Home

modesroad

Modesroad is a conceptual framework used to model and analyze systems that operate in multiple distinct modes. It combines discrete mode switching with continuous dynamics and treats the sequence of modes as a road through a mode graph. Each node represents a mode of operation, such as hover, navigate, or idle, and each directed edge represents a permissible transition between modes, typically annotated with guards (conditions) and resets (state updates).

In a modesroad model, the system state is typically described by a pair (m, x) where m

Origins and usage: The concept draws from finite-state machines and hybrid automata, with the term "modesroad"

Examples and limitations: A drone with modes such as takeoff, cruise, hover, and land can be represented

Related concepts include finite-state machines, hybrid automata, and statecharts.

is
the
current
mode
and
x
is
the
vector
of
continuous
variables
(position,
velocity,
energy,
etc.).
When
a
guard
on
an
edge
is
satisfied,
the
system
transitions
to
the
target
mode
and
updates
x
accordingly.
The
model
supports
attributes
like
transition
costs,
timing
constraints,
and
safety
invariants.
appearing
in
academic
and
industry
texts
in
the
2010s
as
a
way
to
visualize
and
reason
about
mode-rich
control
systems.
It
is
used
in
planning,
simulation,
and
verification
of
autonomous
systems,
robots,
energy
networks,
and
software
orchestrations.
as
a
modesroad;
transitions
depend
on
sensor
inputs
and
energy
state.
Limitations
include
state-space
growth,
the
need
for
accurate
guards
and
resets,
and
challenges
in
formal
verification
for
large
systems.