Results 41 to 50 of about 1,692 (206)

Riccati techniques and oscillation for self-adjoint matrix Hamiltonian systems

open access: yesComputers & Mathematics with Applications, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Qi-Ru Wang   +2 more
openaire   +2 more sources

State-dependent Kalman filters for robust engine control [PDF]

open access: yes, 2006
Vehicle emissions variations impose significant challenges to the automotive industry. In these simulation studies, nonlinear estimation techniques based on state-dependent and extended Kalman filtering are developed for spark ignition engines to enhance
Dutka, A.   +8 more
core   +1 more source

The development of the deterministic nonlinear PDEs in particle physics to stochastic case

open access: yesResults in Physics, 2018
In the present work, accuracy method called, Riccati-Bernoulli Sub-ODE technique is used for solving the deterministic and stochastic case of the Phi-4 equation and the nonlinear Foam Drainage equation.
Mahmoud A.E. Abdelrahman, M.A. Sohaly
doaj   +1 more source

Riccati Techniques and Approximation for a Second-Order Poincaré Difference Equation

open access: yesJournal of Mathematical Analysis and Applications, 1998
Approximation results are obtained via a discrete analog of Riccati method for second-order selfadjoint difference equations and applied to the following second-order Poincaré difference equation \[ z_{n+2}-t(2+b_n)z_{n+1}+t^2 (1+c_n)z_n=0,\quad t\neq 0 \] (\(b_n,c_n\) are real numbers) whose unperturbed equation has a double characteristic root.
Chen, Shaozhu, Wu, Chunqing
openaire   +1 more source

Sine-cosine wavelet operational matrix of fractional order integration and its applications in solving the fractional order Riccati differential equations

open access: yesAdvances in Difference Equations, 2017
In this paper, the sine-cosine wavelet method is presented for solving Riccati differential equations. The sine-cosine wavelet operational matrix of fractional integration is derived and utilized to transform the equations to system of algebraic ...
Yanxin Wang, Tianhe Yin, Li Zhu
doaj   +1 more source

Riccati techniques and variational principles in oscillation theory for linear systems [PDF]

open access: yesTransactions of the American Mathematical Society, 1987
We consider the seond order differential system ( 1 ) Y +
Butler, G. J.   +2 more
openaire   +2 more sources

A subspace shift technique for nonsymmetric algebraic Riccati equations associated with an M‐matrix [PDF]

open access: yesNumerical Linear Algebra with Applications, 2012
SUMMARYThe worst situation in computing the minimal nonnegative solution of a nonsymmetric algebraic Riccati equation associated with an M‐matrix occurs when the corresponding linearizing matrix has two very small eigenvalues, one with positive and one with negative real part.
Bruno Iannazzo   +1 more
openaire   +2 more sources

Computation of Inner-Outer Factorizations of Rational Matrices

open access: yes, 1997
In this paper we propose a new numerically reliable computational approach to determine the inner-outer factorization of a rational transfer matrix G of a linear descriptor system.
A. Varga, Andras Varga, Varga, A.
core   +1 more source

State dependent NGMV control of delayed piecewise affine systems [PDF]

open access: yes, 2009
A Nonlinear Generalized Minimum Variance (NGMV) control algorithm is introduced for the control of delayed piecewise affine (PWA) systems which are an important subclass of hybrid systems.
Grimble, M.J.   +5 more
core   +1 more source

Oscillation criteria for perturbed half-linear differential equations

open access: yesElectronic Journal of Qualitative Theory of Differential Equations
Oscillatory properties of perturbed half-linear differential equations are investigated. We make use of the modified Riccati technique. A certain linear differential equation associated with the modified Riccati equation plays an important part. Improved
Manabu Naito
doaj   +1 more source

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