genetic algorithm optimization toolbox;  genetic algorithms;  PID;  Parameter tuning

Genetic algorithm is a global optimization method with extremely robust and wide applicability, genetic algorithm optimization toolbox (GAOT) provides a good tool for the promotion and application of genetic algorithm, it adopts modular design, including commonly used genetic operators. In view of some limitations of traditional PID parameter tuning, the genetic algorithm optimization toolbox is used to tune the PID controller parameters. The application steps of genetic algorithm, the basic usage of GAOT and the interface method of GAOT and controller parameter tuning are analyzed, and the method is compared with the Ziegler-Nichols method and the best engineering quality method by simulation experiments. The simulation results show that the proposed method has almost no overshoot and the shortest transition time, which can significantly improve the system performance.