Adaptive fuzzy finite-time control for a QUAV with tracking error constraints and unknown actuator faults
Aerospace Science and Technology,
Год журнала:
2025,
Номер
unknown, С. 110054 - 110054
Опубликована: Фев. 1, 2025
Язык: Английский
Distributed fixed-time formation control for UAV-USV multiagent systems based on the FEWNN with prescribed performance
Ocean Engineering,
Год журнала:
2025,
Номер
328, С. 120996 - 120996
Опубликована: Март 26, 2025
Язык: Английский
Approximation-based adaptive fixed-time tracking control for uncertain high-order nonlinear systems subject to time-varying parameters and unknown input nonlinearity
Scientific Reports,
Год журнала:
2025,
Номер
15(1)
Опубликована: Март 26, 2025
Abstract
In
this
paper,
the
fixed-time
tracking
control
(FTTC)
problem
is
discussed
for
a
type
of
uncertain
high-order
nonlinear
systems.
Compared
with
existing
works,
studied
system
affected
by
time-varying
parameters
and
unknown
input
nonlinearity.
By
applying
neural
network
(NN)
approximation
method
together
adaptive
method,
theory,
backstepping
Nussbaum
gain
function
(NGF)
technique,
an
NN-based
FTTC
scheme
presented
to
achieve
fixed
time
tracking.
Especially,
NGF
utilized
handle
caused
Furthermore,
some
laws
are
formulated
estimate
parameters.
Under
influence
different
nonlinearity,
it
can
be
inferred
that
designed
strategy
guarantees
error
converges
small
neighborhood
zero
within
time,
while
also
maintaining
boundedness
all
signals
closed-loop
system.
Finally,
three
simulation
cases
validate
availability
theoretical
results.
Язык: Английский
Distributed Event‐Triggered Optimization for Multiple USVs With Coupled Objective Functions
International Journal of Robust and Nonlinear Control,
Год журнала:
2025,
Номер
unknown
Опубликована: Апрель 29, 2025
ABSTRACT
This
article
presents
an
innovative
fixed‐time
optimal
control
framework
for
the
formation
optimization
of
multiple
unmanned
surface
vehicles
(USVs)
with
coupled
objective
functions,
where
each
USV's
function
depends
not
only
on
its
own
decision
variables
but
also
those
neighbors.
Unlike
conventional
algorithms,
proposed
simultaneously
considers
individual
states
and
dynamic
influences
neighbors,
making
it
particularly
suitable
realistic
systems.
The
guarantees
convergence
within
a
fixed
time,
independent
initial
conditions,
rigorously
derived
upper
bound
time.
To
address
challenges
coupling
inequality
constraints
in
USV
optimization,
gradient
projection
method
is
used.
Furthermore,
communication
event‐triggered
mechanism
introduced
to
significantly
reduce
frequency
updates
while
avoiding
Zeno
behavior,
thereby
enhancing
resource
efficiency.
preserve
information
privacy
ensure
secure
operations,
auxiliary
systems
are
incorporated
into
framework.
Additionally,
neural
network‐based
strategy
integrated
handle
parameter
uncertainties
models
USVs,
effectively
compensating
unknown
system
variations.
Simulation
results
validate
effectiveness
robustness
achieving
resource‐efficient,
privacy‐preserving,
USVs
Язык: Английский
Sampled-data control for nonlinear systems with mismatched disturbances: a non-recursive design framework
Journal of Control and Decision,
Год журнала:
2025,
Номер
unknown, С. 1 - 12
Опубликована: Май 6, 2025
Язык: Английский
Distributed Secure Control for Nonlinear Descriptor Multiagent Systems With Unknown Inputs Under Denial-of-Service Attacks
IEEE Transactions on Cybernetics,
Год журнала:
2024,
Номер
55(1), С. 472 - 485
Опубликована: Ноя. 18, 2024
This
article
investigates
the
secure
control
problem
for
a
class
of
Lipschitz
nonlinear
descriptor
multiagent
systems
(MASs)
with
unknown
inputs
under
Denial-of-Service
(DoS)
attacks.
In
order
to
address
presence
state
variables
and
external
disturbances
in
both
output
equations,
local
input
observer
(UIO)
is
developed
each
follower
agent.
The
proposed
UIO
capable
simultaneously
estimating
system
state,
measurement
noise
through
an
interval
observer.
With
regards
DoS
attacks,
we
consider
two
types:
those
that
maintain
connectivity
paralyze
it
by
disrupting
structure
information
communication
topology
graph.
By
utilizing
UIO,
distributed
compensation
controller
designed
achieve
asymptotic
consensus
leader-following
MASs
Additionally,
comprehensive
stability
analysis
closed-loop
provided,
taking
into
account
switching
systems.
Finally,
simulation
examples
are
presented
validate
effectiveness
UIO-based
scheme.
Язык: Английский
Adaptive trajectory tracking control of robotic manipulators based on integral sliding mode
Asian Journal of Control,
Год журнала:
2024,
Номер
unknown
Опубликована: Окт. 2, 2024
Abstract
This
paper
proposes
an
adaptive
control
scheme
with
finite‐time
convergent
property
based
on
integral
sliding
mode
to
achieve
trajectory
tracking
of
rigid
robotic
manipulators.
The
novel
gain
can
be
adjusted
automatically
the
system
disturbance,
as
long
disturbance
and
its
derivative
are
bounded
without
requiring
more
information.
Therefore,
chattering
effect
mitigated
obviously.
global
robustness
is
guaranteed
by
Lyapunov
stability
analysis.
Finally,
simulation
a
two‐link
manipulator
given
show
that
desired
performance
obtained
proposed
approach.
Язык: Английский
Relaxed results on reachable set estimation of singular system with time-varying delay
Transactions of the Institute of Measurement and Control,
Год журнала:
2024,
Номер
unknown
Опубликована: Дек. 31, 2024
This
paper
further
investigates
the
problem
of
reachable
set
estimation
(RSE)
for
a
class
continuous-time
singular
systems
with
time-varying
delay.
First,
we
use
relaxed
Lyapunov–Krasovskii
functional
to
tackle
RSE
problem.
does
not
need
all
matrices
concerned
be
positive
definite.
In
addition,
novel
weighted
integral
inequality
and
time-delay
partition
approach
are
utilized
reduce
conservatism
in
results.
Based
on
these
methods,
sufficient
conditions
form
linear
matrix
inequalities
established.
Finally,
correctness
validity
results
demonstrated
by
three
simulation
examples.
Язык: Английский