Wrap lines to 80 chars
This commit is contained in:
parent
24bae81304
commit
764e695c05
@ -225,8 +225,9 @@ instructions as a set of formal requirements. The behavior of any control system
|
||||
originates in requirements: statements about what the system must do, must not
|
||||
do, and under what conditions. For nuclear systems, these requirements derive
|
||||
from multiple sources including regulatory mandates, design basis analyses, and
|
||||
aforementioned operating procedures. The challenge is formalizing these requirements with
|
||||
sufficient precision that they can serve as the foundation for autonomous
|
||||
aforementioned operating procedures. The challenge is formalizing
|
||||
these requirements with sufficient precision that they can serve as
|
||||
the foundation for autonomous
|
||||
control system synthesis and verification. We can build these requirements using
|
||||
temporal logic.
|
||||
|
||||
@ -253,8 +254,8 @@ experience. Our methodology assumes this domain knowledge exists and provides a
|
||||
framework to formalize it. This is why the approach is feasible for nuclear
|
||||
applications specifically: the work of defining safe operating boundaries has
|
||||
already been done by generations of nuclear engineers. The work of translating
|
||||
these requirements from interpretable natural language to a formal requirement is
|
||||
what remains to be done.
|
||||
these requirements from interpretable natural language to a formal
|
||||
requirement is what remains to be done.
|
||||
|
||||
Linear temporal logic (LTL) is particularly well-suited for specifying reactive
|
||||
systems. LTL formulas are built from atomic propositions (our discrete
|
||||
@ -365,8 +366,9 @@ discrete state are themselves the guard conditions $\mathcal{G}$ that define
|
||||
the boundaries for each continuous controller's allowed state-space region.
|
||||
These continuous controllers all share a common state space, but each
|
||||
individual continuous control mode operates within its own partition defined
|
||||
by the discrete state $q_i$ and the associated guard conditions. This partitioning of
|
||||
the continuous state space among several distinct vector fields has
|
||||
by the discrete state $q_i$ and the associated guard conditions.
|
||||
This partitioning of the continuous state space among several
|
||||
distinct vector fields has
|
||||
traditionally been a difficult problem for validation and verification. The
|
||||
discontinuity of the vector fields at discrete state interfaces makes
|
||||
reachability analysis computationally expensive, and analytic solutions often
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user