Results 31 to 40 of about 19,164 (129)

Solving for Blameless and Optimal Control Under Prioritized Safety Constraints

Optimal Control Applications and Methods, EarlyView.
Summary of the proposed method for solving for blameless and optimal control sequences. ABSTRACT In many safety‐critical optimal control problems, users may request multiple safety constraints that are jointly infeasible due to external factors such as subsystem failures, unexpected disturbances, or fuel limitations.
Natalia Pavlasek, Behçet Açıkmeşe, Meeko Oishi, Claus Danielson   +3 more
wiley   +1 more source

Output Feedback Design for Parameter Varying Systems Subject to Persistent Disturbances and Control Rate Constraints

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT This paper develops a framework for designing output feedback controllers for constrained linear parameter‐varying systems that experience persistent disturbances. We specifically propose an incremental parameter‐varying output feedback control law to address control rate constraints, as well as state and control amplitude constraints.
Jackson G. Ernesto, Eugênio B. Castelan, Walter Lucia   +2 more
wiley   +1 more source

Periodic Scenario Trees: A Novel Framework for Robust Periodic Invariance and Stabilization of Constrained Uncertain Linear Systems

International Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT This work proposes a new framework for stabilizing uncertain linear systems and for determining robust periodic invariant sets and their associated control laws for constrained uncertain linear systems. Necessary and sufficient conditions for stabilizability by periodic controllers are stated and proven using finite step Lyapunov functions for
Yehia Abdelsalam, Sankaranarayanan Subramanian, Sebastian Engell   +2 more
wiley   +1 more source

Combinatorial Space Tiling [PDF]

, 2010
The present article studies combinatorial tilings of Euclidean or spherical spaces by polytopes, serving two main purposes: first, to survey some of the main developments in combinatorial space tiling; and second, to highlight some new and some old open ...
Schulte, Egon
core  

UBVH: Unified Bounding Volume and Scene Geometry Representation for Ray Tracing

Computer Graphics Forum, EarlyView.
Abstract Bounding volume hierarchies (BVHs) are currently the most common data structure used to accelerate ray tracing. The existing BVH methods distinguish between the bounding volume representation associated with the interior BVH nodes and the scene geometry representation associated with leaf nodes.
M. Káčerik, J. Bittner
wiley   +1 more source

Faces of Birkhoff Polytopes [PDF]

, 2013
The Birkhoff polytope B(n) is the convex hull of all (n x n) permutation matrices, i.e., matrices where precisely one entry in each row and column is one, and zeros at all other places.
Paffenholz, Andreas
core  

On positivity of Ehrhart polynomials

, 2018
Ehrhart discovered that the function that counts the number of lattice points in dilations of an integral polytope is a polynomial. We call the coefficients of this polynomial Ehrhart coefficients, and say a polytope is Ehrhart positive if all Ehrhart ...
Alexander Postnikov, Benjamin Braun, Christian Bey, Clara S. Chan, E Ehrhart, Etienne Rassart, F Castillo, Federico Ardila, Federico Castillo, Federico Castillo, FR Rodriguez-Villegas, Fu Liu, Fu Liu, Fu Liu, Fu Liu, Günter M. Ziegler, Harm Derksen, Heinke Conrads, I. G. MacDonald, I. Pak, J. Haglund, Jaron Treutlein, Jeffrey R. Schmidt, Karola Mészáros, Karola Mészáros, Karola Mészáros, Lucia Moura, Matthias Beck, Matthias Beck, N. Berline, P. McMullen, P.R. Scott, Persi Diaconis, Petter Branden, R. King, Richard P Stanley, RICHARD P. STANLEY, Richard P. Stanley, Richard P. Stanley, Richard P. Stanley, Robert Steinberg, Sam Payne, Sylvain E. Cappell, T Hibi, T. Hibi, Takayuki Hibi, Takayuki Hibi, Takayuki Hibi, Welleda Baldoni   +48 more
core   +1 more source

Data‐Based Refinement of Parametric Uncertainty Descriptions

International Journal of Robust and Nonlinear Control, Volume 36, Issue 6, Page 3210-3228, April 2026.
ABSTRACT We consider dynamical systems with a linear fractional representation involving parametric uncertainties which are either constant or varying with time. Given a finite‐horizon input‐state or input‐output trajectory of such a system, we propose a numerical scheme which iteratively improves the available knowledge about the involved constant ...
Tobias Holicki, Carsten W. Scherer
wiley   +1 more source

Minimum energy configurations for interacting dipoles in simplex, orthoplex and hypercube crystals

Results in Physics
Polytope structures composed by classical dipoles living on their vertices in Rd present a unique opportunity to venture beyond the conventional paradigm of crystalline many-body physics, as well as to discuss the energetics of the global minimum energy ...
Orion Ciftja, Josep Batle, Mohamed Ahmed Hafez   +2 more
doaj   +1 more source

Unimodality Problems in Ehrhart Theory

, 2017
Ehrhart theory is the study of sequences recording the number of integer points in non-negative integral dilates of rational polytopes. For a given lattice polytope, this sequence is encoded in a finite vector called the Ehrhart $h^*$-vector. Ehrhart $h^*
A. Stapledon, Adam McCabe, Akihiro Higashitani, Alexander Postnikov, C. Bey, C. Haase, Carla D. Savage, Carla D. Savage, Christos A. Athanasiadis, E. Ehrhart, E. Katz, Federico Ardila, Francesco Brenti, H. Ohsugi, Hidefumi Ohsugi, I.M. Gelfand, Jan Schepers, Jeffrey C. Lagarias, Jesús A. De Loera, Jesús A. De Loera, Joseph Gubeladze, M. Beck, M. Hochster, M. Kreuzer, M. Mustaţǎ, Maria Chudnovsky, Matthias Beck, Matthias Beck, Matthias Beck, Matthias Beck, Mireille Bousquet-Mélou, Mordechai Katzman, Neil L. White, P. McMullen, R.P. Stanley, RICHARD P. STANLEY, Richard P. Stanley, S. Payne, T. Hibi, T. Hibi, Tadahito Harima, Takayuki Hibi, Takayuki Hibi, Thomas Lam, V.V. Batyrev, Winfried Bruns   +45 more
core   +1 more source