Proceedings of the American Control Conference
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Adaptive backstepping control design for MIMO plants using factorization
Proceedings of the American Control Conference - Tập 6 - Trang 4601-4606 vol.6 - 2002
The generalization of the adaptive backstepping control for linear MIMO plants
made a restrictive assumption about the high frequency gain B/sub m/: a matrix
S/sub m/ must be known such that B/sub m/S/sub m/=(B/sub m/S/sub m/)/sup T/>0.
In this paper, using the SDU factorization of B/sub m/, where S is symmetric
positive definite, D is diagonal, and U is unity upper triangular, we eliminate
that r...
#Programmable control #Adaptive control #Backstepping #Control design #MIMO #Frequency #Symmetric matrices #Mechanical engineering #Linear systems #Control systems
Motion control of precision positioning systems using adaptive compensation
Proceedings of the American Control Conference - Tập 6 - Trang 4589-4594 vol.6 - 2002
In this paper, an adaptive motion control method is proposed for high-accuracy
positioning systems with nonlinear friction and parameter uncertainties. Based
on the control input redesign framework for disturbance compensation, a unified
control structure of an adaptive compensator and feedback motion controller is
designed. Adaptive control which can reduce the uncertainties of system
parameters ...
#Motion control #Adaptive systems #Programmable control #Adaptive control #Feedback #Error correction #Friction #Uncertain systems #Uncertainty #Stability analysis
WPT-SVMs based approach for fault detection of valves in reciprocating pumps
Proceedings of the American Control Conference - Tập 6 - Trang 4566-4570 vol.6 - 2002
This paper presents a novel approach for fault detection of valves in
three-cylinder reciprocating pumps. Since the vibration signals collected from
pumps apparently show the existence of non-stationary signals and the
interference of neighboring valves, the wavelet packet transform (WPT) is
introduced as a preprocessing means of extracting time-frequency information
from vibration signals to obta...
#Fault detection #Valves #Fault diagnosis #Pumps #Interference #Wavelet packets #Wavelet transforms #Data mining #Time frequency analysis #Support vector machines
Sliding mode observer based fault detection and isolation in descriptor systems
Proceedings of the American Control Conference - Tập 6 - Trang 4543-4548 vol.6 - 2002
This paper considers the application of sliding mode observer to the problem of
fault detection and isolation for descriptor system with input fault and
measurement fault. In detecting and isolating the faults, we consider two cases
where there exists only an input fault, and a measurement fault without the
input fault in the system respectively. For each case, we propose an approach
for designing...
#Fault detection #Stability #Observers #Lyapunov method #Hardware #Redundancy #Isolation technology #Automatic control #Voting #Costs
Hybrid state plant model constraints for design of control systems for discrete part manufacture resource distribution
Proceedings of the American Control Conference - Tập 6 - Trang 4449-4454 vol.6 - 2002
Material- and product transformations of discrete part manufacture are performed
through sequences of continuous processes. The sequences of the transformations
are in most humanly operated manufacture today determined partly by conscious
planning partly by non conscious planning. Basis of the planning is
deterministic transformation durations. This paper establishes a rational system
framework up...
#Control system synthesis #Virtual manufacturing #Robotic assembly #Transportation #Manufacturing systems #Resource management #Robots #Robotics and automation #Stochastic processes #Bars
Constrained controllability of semilinear systems
Proceedings of the American Control Conference - Tập 6 - Trang 4395-4400 vol.6 - 2002
In the paper infinite-dimensional dynamical control systems described by
semilinear abstract differential equations are considered. Using a generalized
open mapping theorem, sufficient conditions for constrained exact local
controllability are formulated and proved. It is generally assumed that the
values of admissible controls are in a convex and closed cone with vertex at
zero. Constrained exact...
#Controllability #Control systems #Integral equations #Nonlinear equations #Differential equations
Parametrically robust control-integrated design of nonlinear systems
Proceedings of the American Control Conference - Tập 6 - Trang 4321-4326 vol.6 - 2002
An approach is presented which allows us to incorporate constraints on the
system dynamics into the optimization based design of nonlinear systems. In this
approach, boundaries in the parameter space of the nonlinear system are taken
into account, at which desired dynamics characteristics of the system are lost.
These boundaries can be defined, for example, by a critical value of the real
part of ...
#Robust control #Nonlinear control systems #Control systems #Nonlinear systems #Nonlinear dynamical systems #Design optimization #Eigenvalues and eigenfunctions #Constraint optimization #Stress #Robustness
Convex methods in actuator placement
Proceedings of the American Control Conference - Tập 6 - Trang 4309-4314 vol.6 - 2002
A new formulation of the actuator placement problem is presented. This
formulation considers capital cost in the objective function and highlights the
importance of magnitude limits on both input and output signals through variance
bounding constraints on each. Thus, the proposed optimization problem is aimed
at finding the set of minimum cost actuator arrays such that there exists a
linear feedba...
#Chemical technology #Cost function #Feedback #Automatic control #Chemical engineering #Hydraulic actuators #Design methodology #Inductors #Distributed parameter systems #Instruments
Index of Authors, Chairpersons, and Organizers
Proceedings of the American Control Conference - Tập 4 - Trang 3407-3419 - 2002
Presents an index of the authors whose papers are published in the conference.
Disturbance rejection for nonlinear systems
Proceedings of the American Control Conference - Tập 5 - Trang 3484-3489 vol.5 - 2002
Tracking or rejection of unknown exogenous signals with known generating
dynamics is of major concern in feedback control design. Linear feedback control
based on the internal model principle achieves asymptotic performance for linear
systems with linear exogenous signal dynamics. This paper presents a control
design based on the internal model principle to track or reject nonlinear
exogenous sign...
#Nonlinear systems #Aerodynamics #Linear systems #Feedback control #Sufficient conditions #Control design #Regulators #Nonlinear equations #Partial differential equations #Servomechanisms
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