在延迟分布和DoS攻击下的不确定NCS的交换式事件触发控制
1Department of Mathematics, School of Mathematics and Computer Science, Nanchang University, Nanchang 330031, Jiangxi, China.
ISA transactions
|April 7, 2024
概括
本研究介绍了面临拒绝服务 (DoS) 攻击和时间延迟的网络系统的事件触发控制. 这种新方法减少了数据传输,并提高了不确定性下的系统稳定性.
科学领域:
- 控制系统工程 控制系统工程
- 网络系统安全 网络系统安全
- 网络物理系统 网络物理系统
背景情况:
- 网络控制系统 (NCS) 面临时间变化的延迟和拒绝服务 (DoS) 攻击的挑战.
- 传统的事件触发控制机制可能无法最佳地处理DoS攻击和延迟的动态性质.
- 降低通信负载,同时保持系统稳定性,对于NCS性能至关重要.
研究的目的:
- 在DoS攻击下开发一个类似切换的事件触发控制策略,用于不确定的NCS,在DoS攻击下有时间变化的延迟.
- 根据攻击的存在,通过自适应地选择触发条件来最大限度地降低通信开销.
- 加强NCS的稳定性分析,考虑到概率性的时间变化延迟和DoS影响.
主要方法:
- 设计一种新的切换类事件触发机制,适应DoS攻击条件.
- 开发一种新的时间延迟系统模型,适应概率性的时间变化延迟.
- 运用利亚普诺夫函数方法和线性矩阵不等式 (LMI) 技术进行稳定性分析.
- 考虑最大连续数据包损失和延迟限制的稳定性标准的推导.
主要成果:
- 拟议的事件触发机制显著减少数据包传输.
- 与传统方法相比,可以实现更大的时间变化延迟上限.
- 建立了足够的条件,以实现平均平方意义上的指数稳定.
- 由此衍生的稳定性标准使得通信参数和控制器增益的估计成为可能.
结论:
- 类似切换的事件触发控制有效地提高了在DoS攻击和时间延迟下不确定的NCS的稳定性和效率.
- 开发的理论框架为设计安全可靠的网络控制系统提供了宝贵的工具.
- 模拟结果验证了改进的性能,包括减少触发频率和更快的融合.
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