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arXiv 2409.02473eess.SYcs.SY
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基于可变幂次曲面误差函数反步法的非下三角非线性系统动态面控制

A Variable Power Surface Error Function backstepping based Dynamic Surface Control of Non-Lower Triangular Nonlinear Systems

Abdulrazaq Nafiu Abubakar, Ali Nasir, Md Muzakkir Quamar

AI总结:

针对非下三角非线性系统跟踪控制问题,提出融合可变幂次曲面误差函数、反步法与动态面控制的方案,实现稳态误差任意小并验证有效性。

摘要:

针对一类非下三角非线性系统的跟踪控制中的误差减小问题,提出了一种控制设计方法,该方法结合了可变幂次曲面误差函数(VPSEF)、反步法和动态面控制技术。在设计的每一步中,都会获得一个曲面误差,VPSEF技术根据其幅值大小决定所使用的曲面误差。因此,基于反步法设计的虚拟控制律和实际控制律用于镇定相应的子系统。为了解决循环结构问题,在递归设计的每个中间阶段使用一阶低通滤波器来处理虚拟控制信号。闭环系统的稳定性分析表明,所有信号均具有半全局一致最终有界性。此外,通过适当利用VPSEF技术的控制输入切换策略,可以确保稳态跟踪误差收敛到零的任意小邻域内。所提概念的有效性已通过两个不同的仿真演示进行了验证。

英文摘要:

A control design for error reduction in the tracking control for a class of non-lower triangular nonlinear systems is presented by combining techniques of Variable Power Surface Error Function (VPSEF), backstepping, and dynamic surface control. At each step of design, a surface error is obtained, and based on its magnitude, the VPSEF technique decides the surface error to be used. Thus, the backstepping-based virtual and actual control law is designed to stabilize the corresponding subsystem. To address the issue of circular structure, a first-order low-pass filter is used to handle the virtual control signal at each intermediate stage of the recursive design. The stability analysis of the closed-loop system demonstrates that all signals indicate semi-global uniform ultimate boundedness. Moreover, by using the switching strategy of the control input using the VPSEF technique suitably, it is possible to ensure that the steady-state tracking error converges to a neighborhood of zero with an arbitrarily very small size. The effectiveness of the proposed concept has been verified using two different simulated demonstrations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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