Co‐design of memorized controllers for global sampled‐data stabilization a class of nonlinear system with input delay
Co‐design of memorized controllers for global sampled‐data stabilization a class of nonlinear system with input delay
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DOI：
10.1049/cth2.12453
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发表时间：
2023-03
期刊：
影响因子：
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通讯作者：
K. Cao;C. Qian;Shihua Li;Juping Gu
中科院分区：
文献类型：
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作者：
K. Cao;C. Qian;Shihua Li;Juping Gu
由于处理输入时滞下的无穷维系统所面临的挑战，直接在离散时间域中研究了一类具有输入时滞的非线性连续系统的全局采样镇定问题.在采样周期和比例增益协同设计的框架下，构造了基于状态空间动态扩张的离散化状态反馈控制器和输出反馈控制器.在此补偿方案下，无论输入延迟是否小于采样周期，一类非线性系统都成功地实现了全局采样镇定。与无记忆采样控制器相比，不仅实现了大输入时滞下的采样镇定，而且进一步改善了闭环系统的暂态性能。在不同输入延迟和采样周期下的仿真结果表明了所得结果的有效性。
Global sampled‐data stabilization for a class of nonlinear continuous system with input delay has been investigated directly in the discrete‐time domain due to challenges confronted in dealing with infinite‐dimensional system under input delay. Memorized state feedback controllers and output feedback controllers based on dynamic extension of state space have been constructed within the framework of co‐design between sampling period and scaling gain. Upon this compensation scheme, global sampled‐data stabilization a class of nonlinear system has been successfully realized no matter the input delay is smaller than the sampling period or not. Compared with memory‐less sampled‐data controllers, not only sampled‐data stabilization under large input delay has been realized but also transient performance of closed‐loop system has been further improved. Simulation results under different input delays and sampling periods have illustrated the effectiveness of results obtained.