Results 271 to 280 of about 803,494 (308)

Piecewise Polynomial Model Reduction Method for Nonlinear Systems in Time Domain

Asian Journal of Control, 2018
Abstract Model order reduction (MOR) of nonlinear systems draws great attention in the past several decades. This paper presents a new MOR method in time domain for nonlinear dynamical systems. The new algorithm is based on the combination of the Taylor series expansion for the state variable x
Zhi‐Yong Qiu, Yao‐Lin Jiang
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New Domain-Independent Methods for Reliability Improvement and Risk Reduction

2018 3rd International Conference on System Reliability and Safety (ICSRS), 2018
The common domain-specific approach to reliability improvement and risk reduction created the false perception that effective risk reduction can be delivered successfully solely by using methods offered by the specific domain. This paper argues that reliability improvement and risk reduction is underpinned by general principles whose knowledge helps to
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Sub-domain reduction method in non-matched interface problems

Journal of Mechanical Science and Technology, 2008
A sub-domain scheme combined with a reduced system is proposed for non-matched interface problems. A twolevel condensation scheme (TLCS) is employed for the selection of primary degrees of freedom of each sub-domain. The degrees of freedom of each domain are divided into primary, secondary and interface degrees of freedom.
Hyungi Kim, Maenghyo Cho
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Blocking artifact reduction method based on non-iterative POCS in the DCT domain

IEEE International Conference on Image Processing 2005, 2005
The post-processing method based on projections onto convex sets (POCS) has demonstrated good performance for blocking artifact reduction. However the iterative procedure in POCS requires a lot of computations, and would be infeasible for practical post-processing applications with real-time constraints.
Changboon Yim, Nam Ik Cho
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The Error Bound of Timing Domain in Model Order Reduction by Krylov Subspace Methods

Journal of Circuits, Systems and Computers, 2018
In this paper, we present four different error bound estimates of timing domain in model order reduction by Krylov subspace methods. Firstly, we give integral method based on the impulse response in time domain. The second method is to use small sample statistical method to estimate the error bound based on an error system.
Xinsheng Wang, Mingyan Yu
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Time-domain impulse injection method for crest factor reduction of OFDM signals

2012 IEEE Statistical Signal Processing Workshop (SSP), 2012
This paper treats the problem of crest factor reduction (CFR) for orthogonal frequency division multiplexing (OFDM) signals. The proposed impulse injection method reduces the crest factor of the time-domain signal by injecting judiciously designed complex-valued impulse in selected discrete-time locations while keeping both the in-band error vector ...
Zhenhua Yu 0003, Robert J. Baxley, G. Tong Zhou   +2 more
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Order Reduction of Linear System Models with a Time-Frequency Domain Method

Journal of the Franklin Institute, 1986
A mixed method of model-order reduction is introduced, which is based on the linear state-space representation of the original system. The derivation of its transfer function matrix expression uses the Leverrier algorithm and the application of well known partial-fraction expansion techniques together with the concept of dominant eigenvalues on the ...
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Reduction of the staircasing error in the single-domain pseudospectral frequency-domain method for analysis of photonic crystals

Journal of Optics A: Pure and Applied Optics, 2009
An improved Fourier pseudospectral frequency-domain (PSFD) method is proposed for the analysis of two-dimensional photonic crystals. Similar to the conventional Fourier PSFD, this method also uses trigonometric basis functions to expand various components of the pseudoperiodic electromagnetic field.
S Sargheiny, M Shahabadi
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A METHOD FOR BIAS REDUCTION IN TIME DOMAIN LEAST SQUARES PARAMETER ESTIMATION

IFAC Proceedings Volumes, 2007
This paper examines the issue of bias that arises when applying least squares identification to continuous-time models of resonant systems. We propose a simple method to reduce the impact of this bias by pre-processing the data. This new method requires no knowledge of the noise colouring.
James S. Welsh, Graham C. Goodwin, Hugues Garnier   +2 more
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Clipping and time domain statistical method for PAPR reduction in OFDM system

2010 9th International Conference on Environment and Electrical Engineering, 2010
The large peak to average power ratio (PAPR) is widely believed as one of the most critical problem for OFDM systems and a lot of methods have been proposed to reduce PAPR. A new PAPR reduction method for the OFDM system by combining both clipping method and time domain statistical method has been proposed and investigated.
Aeizaal Azman Abdul Wahab, Mohd. Fadzil Ain   +1 more
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