Results 261 to 270 of about 158,314 (299)
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On the relationship between the spectral radius and stability radius for discrete systems
IEEE Transactions on Automatic Control, 1990The main result is summarized in the following theorem: For a Schur matrix A (i.e. \(r(A)
exaly +2 more sources
SIAM Journal on Control and Optimization, 2000 In this paper the theory of evolution semigroups is developed and used to provide a framework to study the stability of general linear control systems. These include autonomous and nonautonomous systems modeled with unbounded state-space operators acting
Stephen Clark +2 more
exaly +2 more sources
Maximizing the stability radius: an LMI approach
Proceedings of the 2001 American Control Conference. (Cat. No.01CH37148), 2001Given a stabilizable linear system Ex/spl dot/ = Ax + Bu with sE - A regular, we analyze the stability robustness of the closed-loop system (E + BK) = (A + BF)x + v, obtained by proportional and derivative (PD) state feedback u = Fx Kx/spl dot/ + v. Our goal is to maximize the stability radius of the closed-loop system matrix s(E + BK) - (A + BF) over ...
Cristian Oari +2 more
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Stability assessment of distal radius fractures
Injury, 1989A total of 112 consecutive cases of fractures of the distal radius managed conservatively were graded according to radiological criteria using the first radiograph. These criteria, as well as age over 60 years, were considered as gravity factors. A strong correlation was found between these criteria and the risk of secondary displacement, despite a ...
Lafontaine, Murielle +2 more
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1995
Abstract In applications, Ω is considered a “good” set, and a matrix X having all its eigenvalues in O is considered a “good” matrix. For example, if n is the open left half-plane, then a “good” matrix means that the matrix is c-stable.
Peter Lancaster, Leiba Rodman
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Abstract In applications, Ω is considered a “good” set, and a matrix X having all its eigenvalues in O is considered a “good” matrix. For example, if n is the open left half-plane, then a “good” matrix means that the matrix is c-stable.
Peter Lancaster, Leiba Rodman
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On the Real Structured Stability Radius
IFAC Proceedings Volumes, 1993Abstract This paper presents a formula for the real structured stability radius with respect to an arbitrary stability region in the complex plane. This formula can be easily computed.
L. Qiu +5 more
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Stabilized bubbles in the body: pressure-radius relationships and the limits to stabilization
Journal of Applied Physiology, 1997Van Liew, Hugh D., and Soumya Raychaudhuri. Stabilized bubbles in the body: pressure-radius relationships and the limits to stabilization. J. Appl. Physiol.82(6): 2045–2053, 1997.—We previously outlined the fundamental principles that govern behavior of stabilized bubbles, such as the microbubbles being put forward as ultrasound contrast agents.
H D, Van Liew, S, Raychaudhuri
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On the Real Stability Radius for Some Classes of Matrices
2021We continue investigations on the Frobenius norm real stability radius computation started in the previous publication by the authors (LNCS, vol. 12291 (2020)). With the use of the elimination of variables procedure we reduce the problem to the univariate equation solving. The structure of the destabilizing perturbation matrix is also discussed as well
Elizaveta Kalinina, Alexei Uteshev
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The influence of a single-radius-design on the knee stability
Technology and Health Care, 2012Prostheses with single radius (SR) design were supposed to be as good as the physiological kinematic and stability of the knee. This in-vitro biomechanical study compared SR to a multiple radius (MR) design on the one hand and seven left human knee specimens were used. The SR and MR knee prosthesis where implanted with a navigation system.
M, Ezechieli +6 more
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Biomechanical Evaluation of Distal Radius Fracture Stability
Journal of Orthopaedic Trauma, 1998(a) To determine the radiographic correlation between an artificially created dorsal comminution (via a wedge osteotomy) and dorsal tilt (clinical instability) and (b) to determine the efficacy of cast immobilization in maintaining reduction of the simulated fracture pattern as a predictor of successful treatment in the clinical setting.Biomechanical ...
M G, Zmurko, W A, Eglseder, S M, Belkoff
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