Distributed model predictive control with receding-horizon stability constraints

T. Tran, N. K. Quang
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引用次数: 3

Abstract

This paper presents a distributed model predictive control strategy for interconnected process systems employing predictive asymptotic constraints. The plant-wide control is facilitated by the constructive method of online stabilisations that is applicable to the model predictive controllers (MPC) as receding-horizon stability constraints. The plant-wide process is modeled as a large-scale system formed by the subsystems of different unit operations interconnected to each other. The stability condition for the interconnected system is derived from the asymptotically positive realness constraint (APRC), which is subsequently developed into a receding-horizon stability constraint for MPC. The receding-horizon stability constraint is derived from the APRC by predicting the state and control vectors toward to the end of the predictive horizon. The receding horizon stability constraint is less conservative than the previously developed constraint that applied APRC to the current time step vectors. Simulations are provided for the counter-current washing circuit to demonstrate the efficacy of the presented receding-horizon stability constraint.
具有渐退水平稳定性约束的分布式模型预测控制
本文提出了一种基于预测渐近约束的互连过程系统分布式模型预测控制策略。全厂范围的控制是由在线稳定的建设性方法促进的,该方法适用于模型预测控制器(MPC)作为后退水平稳定性约束。工厂范围的过程被建模为一个由不同单元操作的子系统相互连接形成的大型系统。由渐近正真实性约束(APRC)导出了互联系统的稳定性条件,并将其发展为渐近地平线稳定性约束(MPC)。通过对预测视界末端的状态和控制向量进行预测,从APRC中导出了后退视界稳定性约束。与先前将APRC应用于当前时间步长向量的约束相比,后退层稳定性约束的保守性更低。通过对逆流冲洗电路的仿真,验证了所提出的退层稳定性约束的有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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