Previous Articles Next Articles
Abstract: The improvement of standard ant colony optimization (ACO) strategy is important#br# to improve the quality and efficiency for integrated process planning and scheduling (IPPS). A#br# graph-based optimization model for IPPS is constructed by means of node set, directed arc#br# set/undirected arc set and relation of AND/OR. An improved ACO for IPPS is proposed, which#br# avoids the slow convergence and the local convergence by dynamic pheromone update strategy,#br# and improves the quality by multi-objective optimization strategy. The simulation result#br# demonstrates the validity of the proposed algorithm for IPPS.#br# Key words: process planning; scheduling; integration; optimization; ant colony optimization