initialization method based on a mathematical
heuristic method,
a domain search operator based on problem knowledge and a
reinforcement learning selection framework, and fusing into a multi-target
algorithm based on
decomposition; and extracting a leading-edge solution set from an
algorithm operation result. According to the method, products are divided into sub-batches for scheduling,
delay caused by the fact that orders with large delivery date differences are in the same group is avoided, only slight
machining time increase is taken as the cost, it is guaranteed that the orders are delivered on time, meanwhile, the tool assembling and
setting time is shortened through the reconfigurable
machine tool characteristics, and the reconfiguration cost is reduced.