【摘要】 超导托卡马克装置中性束注入(EAST-NBI)系统是一种低压大电流开关电源(特种电源)。该系统非线性较强,增益较大,传统的比例积分微分(PID)控制系统稳定性和动态响应较差。应特种电源的控制要求,引入了一种新型的结合比例积分(PI)控制与基于Laguerre函数模型的预测控制算法。详细介绍了该算法的控制律、Matlab仿真以及可编程门阵列(FPGA)编程实现。经过Matlab仿真以及开关电源平台实验表明,该控制算法比传统PI控制具有更快的动态响应和更稳定的输出。更多还原

【Abstract】 Superconducting Tokamak device neutral beam injection system is a low voltage and high current switching power supply( special power supply). The system has strong nonlinearity and large gain, so it is difficult to use conventional PID control algrithm to help the system achieve good performance in terms of system stability and dynamic response. In order to fulfill the control requirements of this system, a new control algorithm combining adaptive predictive controller using Laguerre model and PI control arithmetic is deduced. The control law, Matlab simulation and the programming implementation on field programmable gate array( FPGA)platform of this algorithm were introduced in detail. The experimental results inducted on the switching power supply platform illustrate that the control algorithm has a faster dynamic response and a more stable output than normal PI control.更多还原