The invention belongs to the field of
management science and
engineering, and particularly relates to a production plan optimization method based on a variable-length
chromosome genetic algorithm. Comprising the following steps: firstly, obtaining to-be-arranged order data to form a to-be-arranged order
data set; then, reading an order
data set, initializing
chromosome coding parameters and generating an initial
population; decoding the chromosomes into a
data format which can be identified by a
simulation scheduling system, namely a production plan, performing
simulation scheduling on the production plan by using the
simulation scheduling system, calculating fitness values of the chromosomes and determining an individual with the highest fitness; and selecting an excellent individual as a parent according to a fitness result, generating a filial generation through
crossover and
mutation operation, updating the
population, and repeating iteration until a convergence condition is met, so as to finally obtain a
chromosome with the highest fitness and a corresponding production plan. By combining an intelligent optimization
algorithm and a production scheduling
simulation system, efficient decision support can be provided in the enterprise production plan making stage, the plan making speed and quality are remarkably improved, and the order achievement rate and the key
resource utilization rate can be improved.