在网络攻击下,适应性预定义的时间滑动模式控制用于不确定的非线性网络物理伺服系统
Saleem Riaz1, Bingqiang Li2, Rong Qi3
1School of Automation, Northwestern Polytechnical University, Xi'an, 710072, China. saleemriaznwpu@mail.nwpu.edu.cn.
Scientific reports
|March 29, 2024
概括
本研究介绍了一种新的预定义时间融合滑动模式自适应控制器 (PTCSMAC),以确保在网络物理系统 (CPS) 中精确的伺服跟踪,尽管存在恶意攻击和不确定性. 在不需要详细的系统模型的情况下,PTCSMAC控制器保证了强大的性能.
科学领域:
- 控制系统工程 控制系统工程
- 网络物理系统 (CPS)
- 机器人和自动化 机器人和自动化
背景情况:
- 网络物理系统 (CPS) 面临不可避免的恶意攻击,影响诸如伺服位置跟踪等关键功能.
- 由于网络攻击,控制和,参数扰动和外部干扰,在工业自动化中实现高精度是具有挑战性的.
- 现有的控制方法在复杂的CPS环境中经常与稳定性和奇点问题作斗争.
研究的目的:
- 设计一种新的预定义时间融合滑动模式自适应控制器 (PTCSMAC),用于在CPS中进行强大的伺服跟踪.
- 应对包括恶意网络攻击,控制和和参数不确定性在内的挑战.
- 为了提高系统性能,并消除CPS控制中的奇点问题.
主要方法:
- 设计了一种新的预定义时间 (PDT) 融合滑动模式自适应控制器 (PTCSMAC).
- 将系统升级为第三级系统,以促进适应性控制法.
- 集成了一个修改后的重量更新的极端学习机器 (ELM),以近似系统的不确定性.
- 确保控制器是非单一的,无论初始条件如何.
主要成果:
- 拟议的PTCSMAC有效应对参数扰动,控制和和网络攻击.
- 即使在不确定的系统模型中,控制器也表现出强大的性能,而不需要详细的模型信息.
- 在CPS寻找器伺服定位系统上的严格模拟验证了控制法的有效性和稳定性.
- PTCSMAC成功地消除了CPS控制中常见的奇点问题.
结论:
- 开发的PTCSMAC为CPS在不利条件下的伺服位置跟踪提供了强大而准确的解决方案.
- 控制器的无模型性质和非单一设计为实际的CPS应用提供了显著的优势.
- 该研究强调了PDT融合和ELM集成的潜力,以提高CPS安全性和性能.
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