Applied Mathematics and Nonlinear Sciences,
Год журнала:
2024,
Номер
9(1)
Опубликована: Янв. 1, 2024
Abstract
The
application
of
water-fertilizer
integration
and
intelligent
irrigation
systems
in
cotton
production
will
greatly
promote
the
increase
yield
quality,
which
has
significant
value
for
production.
This
paper
introduces
Internet
Things
(IoT)
technology
system
shifts
to
an
information-centered
mode.
In
this
paper,
adopts
first
part
main
pipe
fertilizer
premixing
system,
combines
venturi
centrifugal
pumps
form
a
mixing
equipment
uses
sensors
collect
environmental
information
growth
development
condition
also
designs
fuzzy
PID
automation
control
module
realize
smart
irrigation.
test
on
June
22,
2022,
air
temperature
decreased,
humidity
increased,
light
intensity
gradually
decreased
after
15:30
due
weather
turning
cloudy.
After
rain
stopped
around
20:00,
detected
that
reached
lowest
practice
section,
28°C,
is
sensitive
environment.
Compared
with
artificial
method,
it
can
by
66.98%
while
saving
water
11.59%,
found
EC
solution
bucket
steady
state
at
about
150s,
decision-making
model
greater
superiority
compared
manual.
Scientific Reports,
Год журнала:
2024,
Номер
14(1)
Опубликована: Ноя. 16, 2024
Traditional
Proportional-Integral-Derivative
(PID)
control
systems
often
encounter
challenges
related
to
nonlinearity
and
time-variability.
Original
dung
beetle
optimizer
(DBO)
offers
fast
convergence
strong
local
exploitation
capabilities.
However,
they
are
limited
by
poor
exploration
capabilities,
imbalance
between
phases,
insufficient
precision
in
global
search.
This
paper
proposes
a
novel
adaptive
PID
algorithm
based
on
enhanced
(EDBO)
back
propagation
neural
network
(BPNN).
Firstly,
the
diversity
of
is
increased
incorporating
merit-oriented
mechanism
into
rolling
behavior.
Then,
sine
learning
factor
introduced
balance
Additionally,
dynamic
spiral
search
strategy
$$t$$
-distribution
disturbance
presented
enhance
capability.
The
BPNN
employed
fine-tune
both
parameters,
leveraging
its
powerful
generalization
ability
model
nonlinear
system
dynamics.
In
simplified
motor
experiments,
proposed
controller
achieved
lowest
overshoot
(0.5%)
shortest
response
time
(0.012
s),
with
settling
0.02
s
steady-state
error
just
0.0010.
another
set
recorded
an
0.7%
0.0010
s,
across
five
DC
tests.
These
results
demonstrate
has
superior
performance
optimizing
as
well
improving
robustness
stability.
International Journal of Power Electronics and Drive Systems/International Journal of Electrical and Computer Engineering,
Год журнала:
2024,
Номер
15(2), С. 696 - 696
Опубликована: Апрель 4, 2024
In
this
paper,
a
gradient-based
optimizer
(GBO)
algorithm
is
presented
to
optimize
the
parameters
of
proportional
integral
derivative
(PID)
controller
in
DC
motor
control.
The
GBO
which
mathematically
models
and
mimics
inspired
by
Newton
method.
It
was
developed
address
various
optimization
issues.
To
determine
performance
proposed
method,
comparison
method
with
ant
colony
(ACO)
compared
using
time
multiplied
absolute
error
(ITAE).
They
are
most
popularly
used
literature.
From
test
results,
promising
has
better
effectiveness.
namely
GBO-PID,
shows
best
performance.
Agriculture,
Год журнала:
2024,
Номер
14(2), С. 168 - 168
Опубликована: Янв. 23, 2024
In
addressing
the
control
of
asynchronous
motors
in
remote
conductivity
fertigation
machines,
this
study
proposes
a
joint
strategy
based
on
Fast
Terminal
Sliding
Mode
Control-Disturbance
Observer
(FTSMC-DO)
system
for
motors.
The
goal
is
to
enhance
dynamic
performance
and
disturbance
resistance
motors,
particularly
under
low-speed
operating
conditions.
approach
involves
refining
two-degree-of-freedom
internal
model
controller
using
fractional-order
functions
explicitly
separate
controller’s
robustness
tracking
capabilities.
To
mitigate
motor’s
sensitivity
external
disturbances
during
variable
speed
operations,
load
observer
introduced,
employing
hyperbolic
tangent
Fal
real-time
monitoring
compensation,
seamlessly
integrated
into
sliding
mode
controller.
address
issues
related
chattering
typically
associated
with
controllers,
introduces
revised
non-singular
fast
terminal
surface.
Additionally,
guided
by
fuzzy
principles,
enables
selection
approaching
law
parameters.
Experimental
results
from
motor
platform
demonstrate
that
FTSMC-DO
significantly
reduces
adjustment
time
fluctuations
operation,
minimizing
impact
system.
exhibits
robust
rejection,
improved
robustness,
enhanced
capability.
Furthermore,
field
tests
validate
effectiveness
regulating
electrical
(EC)
levels.
observed
be
less
than
120
s,
overshoot
16.1%,
EC
regulation
within
0.2
mS·cm−1
over
pipeline
distance
m.
consistently
achieves
desired
levels
minimal
fluctuation
overshoot,
outperforming
traditional
PID
SMC
methods.
This
high
level
precision
crucial
ensuring
optimal
nutrient
delivery
efficient
water
usage
agricultural
irrigation
systems,
highlighting
system’s
potential
as
valuable
tool
modern,
sustainable
farming
practices.
Scientific Reports,
Год журнала:
2025,
Номер
15(1)
Опубликована: Фев. 14, 2025
In
order
to
solve
the
problem
that
traditional
electronic
angle
sensor
cannot
be
directly
installed
on
high
voltage
isolation
switch
for
Angle
measurement,
a
system
isolating
le
measurement
is
proposed.
The
rotation
converted
straight
line
and
of
calculated
by
photoelectric
conversion
technology.
light
source
fluctuation
laser
receiver
causes
nonlinear
output
result
receiver,
which
compensates
intensity
received
in
both
hardware
software
respectively.
aspect,
two-optical
path
receiving
compensation
method
proposed
compensation.
terms
software,
sparrow
search
algorithm
(SSA)
(SSA-BP)
improve
detection
accuracy.
experimental
results
show
average
absolute
error
decreased
0.18
0.3
after
dual-path
SSA-BP
