document: Design of PID-type controllers using multiobjective genetic algorithms The design of a PID controller is a multiobjective problem . A plant and a set of specifications to be satisfied are given . The designer has to adjust the parameters of the PID controller such that the feedback interconnection of the plant and the controller satisfies the specifications . These specifications are usually competitive and any acceptable solution requires a tradeoff among them . An approach for adjusting the parameters of a PID controller based on multiobjective optimization and genetic algorithms is presented in this paper . The MRCD -LRB- multiobjective robust control design -RRB- genetic algorithm has been employed . The approach can be easily generalized to design multivariable coupled and decentralized PID loops and has been successfully validated for a large number of experimental cases
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