Results 251 to 260 of about 17,447,143 (292)

Regulation of a system with variable structure

1981 20th IEEE Conference on Decision and Control including the Symposium on Adaptive Processes, 1981
The linearized process dynamics of the boiler in a solar-powered central receiver change abruptly when clouds pass over the heliostats which direct the sun's rays toward it. The steam temperature regulator used to control exit steam conditions must control a system with variable structure and discontinuous state trajectories.
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Variable Structure Control of Sampled-Data Systems

IFAC Proceedings Volumes, 1997
Abstract For a continuous-time systenl, a sliding sector is designed as a subspace of system state space, where some norm of the system state decreases. The continuoustime VSS control law is designed to Inove the system state from the outside to the inside of the PR-sliding sector while the norn1 keeps decreasing. In the paper.
Katsuhisa Furuta, Yaodong Pan
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On a Class of Variable-Structure Systems

1974
The purpose of this paper is to investigate the optimal control of a class of discrete, time-invariant, variable-structure systems. Both deterministic and stochastic problems are considered for unbounded control and the cost functional quadratic in state. Solutions are obtained in closed-form.
Surender K. Gupta, Kuduvally N. Swamy, Tzyh-Jong Tarn, John Zaborszky   +3 more
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Variability of sif and cod of stochastic structural systems

Computers & Structures, 1992
Stochastic structural systems having a stochastic distribution of material properties and stochastic external loadings in space are analysed when a crack of deterministic size is present. The energy release rate is derived using the method of virtual crack extension.
Sankar, TS, Ramu, Anantha S, Ganesan, R
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Fuzzy smoothing algorithms for variable structure systems

IEEE Transactions on Fuzzy Systems, 1994
A variable structure system (VSS) is a control system implementing different control laws in different regions of the state space divided by a set of boundary manifolds. The control input switches from one control law to another when the state crosses the boundary manifolds.
Yean-Ren Hwang, Masayoshi Tomizuka
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Variable structure control of a magnetic levitation system

Proceedings of the 2001 American Control Conference. (Cat. No.01CH37148), 2001
Presents a variable structure control (VSC) design procedure for robust stabilization and disturbance rejection of a magnetic levitation system. The procedure is based on a method called the reaching law method complemented by a sliding mode equivalence technique.
Ikbal M. M. Hassan, Abdelfatah M. Mohamed   +1 more
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DECENTRALIZED VARIABLE STRUCTURE CONTROL OF COMPLEX SYSTEMS

IFAC Proceedings Volumes, 1994
Abstract The paper considers the problem of stabilizing large scale dynamic systems (LSS) via decentralized controllers based on Variable Structure Systems (VSS) and using the principle of dominant subsystems. The principle and applications for LSS are described and simulation test results on a two- machines power system with nonlinear model are ...
V. Veselý, D. Kalaš
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On the uncertain variable structure systems with bounded controllers

Journal of the Franklin Institute, 2003
Under suitable assumptions, the problem of estimating the asymptotic stability region (ASR) of uncertain variable structure systems with bounded controllers is studied. It is proved that there exists a sliding surface parameter matrix iff some linear matrix inequalities (LMI) hold true.
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Slow periodic motions in variable structure systems

International Journal of Systems Science, 2001
Singularly perturbed relay control systems (SPRCS) which have stable periodic motion in reduced systems are studied. The slow motions integral manifold of such systems consists of parts which correspond to different values of control and the solutions of SPRCS contain the jumps from one part of the slow manifold to the other.
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State estimation of a class of stochastic variable structure systems

Proceedings of the 41st IEEE Conference on Decision and Control, 2002., 2003
In many engineering applications the process to be controlled or to be filtered can be modeled as a variable structure system, i.e. a system whose dynamics switches within a finite set of behaviors. Different approaches to the filtering problem can be followed, according to the nature of the switching process.
GERMANI, Alfredo, MANES, COSTANZO, PALUMBO P.   +2 more
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