Active vibration control of typical piping system of a nuclear power plant based on fractional PI controller

An active control method based on fractional PI is studied to reduce the vibration of the typical pipeline system of a nuclear power plant. The mathematical model of the typical piping system of the nuclear power plant is established, and the fractional-order PI output feedback controller and the fractional-order PI state feedback controller are designed to realize the active control of vibration. In view of the large number of parameters of high-dimensional fractional PI controllers and the difficulty of tuning, the sparrow search algorithm (SSA) is adopted, and the quadratic function of the system is used as the objective function to realize the tuning of the controller parameters. The fractional-order PI controller optimized based on the SSA and the integer-order PI controller are compared for experiments. The results show that the fractional-order PI controller has a better suppression effect on the vibration of the typical piping system of nuclear power plants.