Formal semantics of behavior specifications in the architecture analysis and design language standard

Abstract

Abstract-In system design, an architecture specification or model serves, among other purposes, as a repository to share knowledge about the system being designed. Such a repository enables automatic generation of analytical models for different aspects relevant to system design (timing, reliability, security, etc.). The Architecture Analysis and Design Language (AADL) is a standard proposed by SAE to express architecture specifications and share knowledge between the different stakeholders about the system being designed. To support unambiguous reasoning, formal verification, high-fidelity simulation of architecture specifications in a modelbased AADL design workflow, we have defined a formal semantics for the behavior specification of the AADL, the presentation of this semantics is the aim of this paper.

Polychronous automata and their use for formal validation of AADL models

“…We will now focus on the translation of a state transition system described through an AADL behavior annex to a polychronous automaton described in Signal. The rules describing formally the semantics of the Behavior Annex and its translation in transition systems represented as polychronous automata are de-tailed in [38]. Here, we rather provide the intuition of this translation as Signal automata through our case study.…”

Formal Semantics of Behavior Specifications in the Architecture Analysis and Design Language Standard

“…Property associations Figure 2. Control subsystem of the ACC system modeled with AADL specifying the main computational process and its associated ECU, bus and memory properties [6].…”

“…The transition system of an automaton A is defined by the function T A ∈ S A × F A → F A × S A whose Figure 3. Overview of the ACC transition system with operation states, behavior conditions and variables [6] quadruples (s, g, a, t) define the source state s, guard formula g, action formula a and target state t of a specified transition.…”

“…The extended version of this paper, [6], details the implementation of the present model using the synchronous modeling environment Polychony on Polarsys 3 and applies it to the high-fidelity functional and real-time model of an adaptative cruise control system, Fig. 1.…”

“…Overview of the Adaptive Cruise Control system modeled with AADL[6]. Double-lined rectangles represent devices, doublearrows buses and rectangles with rounded corners systems and subsystems.…”