The invention belongs to the technical field of production plan scheduling, and discloses a production plan scheduling method and
system of an MES
system. The method comprises the following steps: preprocessing
production order data to generate a comprehensive scheduling value priority sequence; based on the comprehensive scheduling value priority sequence, compatibility combination groups are sequentially obtained, a scheduling scheme
population is constructed, multi-objective evolution fitness is calculated based on the delivery time
satisfaction rate, the switching cost, the work-in-process
turnover time and the repair
risk index, non-dominated sorting, congestion distance evaluation, selection, intersection and
mutation operation are executed, and an
optimal scheduling scheme is generated; verifying the
optimal scheduling scheme, and generating a
verification passing scheme set and a
verification failing scheme set; if the
verification is not passed, returning to re-optimize, and if the verification is not passed, generating a scheduling instruction and issuing and executing the scheduling instruction; the production scheduling accuracy is improved, the order
response period is shortened, and the process switching burden is reduced.