International Journal of Engineering & Technology,
Год журнала:
2023,
Номер
12(2), С. 82 - 87
Опубликована: Ноя. 30, 2023
This
paper
investigates
the
automation
of
an
African
wooden
pestle.
device
is
used
in
kitchen
to
cook
traditional
meals.
Because
pounding
food
painful
for
human
arm
and
blenders
cause
a
lack
consistency
final
product,
we
study
this
by
proposing
two
solutions.
The
first
solution
closed-loop
electro-hydraulic
linear
actuation.
second
electro-pneumatic
These
actuators
are
chosen
because
they
generate
translational
force.
A
particular
reference
signal
proposed
mimic
process.
numerical
simulations
executed
Matlab/
Simulink/
Simscape
environment
reveal
that
hydraulic
actuation
provides
best
results,
particularly
products
with
medium-high
mechanical
resistance.
Future
works
will
present
results
obtained
experimental
prototypes.
Proceedings of the Institution of Mechanical Engineers Part E Journal of Process Mechanical Engineering,
Год журнала:
2023,
Номер
unknown
Опубликована: Окт. 30, 2023
The
automatic
clutch’s
precise
and
stable
position
tracking
is
critical
in
automated
manual
transmission,
significantly
influencing
vehicle
performance.
Clutch
control
challenging
due
to
directly
unmeasurable
clutch
output
position,
nonlinear
characteristics,
parameter
uncertainties,
external
disturbance
of
the
system.
This
paper
proposes
an
observer-based
adaptive
dynamic
sliding
mode
strategy
overcome
these
obstacles
process.
extended
state
observer
(ESO)
introduced
designed
handles
total
disturbance,
including
nonlinearities
uncertainties
for
feedback
compensation.
A
sigmoid
differentiator
arranges
transient
process
smooth
approach
signal
reference
input
its
differential
signal.
An
controller
acts
as
primary
realize
fast
system
based
on
from
ESO.
Simulation
hardware-in-loop
(HIL)
experimental
tests
verify
effectiveness
advantage
proposed
performance
face
perturbation
example,
root
mean
square
value
static
error
14.9%
24.7%
lower
than
that
ESO-based
robust
HIL
test,
respectively.
This
paper
develops
an
improved
second-order
filter
unknown
disturbance
estimator
(UDE)
with
adaptive
nonsingular
fast
terminal
sliding
mode
control
(ANFTSMC)
to
solve
the
trajectory
tracking
problem
of
uncertainties
and
external
disturbances
in
robotic
system.
The
developed
UDE
-ANFTSMC
controller
not
only
uses
advantages
NFTSM
theory
ensure
convergence
speed,
avoid
singularity
robustness
disturbances,
but
also
estimate
suppress
Firstly,
is
introduced,
then
ANFTSM
scheme
designed
a
NTFSM
surface.
Lyapunov
stability
was
used
for
analysis,
manipulator
mathematic
model
SolidWorks'
prototype
were
demonstrate
effectiveness
proposed
scheme.
Actuators,
Год журнала:
2024,
Номер
13(10), С. 423 - 423
Опубликована: Окт. 18, 2024
Aiming
at
the
problems
of
low
trajectory
tracking
accuracy,
serious
chattering
and
poor
robust
performance
ball
screw
feed
systems
in
traditional
sliding
mode
control
(SMC),
this
paper,
a
global
nonsingular
fast
terminal
(GNFTSMC)
strategy
based
on
improved
double
power
reaching
law
(DPRL)
extended
state
observer
(ESO)
is
proposed.
Firstly,
system
variable
introduced
into
term
DPRL,
so
that
DPRL
has
characteristics
speed
reaching,
which
solves
contradiction
between
rate
chattering.
Secondly,
ESO
designed
to
observe
match
external
disturbance
improve
anti-interference
system.
Finally,
GNFTSMC
for
system,
factor
accuracy
The
results
show
proposed
can
effectively
This
paper
addresses
the
control
of
a
pressure
regulator
which
reduces
from
an
upstream
chamber
to
desired
lower
in
downstream
one.
Most
results
literature,
either
neglect
actuator
dynamic
embedded
reducer,
or
develop
specific
design
dedicated
their
system.
In
this
study,
we
propose
take
into
account
inner
with
system
designed
independently.
The
objective
is
enable
modular
architecture.
It
also
justifies
classical
cascade
approach.
A
modeling
work
physical
combined
some
practical
assumptions
provides
simple
linear
model.
An
output
feedback
ensure
stability,
performance
requirements
and
cope
saturation
nonlinearity.
Robust
analysis
approach
sector
condition
are
used
address
feature
as
well
independent
controlled
reduced
on
subsystem.
Stability
overall
expressed
LMI
tests.
Simulation
experimental
tests
show
validity
proposed
methodology.
International Journal of Engineering & Technology,
Год журнала:
2023,
Номер
12(2), С. 82 - 87
Опубликована: Ноя. 30, 2023
This
paper
investigates
the
automation
of
an
African
wooden
pestle.
device
is
used
in
kitchen
to
cook
traditional
meals.
Because
pounding
food
painful
for
human
arm
and
blenders
cause
a
lack
consistency
final
product,
we
study
this
by
proposing
two
solutions.
The
first
solution
closed-loop
electro-hydraulic
linear
actuation.
second
electro-pneumatic
These
actuators
are
chosen
because
they
generate
translational
force.
A
particular
reference
signal
proposed
mimic
process.
numerical
simulations
executed
Matlab/
Simulink/
Simscape
environment
reveal
that
hydraulic
actuation
provides
best
results,
particularly
products
with
medium-high
mechanical
resistance.
Future
works
will
present
results
obtained
experimental
prototypes.
