Results 101 to 110 of about 10,383,907 (288)

Codimension in planar polynomial differential systems

Electronic Journal of Differential Equations
The topological classification of large families of polynomial differential systems remains an extremely difficult problem. Even for the simplest nonlinear case, the quadratic systems, this problem is still open.
Joan C. Artes, Jaume Llibre, Dana Schlomiuk, Nicolae Vulpe   +3 more
doaj  

The Optimal Linear Quadratic Feedback State Regulator Problem for Index One Descriptor Systems [PDF]

In this note we present both necessary and sufficient conditions for the existence of a linear static state feedback controller if the system is described by an index one descriptor system. A priori no definiteness restrictions are made w.r.t.
Salmah, Y., Wijayanti, I.E., Engwerda, J.C.   +2 more
core  

Regularity of Linear Systems of Differential Equations on the Axes and Pencils of Quadratic Forms

Communications in Advanced Mathematical Sciences, 2019
It is considered linear systems of differential equations and investigated questions of regularity of these systems. To explore the regularity it is comfortable to use quadratic form whose derivative with respect to the adjoint system is positive ...
Nataliya Stepanenko, Viktor Kulyk, Ganna Kulyk   +2 more
doaj   +1 more source

A Constraint‐Based Analytical Framework for Design‐Space Analysis and Material Screening of Tubular Multilayer Dielectric Elastomer Pumps for Extracorporeal Circulatory Applications

Advanced Materials Technologies, EarlyView.
A constraint‐based analytical framework maps the coupled effects of material properties, structural parameters, and operating conditions in tubular dielectric elastomer pumps for extracorporeal circulatory applications. The approach defines performance boundaries through mechanical, electrical, and hydraulic constraints and identifies feasible design ...
Yan Zhang, Amine Benouhiba, Yoan Civet, Yves Perriard   +3 more
wiley   +1 more source

Instable Trivial Solution of Autonomous Differential Systems with Quadratic Right-Hand Sides in a Cone

Abstract and Applied Analysis, 2011
The present investigation deals with global instability of a general n-dimensional system of ordinary differential equations with quadratic right-hand sides.
D. Ya. Khusainov, J. Diblík, Z. Svoboda, Z. Šmarda   +3 more
doaj   +1 more source

Nonlocomotory Robotic Strategies for Dynamic Rotation Control in Terrestrial Robots: A Review

Advanced Robotics Research, EarlyView.
Terrestrial robots increasingly require rapid body rotation to maintain stability and agility in complex environments. This review shows nonlocomotory rotational control strategies that operate without ground contact, including reaction wheels, tails, bars, limbs, and thrusters.
Y. Liang, J. An, X. Zheng, D. Wang, S. Wang, X. Wang, P. Zhu, J. Pei, S. Li, J. Paripurana, Y. Han, Z. Tang, X. Gan, Q. He, X. Ma   +14 more
wiley   +1 more source

Autonomous linear lossless systems

, 2008
We define a lossless autonomous system as one having a quadratic differential form associated with it called an energy function, which is positive and which is conserved.
Rao, Shodhan, Paolo Rapisarda, Shodhan Rao, Rapisarda, Paolo   +3 more
core   +2 more sources

Uniqueness Conditions for the Infinite-Planning Horizon Open-Loop Linear Quadratic Differential Game [PDF]

In this note we consider the open-loop Nash linear quadratic differential game with an infinite planning horizon.The performance function is assumed to be indefinite and the underlying system affine.We derive both necessary and sufficient conditions ...
Engwerda, J.C.
core  

State maps from bilinear differential forms [PDF]

, 2010
State equations need often to be constructed from a higher-order model of a system, resulting for example from the interconnection of subsystems, or from system identification procedures.
van der Schaft, Arjan, Schaft, Arjan J. van der, Rapisarda, Paolo,, Schaft, Arjan J. van der,, Schaft, Arjan J. van der; id_orcid, Rapisarda, Paolo   +5 more
core   +2 more sources

Gait Analysis of Pak Biawak: A Necrobot Lizard Built using the Skeleton of an Asian Water Monitor (Varanus Salvator)

Advanced Robotics Research, EarlyView.
Pak Biawak, a necrobot, embodies an unusual fusion of biology and robotics. Designed to repurpose natural structures after death, it challenges conventional boundaries between nature and engineering. Its movements are precise yet unsettling, raising questions about sustainability, ethics, and the untapped potential of biointegrated machines.
Leo Foulds, Donan Satria Yudha, Parvez Alam   +2 more
wiley   +1 more source