document: New tuning method for PID controller In this paper , a tuning method for proportional-integral-derivative -LRB- PID -RRB- controller and the performance assessment formulas for this method are proposed . This tuning method is based on a genetic algorithm based PID controller design method . For deriving the tuning formula , the genetic algorithm based design method is applied to design PID controllers for a variety of processes . The relationship between the controller parameters and the parameters that characterize the process dynamics are determined and the tuning formula is then derived . Using simulation studies , the rules for assessing the performance of a PID controller tuned by the proposed method are also given . This makes it possible to incorporate the capability to determine if the PID controller is well tuned or not into an autotuner . An autotuner based on this new tuning method and the corresponding performance assessment rules is also established . Simulations and real-time experimental results are given to demonstrate the effectiveness and usefulness of these formulas
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