Results 231 to 240 of about 2,857,310 (288)

A theory of systems with unilateral constraints

Journal of Applied Mathematics and Mechanics, 1995
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Deryabin, M. V., Kozlov, V. V.
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Contact dynamics and relative motion estimation of non-cooperative target with unilateral contact constraint

, 2020
This paper investigates the contact dynamics and the relative motion estimation problems between the target and the end-effector during the post-capturing operation.
Yuchen She, Shuang Li, Jiaqian Hu
semanticscholar   +1 more source

POINTWISE BOUNDS FOR THE SOLUTION OF UNILATERAL CONSTRAINT PROBLEMS

The Quarterly Journal of Mechanics and Applied Mathematics, 1987
Upper and lower bounds to the solution at an interior point of a unilateral constraint problem for Laplace's equation in two dimensions are obtained and applied to the problem of a circular elastic membrane in contact with a rigid ellipsoid.
Collins, W. D., Harley, P. J., Sissaoui, H.   +2 more
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Continuous control law from unilateral constraints

2008 IEEE International Conference on Robotics and Automation, 2008
The control approaches based on tasks, and particularly based on a hierarchy of tasks, enable to build complex behaviors with some nice properties of robustness and portability. However it is difficult to consider directly unilateral constraints in such a framework.
Nicolas Mansard, Oussama Khatib
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Buckling under unilateral constraints

International Journal of Solids and Structures, 1979
Abstract The classic variational theory for eigenvalue problems is extended so as to define the Euler critical load of a unilaterally constrained beam. The Euler load is obtained by minimising a Rayleigh quotient on a convex subset of a Hilbert space. The variational formulation also provides a method of bounding the buckling load by comparison.
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Influence of unilateral constraint on machining dynamics of large overhang milling cutter

The International Journal of Advanced Manufacturing Technology, 2023
Fangting Meng, Qing-Hua Song, Yezhen Peng, Zhan-Qiang Liu   +3 more
semanticscholar   +1 more source

Relaxation for a Class of Control Systems with Unilateral Constraints

Acta Applicandae Mathematicae, 2019
The paper is concerned with a nonlinear feedback control system of type \[ \left\{\begin{array}{ll}-x' \in A(x(t))+f(t,x(t))u(t)\\ x(0)=x_0, \quad u(t) \in U(t,x(t))\end{array}\right. \] in a time interval \(T=[0,b]\). Here, \(A:D(A)\subset \mathbb{R}^N \to 2^{\mathbb{R}^N}\) is a maximal monotone mapping and the control constraint multifunction \(U:T ...
Nikolaos S. Papageorgiou, Calogero Vetro, Francesca Vetro   +2 more
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A Fully-Discrete Finite Element Scheme and Projection-Iteration Algorithm for a Dynamic Contact Problem with Multi-contact Zones and Unilateral Constraint

Journal of Scientific Computing, 2023
Dong-ling Cai, Jing-Yan Hu, Yi-Bin Xiao, Ping Zeng, Guan-Yu Zhou   +4 more
semanticscholar   +1 more source

Control of a simple mechanism subject to unilateral constraints

42nd IEEE International Conference on Decision and Control (IEEE Cat. No.03CH37475), 2004
This paper studies statically admissible configurations for a mechanism standing on a horizontal plane (under the action of gravity) subject to mere inequality constraints, which do not inhibit its detachment from the plane and, possibly, its overturn. For a simple case, a strategy to design an admissible control law that drives the mechanism from one ...
GALEANI, SERGIO, MENINI, LAURA, TORNAMBE', ANTONIO   +2 more
openaire   +3 more sources

An extra degree-of-freedom model for combined spacecraft attitude control with unilateral contact constraint

, 2019
This paper investigates the attitude control problem of a two-body combined spacecraft by considering the unilateral contact constraint on the active spacecraft's end-effector.
Yuchen She, Shuang Li
semanticscholar   +1 more source