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Interval finite element method for complex eigenvalues of closed-loop systems with uncertain parameters

机译:参数不确定的闭环系统复特征值的区间有限元方法

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摘要

In practical engineering, the uncertain concept plays an important role in the control problems of the vibration structures. In this paper, based on matrix perturbation theory and interval finite element method, the closed-loop vibration control system with uncertain parameters is discussed. A new method is presented to develop an algorithm to estimate the upper and lower bounds of the real parts and imaginary parts of the complex eigenvalues of vibration control systems. The results are derived in terms of physical parameters. The present method is implemented for a vibration control system of the frame structure. To show the validity and effectiveness, we compare the numerical results obtained by the present method with those obtained by the classical random perturbation.
机译:在实际工程中,不确定性概念在振动结构的控制问题中起着重要作用。本文基于矩阵摄动理论和区间有限元方法,研究了参数不确定的闭环振动控制系统。提出了一种新的方法来开发估计振动控制系统复特征值实部和虚部上下边界的算法。结果是根据物理参数得出的。本方法用于框架结构的振动控制系统。为了显示有效性和有效性,我们将通过本方法获得的数值结果与通过经典随机扰动获得的数值结果进行比较。

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