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Abstract
With the extensive growth of production industries, manufacturing, as a process, is receiving its due importance. The entire production events starting from collection of raw materials to building a finished product, are strategically encapsulated in the form of a process. The industrial revolution resulted in a substantial leap in global product requirements. A need for optimization arises in order to meet the vast requirements, safely manufacturing a product, managing the cost and a timely delivery of the product. Optimization, in general is a branch of operations research which tackles the problem of minimization or maximization. The questions such as ‘how fast?’, ‘how cheap?’, ‘how efficient?’ etc., are best addressed by an effective optimization algorithm which seeks the better answer considering the profit-loss, efficiency-accuracy, time-precision bound trade-offs. Optimization in manufacturing process is used at all stages be it strategic, tactical or operative and for each stage, objective and constraints are declared. The nature inspired optimization algorithm (NIOAs) enact the behavior of interaction of the natural habitats such as ants, flies, birds etc. and find an optimal solution to a problem. Evolutionary Algorithms (EAs), on the other hand, are simpler and based on Darwin’s theory of’Survival of The Fittest’. NIOAs such as Ant Colony Optimization (ACO), Particle Swarm Optimization (PSO), Artificial Bee Colony (ABC) etc., and EAs such as Genetic Algorithm (GA), are in present time, used to solve numerous existing optimization problems related to computer science, energy, food processing, process control, chemistry, banking and so on and also prove to be potential optimizer to many other real-life problems. This chapter leads through the basic building blocks of optimization algorithms and an attempt is made to bring into light, their uses in manufacturing process. The prerequisite concepts of maxima-minima, unimodal-multimodal problems, local optima-global optima, exploration–exploitation, gradient descent, deterministic-stochastic approaches are visited thoroughly. Three optimization algorithms namely GA, PSO and ACO are studied in detail, in line with the manufacturing operations backed by mathematical theories.
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