| 引用本文: | 姜頔,刘向杰.核电站蒸汽发生器水位模糊预测控制[J].控制理论与应用,2015,32(12):1705~1712.[点击复制] |
| Jiang Di,Liu Xiang-jie.Fuzzy-model predictive control on water level of U–tube steam generator[J].Control Theory and Technology,2015,32(12):1705~1712.[点击复制] |
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| 核电站蒸汽发生器水位模糊预测控制 |
| Fuzzy-model predictive control on water level of U–tube steam generator |
| 摘要点击 2691 全文点击 2501 投稿时间：2014-10-14 修订日期：2015-06-24 |
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| DOI编号 10.7641/CTA.2015.40959 |
| 2015,32(12):1705-1712 |
| 中文关键词 模型预测控制 离线计算 U形管蒸汽发生器 线性矩阵不等式 |
| 英文关键词 model predictive control off-line computation U–tube steam generator linear matrix inequalities |
| 基金项目 国家自然科学基金项目(61273144, 61273144), 北京市自然科学基金项目(4122071), 中央高校基本科研业务费专项资金项目(2015XS65)资助. |
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| 中文摘要 |
| 在核电站运行过程中, U形管蒸汽发生器的水位作为重要参数需维持在安全的范围内. U形管蒸汽发生器
结构复杂、系统逆动态、大范围变工况下具有强非线性, 尤其在低负荷下, 采用常规控制难以取得良好效果. 本文建
立了蒸汽发生器水位模糊模型, 提出了能够满足系统输入输出约束的基于模糊模型的准–最小–最大预测控制方法.
为了减轻在线运算负担, 通过线性矩阵不等式离线计算椭圆不变集合及其对应的反馈控制律, 然后依据系统的状
态, 二等分搜索对应的椭圆不变集参数, 将在线计算简化为一个简单的优化问题. 针对水位设定值跟踪和负荷变化
的仿真结果表明了本文所提出控制策略的有效性. |
| 英文摘要 |
| In a nuclear power plant, the water level of the U-tube steam generator (UTSG) is an important process parameter
which must be maintained in a safe range. Traditional control methods encounter difficulties due to the complexity,
strong nonlinearity and inverse response dynamics, especially at low operating power levels. In this paper, the steam generator
water level dynamics is modeled into a set of fuzzy rules to represent its nonlinear dynamics. Quasi-min-max fuzzy
model predictive controller (FMPC) with constraints handling is then developed. In order to reduce the online computational
burden, a bank of ellipsoid invariant sets together with the corresponding feedback control laws are obtained by off-line
solving some linear matrix inequalities (LMIs). Based on the UTSG states, the online part is simplified to a constrained optimization
problem with a bisection search for the corresponding ellipsoid invariant set. Simulations, considering both the
water level set-point tracking and the power-level changing, are given to show the effectiveness of the proposed controllers. |
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