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Multi-objective optimization of high-speed milling with parallel genetic simulated annealing
Authors:Z G Wang  Y S Wong  M Rahman  J Sun
Affiliation:(1) Department of Mechanical Engineering, National University of Singapore, 10 Kent Ridge Crescent, 119260 Singapore, Singapore
Abstract:In this paper, the optimization of multi-pass milling has been investigated in terms of two objectives: machining time and production cost. An advanced search algorithm—parallel genetic simulated annealing (PGSA)—was used to obtain the optimal cutting parameters. In the implementation of PGSA, the fitness assignment is based on the concept of a non-dominated sorting genetic algorithm (NSGA). An application example is given using PGSA, which has been used to find the optimal solutions under four different axial depths of cut on a 37 SUN workstation network simultaneously. In a single run, PGSA can find a Pareto-optimal front which is composed of many Pareto-optimal solutions. A weighted average strategy is then used to find the optimal cutting parameters along the Pareto-optimal front. Finally, based on the concept of dynamic programming, the optimal cutting strategy has been obtained.
Keywords:Multi-objective optimization  High-speed milling  Genetic algorithm
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