An RBF-ARX Model-Based Variable-Gain Feedback RMPC Algorithm

An RBF-ARX Model-Based Variable-Gain Feedback RMPC Algorithm
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基于RBF-ARX模型的可变增益反馈RMPC算法

DOI:
10.1109/access.2020.2999621
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发表时间:
2020
期刊:
影响因子:
3.9
通讯作者:
Zheng Yu
Zheng Yu
中科院分区:
计算机科学3区
文献类型:
--
作者:
Zhou Feng;Zhu Peidong;Qin Yemei;Zheng Yu

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RBF-ARX模型广泛应用于非线性系统的建模和控制,其中NARX模型的系数由RBF网络逼近。基于变增益反馈的状态反馈控制策略可以为RMPC的设计提供更多的自由度,本文提出了一种基于RBF-ARX模型的变增益反馈RMPC综合方法。首先,设计了一种多面体状态空间模型的构造方法,该方法还利用了模型参数的变化率信息来提高系统模型预测的精度。在此基础上,设计了一种鲁棒变增益反馈预测控制算法,扩大了设计自由度,提高了控制性能。最后,在CSTR流程上验证了我们的RMPC的可行性和有效性。
The RBF-ARX model has been used intensively in modeling and control of nonlinear systems, in which the coefficients of the NARX model are approximated with RBF networks. In this paper, motivated by the fact that the state feedback control policy with variable-gain feedback can support more freedom for the design of RMPCs, we propose an RBF-ARX model-based variable-gain feedback RMPC synthesis method. First, a polytopic state space model construction method is designed, in which the variation rate information of the model parameters is also utilized to improve accuracy of the system model prediction. And then, a robust variable-gain feedback predictive control algorithm is designed to enlarge design freedom and improve control performance. Finally, the verification of the feasibility and effectiveness of our RMPC is conducted on a CSTR process.
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