基于鲁棒滤波理论的钒自给能探测器动态补偿算法研究

Research on the Dynamic Compensation Algorithm of Vanadium Self-Powered Neutron Detector Based on Robust Filtering Theory

先进堆芯监测系统中的钒自给能探测器信号可用于重构堆芯的三维功率分布。由于自给能探测器对通量变化的响应存在延迟,为保证中子通量测量的准确性,需要对自给能探测器的输出响应进行动态补偿。本文基于鲁棒性滤波理论进行了钒自给能探测器响应延迟消除的算法研究,将相应滤波器的设计转化为线性矩阵不等式(LMI)的求解。数值模拟结果表明基于鲁棒滤波理论设计的3种滤波器均可以起到良好的延迟消除效果,并且可以有效抑制噪声的放大。

Vanadium self-powered neutron detector （SPND） signal can be used to reconstruct core three-dimensional power distribution. Due to the delayed detector current response to flux variation, the dynamic compensation of the vanadium self-powered neutron detector current is needed to ensure the veracity of the neutron flux measurement. This research is focused on SPND dynamic compensation algorithm based on robust filter theory, and the filter design problems are solved via the convex optimization framework using linear matrix inequalities. The numerical simulation results show that three filter based on robust filtering theory all can provide a reasonable balance between response speed and noise suppression.