加速器磁铁电源PSO-LQR控制器设计与研究

摘要

磁铁电源是加速器的重要组成部分。该设计以磁铁电源为控制对象，并提出了基于 PSO 的磁铁电源 LQR控制器的设计。首先，利用现代控制理论建立了磁铁电源的状态空间模型，而后采用粒子群算法对磁铁电源 LQR控制器加权矩阵进行了优化，以保证能够为加速器快速地提供所需的磁场。仿真结果表明，该课题所采用的方法能够满足系统输出快速响应的要求，各项指标优于传统方法所得到的结果。%The magnet power supply of the accelerator is an important part of this proj ect.In this design,the magnet power supply of accelerator is taken as the control obj ect,and the design of LQR controller of magnet power supply is proposed based on PSO.The state-space model of the magnet power supply is established,then PSO algorithm is used for the weight matrices optimiza-tion of LQR controller in order to ensure that the magnet power supply can quickly provide a magnetic field required by the heavy ion accelerator.The experimental results indicate that the method can meet the requirements of fast response of the system’s output,and each control index is obviously superior to the traditional method for LQR control.