Spatial control of advanced heavy water reactor by fast output sampling technique

R. Munje, P. Londhe, J. G. Parkhe, B. Patre, A. Tiwari
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引用次数: 11

Abstract

In this paper, a spatial control strategy based on Fast Output Sampling (FOS) technique is proposed for Advanced Heavy Water Reactor (AHWR). The non-linear model of AHWR, represented by 90 first order differential equations having 5 inputs and 18 outputs, is linearized to obtain standard state-space representation. Using similarity transformation, the original higher order, ill-conditioned discrete system of AHWR is first decomposed into two comparatively lower order subsystems, namely, `slow' and `fast' subsystem of orders 73 and 17 respectively. Now, state feedback controls are designed separately for slow and fast subsystem and then a composite controller is obtained using these individual state feedback controls, which is then realized using FOS feedback gain. Thus, the states of the system are not required for feedback. The efficacy of the controller has been demonstrated by simulation of transient behavior of non-linear model of AHWR. Performance of the controller is found to be satisfactory.
基于快速输出采样技术的先进重水堆空间控制
针对先进重水反应堆(AHWR),提出了一种基于快速输出采样技术的空间控制策略。将AHWR非线性模型线性化,得到标准的状态空间表示,该模型由90个5输入18输出的一阶微分方程表示。首先利用相似变换将原AHWR高阶病态离散系统分解为两个较低阶子系统,即73阶的“慢”子系统和17阶的“快”子系统。目前,先对慢速子系统和快速子系统分别设计状态反馈控制,然后利用这些单独的状态反馈控制得到复合控制器,再利用FOS反馈增益实现复合控制器。因此,反馈不需要系统的状态。通过对AHWR非线性模型的暂态行为仿真,验证了该控制器的有效性。结果表明,该控制器的性能令人满意。
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