A Chebyshev interval method for nonlinear dynamic systems under uncertainty
A Chebyshev interval method for nonlinear dynamic systems under uncertainty
复制标题
不确定性下非线性动力系统的切比雪夫区间法
DOI:
10.1016/j.apm.2012.09.073
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发表时间:
2013-03
影响因子:
5
通讯作者:
Luo, Zhen
中科院分区:
文献类型:
--
作者:
Wu, Jinglai;Zhang, Yunqing;Chen, Liping;Luo, Zhen
This paper proposes a new interval analysis method for the dynamic response of nonlinear systems with uncertain-but-bounded parameters using Chebyshev polynomial series. Interval model can be used to describe nonlinear dynamic systems under uncertainty with low-order Taylor series expansions. However, the Taylor series-based interval method can only suit problems with small uncertain levels. To account for larger uncertain levels, this study introduces Chebyshev series expansions into interval model to develop a new uncertain method for dynamic nonlinear systems. In contrast to the Taylor series, the Chebyshev series can offer a higher numerical accuracy in the approximation of solutions. The Chebyshev inclusion function is developed to control the overestimation in interval computations, based on the truncated Chevbyshev series expansion. The Mehler integral is used to calculate the coefficients of Chebyshev polynomials. With the proposed Chebyshev approximation, the set of ordinary differential equations (ODEs) with interval parameters can be transformed to a new set of ODEs with deterministic parameters, to which many numerical solvers for ODEs can be directly applied. Two numerical examples are applied to demonstrate the effectiveness of the proposed method, in particular its ability to effectively control the overestimation as a non-intrusive method.
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影响因子:
5
作者:
Z. Qiu;Juxi Hu
通讯作者:
Z. Qiu;Juxi Hu
影响因子:
0.6
作者:
Dirk Hofmann
通讯作者:
Dirk Hofmann
DOI:
10.4028/www.scientific.net/amm.152-154.1555
发表时间:
2012-01
期刊:
Applied Mechanics and Materials
影响因子:
--
作者:
Jinglai Wu;Y. Zhang
通讯作者:
Jinglai Wu;Y. Zhang
影响因子:
4.4
作者:
A. Buras;M. Jamin;M. Lautenbacher
通讯作者:
A. Buras;M. Jamin;M. Lautenbacher
影响因子:
--
作者:
K. Makino;M. Berz
通讯作者:
K. Makino;M. Berz