Results 231 to 240 of about 252,925 (275)

Design of optimal feedback controllers for minimum eigenvalue sensitivity

Optimal Control Applications and Methods, 1984
AbstractAn iterative method for designing an optimal constant gain feedback controller for a linear system to achieve minimum eigenvalue sensitivity to parameter variations is presented. In addition to assigning eigenvalues to desired locations in the complex plane, one can also assign elements of eigenvectors by this method.
Qiu, Haiming, Gourishankar, V. G.
openaire   +4 more sources

Enhanced Maximum-Minimum Eigenvalue Based Spectrum Sensing

2019 International Conference on Information and Communication Technology Convergence (ICTC), 2019
The maximum eigenvalue captures the signal correlation well, and the minimum eigenvalue also captures the noise characteristics well, thus the spectrum sensing algorithm based on the maximum and minimum eigenvalue gets better detection performance.
Syed Sajjad Ali, Wenjing Zhao, Minglu Jin, Sang-Jo Yoo   +3 more
openaire   +1 more source

Maximum-Minimum Eigenvalue Detection for Cognitive Radio

2007 IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications, 2007
Sensing (signal detection) is a fundamental problem in cognitive radio. In this paper, a new method is proposed based on the eigenvalues of the covariance matrix of the received signal. It is shown that the ratio of the maximum eigenvalue to the minimum eigenvalue can be used to detect the signal existence.
Yonghong Zeng, Ying-Chang Liang
openaire   +1 more source

Pole assignment with minimum eigenvalue differential sensitivity

Proceedings of the Institution of Mechanical Engineers, Part I: Journal of Systems and Control Engineering, 1997
This paper introduces a set of mathematical formulae for calculating the eigenvalue differential sensitivities of the closed-loop state matrix with respect to the open-loop state matrix, input matrix and state feedback matrix. It provides a computational procedure for a robust pole assignment problem.
Lam, J, Tam, HK
openaire   +2 more sources

Minimum Eigenvalue Separation

1992
Abstract : For over one hundred years, the eigenvalue problem has been investigated by mathematicians, physicists, and engineers. Scientists explored the characterization, location, perturbation and computation of eigenvalues, to name a few topics. This thesis is devoted to the separation of eigenvalues. We will find the minimum gap between eigenvalues
Tzon-Tzer Lu, Beresford Parlett
openaire   +1 more source

The Minimum Ratio of Two Eigenvalues

SIAM Journal on Applied Mathematics, 1976
The first two eigenvalues, $\lambda _1 $ and $\lambda _2 $, of the problem $y'' + \lambda \phi ( x )y = 0$, $y( { \pm \frac{1}{2}} ) = 0$ are considered. The minimum of their ratio ${\lambda _2 / \lambda _1 }$ is sought for $\phi ( x )$ ranging over the class of piecewise continuous functions satisfying the inequalities $0 < a \leqslant \phi ( x ...
openaire   +1 more source

On the minimum eigenvalue gap for vibrating string

Journal of Mathematical Analysis and Applications, 2022
Consider a Sturm-Liouville problem with Dirichlet type boundary conditions (BCs). To speak more precise consider the differential equation \[ y'' +\lambda \rho(x) y=0 \] with BCs \[ y(0)=y(1)=0. \] As we know \(\rho(x)\) is called the density function and describes the mass distribution of a string.
openaire   +1 more source

Pole assignment with optimality and minimum eigenvalue sensitivity

Proceedings of the Institution of Electrical Engineers, 1975
A method is presented for designing a constant-gain feedback controller for assigning the closed-loop poles of a linear system to specified locations while minimising an objective functional which is a linear combination of a quadratic performance index and an eigenvalue sensitivity functional.
K. Ramar, V. Gourishankar
openaire   +1 more source

Minimum Eigenvalue Based 3-D AR Model Order Selection

IEEE/SP 13th Workshop on Statistical Signal Processing, 2005, 2005
This paper deals with the problem of three-dimensional autoregressive (3-D AR) model order estimation. Especially, we develop a practical algorithm to estimate the 3-D AR order (P1,P2,P3) corresponding to the quarter-space (QS) region of support. The proposed method is derived from the minimum description length (MDL) criterion and uses the minimum ...
B. Aksasse, Y. Stitou, Y. Berthoumieu, M. Najim   +3 more
openaire   +1 more source