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Sliding mode boundary control of a vibrating string under time-varying distributed disturbance

机译:时变分布式干扰下振动串的滑模边界控制

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This paper is concerned with sliding-mode boundary control (SMBC) of a vibrating string system under parameter variation. The string is excited by time-varying distributed disturbance. Dynamics of the vibrating string are described by two types of differential equations, namely: (a) non-homogenous hyperbolic partial differential equation (PDE) and (b) ordinary differential equations (ODEs). In the proposed scheme, the perturbations of the vibrating string are damped in the presence of system parameter variation. The boundary control law based on the original infinite dimensional model is applied at the free end of the string. Robustness of this scheme is validated through different lengths of the string system. The suggested control system is proven to be exponentially converging to zero by using Lyapunov direct method. Simulation results show that the proposed design is valid for attenuating the vibrations effectively.
机译:本文涉及参数变化下振动弦系统的滑模边界控制(SMBC)。这些字符串通过时变分布式干扰激发。振动串的动态由两种类型的微分方程描述,即:(a)非均相双曲部分微分方程(PDE)和(B)常微分方程(杂物)。在所提出的方案中,在存在系统参数变化的情况下阻尼振动串的扰动。基于原始无限尺寸模型的边界控制定律在串的自由端应用。通过不同长度的字符串系统验证该方案的鲁棒性。通过使用Lyapunov Direct方法,证明建议的控制系统被指数地将其呈现为零。仿真结果表明,该设计有效,可有效地减弱振动。

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