Event-based fault-tolerant control for networked control systems applied to aircraft engine system

Event-based fault-tolerant control for networked control systems applied to aircraft engine system
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应用于飞机发动机系统的网络控制系统的基于事件的容错控制

DOI:
10.1016/j.ins.2019.10.039
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发表时间:
2020-02
影响因子:
8.1
通讯作者:
李涛
李涛
中科院分区:
计算机科学1区
文献类型:
--
作者:
李涛

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本文研究了一类受系统故障和外部干扰影响的网络控制系统(NCS)的基于观测器的容错控制(FTC)。首先,为了减少采样数据传输的数量,提出了一种改进的自适应事件触发机制(AETM),它不仅可以反映所处理的NCS的整体实时信息,而且有助于扩大应用范围。然后根据触发的输出信号,提出组合观测器来估计状态和系统故障,并进一步利用估计来设计容错控制器。通过选择增强的 Lyapunov-Kroasovskii 泛函 (LKF),以线性矩阵不等式 (LMI) 的形式给出了共同设计 AETM、观测器和控制器的两个充分条件。此外,我们采用派生方法来解决网络飞机发动机模型的稳健 FTC 问题。最后,提供了两个数值例子,通过一些模拟和比较来证明我们所获得的结果的有效性。
This paper studies the observer-based fault-tolerant control (FTC) for a class of networked control systems (NCSs) subject to system fault and external disturbance. Firstly, in order to reduce the number of sampled data transmissions, an improved adaptive event-triggered mechanism (AETM) is proposed, which can not only reflect the whole real-time information of the addressed NCSs, but also help to enlarge the application areas. Then based on the triggered output signals, a combined observer is proposed to estimate the state and system fault, and the estimations are further utilized to design the fault-tolerant controller. By choosing an augmented Lyapunov–Kroasovskii functional (LKF), two sufficient conditions on co-designing the AETM, observer, and controller are presented in terms of linear matrix inequalities (LMIs). Moreover, we adopt the derived methods to tackle the robust FTC for networked aircraft engine model. Finally, two numerical examples are provided to demonstrate the effectiveness of our obtained results by some simulations and comparisons.
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