Applied Sciences,
Год журнала:
2021,
Номер
11(14), С. 6299 - 6299
Опубликована: Июль 7, 2021
The
distributed
attitude
synchronization
control
problem
for
spacecraft
formation
flying
subject
to
limited
energy
and
computational
resources
is
addressed
based
on
event-triggered
mechanism.
Firstly,
a
event-driven
controller
designed
achieve
coordination
with
the
limitation
of
computing
resources.
Under
proposed
strategy,
only
updated
at
event
triggering
instants,
which
effectively
reduces
update
frequency.
Subsequently,
an
strategy
developed
further
decrease
consumption
amount
computation.
function
requires
latest
state
information
about
its
neighbors,
implying
that
trigger
threshold
does
not
need
be
calculated
continuously.
It
shown
interval
between
two
successive
events
strictly
positive,
showing
system
has
no
Zeno
phenomenon.
Moreover,
frequency
can
reduced
by
more
than
90%
compared
corresponding
time-driven
10
Hz
choosing
appropriate
parameters
still
high-precision
convergence.
Finally,
effectiveness
constructed
scheme
verified
numerical
simulations.
IEEE Transactions on Aerospace and Electronic Systems,
Год журнала:
2021,
Номер
58(3), С. 1721 - 1732
Опубликована: Окт. 20, 2021
This
article
investigates
the
event-triggered
attitude
cooperative
control
problem
for
spacecraft
formation
flying
subject
to
unknown
external
disturbances
and
model
uncertainties.
Considering
that
only
a
subset
of
have
access
desired
state
information,
distributed
strategy
is
proposed
achieve
synchronization.
The
controller
updated
when
triggering
condition
satisfied,
which
greatly
reduces
frequency
update.
It
shown
trajectories
errors
are
able
remain
in
small
region
around
origin.
Subsequently,
order
decrease
energy
consumption
computational
burden,
an
mechanism
requires
last
neighbors'
information
designed.
has
been
proved
interval
strictly
positive
lower
bound,
ensures
Zeno
behavior
can
be
avoided.
Finally,
numerical
simulations
come
out
verify
effectiveness
developed
law.
