NARX modeling and simulation of heave dynamics with application of robust control of an underactuated underwater vehicle
Ocean Engineering,
Journal Year:
2025,
Volume and Issue:
325, P. 120790 - 120790
Published: March 6, 2025
Language: Английский
A Chattering-Suppression Sliding Mode Controller for an Underwater Manipulator Using Time Delay Estimation
Journal of Marine Science and Engineering,
Journal Year:
2023,
Volume and Issue:
11(9), P. 1742 - 1742
Published: Sept. 5, 2023
Underwater
manipulators
are
pivotal
in
diverse
applications,
encompassing
underwater
pipeline
repairs,
salvage
operations,
and
scientific
sampling
missions.
However,
attaining
high-precision
control
mandates
the
establishment
of
precise
mathematical
models.
Specifically,
developing
an
accurate
dynamic
model
for
manipulator
affixed
to
robots
proves
exceptionally
demanding,
primarily
attributed
uncertainties
arising
from
water
currents
perturbations
induced
by
vehicle’s
motion.
This
paper
presents
a
novel
sliding
mode
controller
with
time
delay
estimation
mounted
on
vehicle.
The
presented
circumvents
requirement
exact
manipulator,
enhancing
its
precision
even
without
detailed
modeling
information.
Moreover,
proposed
guarantees
robustness
against
uncertain
flow
disturbances,
effectively
preserving
performance
under
challenging
conditions.
comprises
two
key
elements.
Firstly,
estimator
is
employed
estimate
system
states
using
feedback
intentional
time-delayed
inputs
pre-designed
matrix.
Additionally,
specially
designed
reaching
law
incorporated
reduce
prevent
chattering
control.
offers
several
advantages,
including
easy
implementation,
insensitivity
uncertainties,
environment.
Simulations
experiments
demonstrate
ability
mitigate
eliminate
chattering,
ensure
trajectory-tracking
performance.
conducted
fully
self-developed
2-degree-of-freedom
(2-DOF)
showcasing
superiority
over
other
alternatives.
Language: Английский
GA Optimized PI-PDN Robust Control of a 1-DOF Maglev Precision Position System
IEEE Access,
Journal Year:
2023,
Volume and Issue:
11, P. 130955 - 130973
Published: Jan. 1, 2023
This
paper
investigates
2
difficult
problems
encountered
in
magnetic
levitation
systems:
robust
control
design
and
disturbance
rejection.
A
PI-PDN
strategy
is
developed
to
the
position
of
a
1-degree-of-freedom
(DOF)
levitated
rigid
beam
system
or
MLS
for
precision
positioning
applications
under
parametric
variations,
uncertainties,
external
disturbances.
The
proposed
gains
are
optimized
by
employing
Genetic
Algorithm
(GA),
Marine
Predator
(MPA),
Particle
Swarm
Optimization
(PSO).
GA-tuned
lead
manifold
improvement
key
time
frequency
domain
performance
specifications
rise
time,
settling
overshoot,
tracking
error,
bandwidth,
classical
gain
phase
margins.
Additionally,
metrics
disk
margins
(DM)
employed
assessing
robustness
closed-loop
subjected
simultaneous
variation
phase.
To
demonstrate
effectiveness
GA-PI-PDN
topology,
numerical
simulation
results
compared
with
corresponding
benchmark
PIDN
that
GA-PI-PDN.
algorithms
were
deployed
on
dedicated
embedded
utilizing
Simulink
automatic
C++
code
generation
capabilities.
development
different
strategies
was
aided
building
high
fidelity
mathematical
model
electromagnets
experimental
determination
important
parameters.
Language: Английский
Hybrid Layer of Improved Interfered Fluid Dynamic System and Nonlinear Model Predictive Control for Navigation and Control of Autonomous Underwater Vehicles
Journal of Marine Science and Engineering,
Journal Year:
2023,
Volume and Issue:
11(10), P. 2014 - 2014
Published: Oct. 19, 2023
This
study
introduces
a
hybrid
control
structure
called
Improved
Interfered
Fluid
Dynamic
System
Nonlinear
Model
Predictive
Control
(IIFDS-NMPC)
for
the
path
planning
and
trajectory
tracking
of
autonomous
underwater
vehicles
(AUVs).
The
system
consists
two
layers;
upper
layer
utilizes
(IIFDS)
planning,
while
lower
employs
(NMPC)
tracking.
Extensive
simulation
experiments
are
conducted
to
determine
optimal
parameters
both
static
dynamic
obstacle
scenarios.
Additionally,
real-world
testing
is
performed
using
BlueRov2
platform,
incorporating
multiple
obstacles.
proposed
approach
achieves
real-time
at
frequency
100
Hz
exhibits
impressive
accuracy,
with
root
mean
square
(RMS)
0.02
m.
research
provides
valuable
framework
navigation
in
practical
applications.
Language: Английский
Underwater remotely operated vehicle control system with optimized PID based on improved particle swarm optimization
Weixing Liu,
No information about this author
Zihan Xia,
No information about this author
Linyan Wu
No information about this author
et al.
Desalination and Water Treatment,
Journal Year:
2023,
Volume and Issue:
314, P. 322 - 329
Published: Dec. 1, 2023
On
account
of
the
exponential
development
control
theory
and
artificial
intelligence
technology
in
recent
years,
more
is
applied
to
robots,
but
PID
method
due
simple
structure
good
stability
still
has
research
value,
core
difficulty
optimization
parameters.In
order
solve
underwater
remotely
operated
vehicle
(ROV)
with
high
nonlinearity
strong
coupling
characteristics,
it
can
adjust
its
attitude
time
ensure
performance
face
disturbance
external
complex
environment.By
improving
particle
swarm
inertia
weights,
(PSO)
algorithm
reduces
situation
falling
into
local
optimal
solution
applies
adaptive
parameterization.Comparing
improved
PSO-PID
traditional
simulation,
concluded
that
certain
improvement
on
ROV,
which
feasibility.
Language: Английский