An improvement on LQG controller for liquid level control of separator in an OTEC experimental plant using Uehara cycle
An improvement on LQG controller for liquid level control of separator in an OTEC experimental plant using Uehara cycle
复制标题
上原循环 OTEC 实验装置中用于分离器液位控制的 LQG 控制器的改进
DOI：
10.23919/sice.2017.8105528
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Y. Ikegami
中科院分区：
文献类型：
--
作者：
Y. Matsuda;S. Goto;T. Sugi;T. Morisaki;T. Yasunaga;Y. Ikegami
本研究提出了一种改进的控制器设计方法，用于使用上原循环的海洋热能转换 (OTEC) 工厂中分离器的液位控制。在以往的研究中，分离器液位控制的控制系统设计是基于LQG控制理论，通过固定卡尔曼滤波器进行状态估计。然而，本研究的模拟验证了积分的假设会降低状态变量的估计精度。为了解决这个问题，本研究将积分复位引入到控制系统中。通过仿真证实了所提出方法的有效性。
This research proposes an improved controller design methodology for liquid level control of separator in an ocean thermal energy conversion (OTEC) plant using Uehara cycle. In the previous research, the control system design for liquid level control of separator was conducted based on the LQG control theory with state estimation via stationary Kalman Filter. However, it is verified by the simulation of this research that an assumption on an integral degrades the estimation accuracy of a state variable. To cope with this problem, in this research, the reset of integration is introduced to the control system. The usefulness of the proposed method is confirmed through simulation.