Abstract As a reactor core has time-varying and nonlinear characteristics, it is difficult to achieve an ideal control effect with traditional control theory. To optimize the core power control performance, a compound control scheme is formulated that is composed of multiple controllers by weighting and switching. Firstly, the nonlinear model of a reactor core is transformed into a transfer function model. With the triangular membership function, five transfer function models under different core powers are weighted to establish the core fuzzy multimodel. Secondly, based on the fuzzy multimodel, direct switching principle and fuzzy switching principle are used to design the core power composite controller. Finally, dynamic simulation is carried out to determine the effectiveness of the core fuzzy multimodel and the performance of the switching control system. The result shows that the core fuzzy multimodel is effective and that two kinds of composite controllers can achieve good control of core power.

中文翻译：

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基于模糊多模型的压水堆堆芯功率切换控制研究

摘要 由于电抗器堆芯具有时变和非线性特性，传统控制理论难以达到理想的控制效果。为优化核心功率控制性能，制定了由多个控制器通过加权和切换组成的复合控制方案。首先，将反应堆堆芯的非线性模型转化为传递函数模型。利用三角隶属函数，对不同核心功率下的五个传递函数模型进行加权，建立核心模糊多模型。其次，基于模糊多模型，采用直接切换原理和模糊切换原理设计核心功率复合控制器。最后，进行动态仿真以确定核心模糊多模型的有效性和切换控制系统的性能。结果表明，核心模糊多模型是有效的，两种复合控制器都能很好地控制核心功率。