Model-based integration and verificafion for mixed-criticality avionics systems embedded in a time-triggered architecture

嵌入时间触发架构中的混合关键性航空电子系统的基于模型的集成和验证

• 批准号: 435325-2012
• 负责人: Mullins, John
• 金额: $ 6.4万
• 依托单位: École Polytechnique de Montréal
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=533172
• 关键词: Model; based; integration; verificafion; mixed

Incremental certification of airplanes imposes a model-based design of avionic systems, relying more and more on Integrated Modular Avionics (IMA). IMA defines a distributed architecture allowing the reduction of size, weight, and power (SWaP) and is supported by several standards, such as ARINC 653 (an interface for the integration of avionic functions of mixed criticality sharing distributed hardware resources). In order to increase dependability and ease the integration process, the Time-Triggered Architecture (TTA) offers a theoretical framework for new synchronous communication devices. TTA offers a reliable synchronization mechanism for distributed systems and has recently been implemented as the TTEthernet protocol, allowing high performance with strong real-time guarantees while still encapsulating asynchronous communications. Both IMA and TTA segregate mixed-criticality components into partitions for a safer integration. Indeed, IMA enables applications to interact safely by partitioning them spatially (memory zones) and temporally (processor schedules) over distributed Real-Time Operating Systems (RTOS), while TTA allows distributed software and hardware to communicate safely between these RTOS through Time Division Multiple Access (TDMA), i.e., by partitioning bandwidth into time slots (network schedules). The combined use of IMA and TTA makes model-based design of avionic systems focus essentially on the integration through the static definition of resource allocation and mixed-criticality partitions interaction. Although IMA and TTA have already been studied in the literature, their integration with their implementations as ARINC 653 and TTEthernet has not yet been addressed. In order to allow model-based verification and validation of next-generation avionic systems, we will define a formal framework inspired from (a combination of) standard modeling languages such as AADL and UML MARTE. The goal of this project is to offer a model-based integration platform using real-time scheduling, simulation and formal verification approaches, all tailored for systems combining IMA and TTA.

飞机的增量认证要求航空电子系统采用基于模型的设计，越来越依赖集成模块化航空电子设备（IMA）。 IMA 定义了一种分布式架构，允许减小尺寸、重量和功耗 (SWaP)，并受到多个标准的支持，例如 ARINC 653（用于集成共享分布式硬件资源的混合关键性航空电子功能的接口）。为了提高可靠性并简化集成过程，时间触发架构（TTA）为新的同步通信设备提供了理论框架。 TTA 为分布式系统提供了可靠的同步机制，最近已作为 TTEthernet 协议实现，在封装异步通信的同时，具有强大的实时保证的高性能。 IMA 和 TTA 都将混合关键性组件隔离到分区中，以实现更安全的集成。事实上，IMA 通过分布式实时操作系统 (RTOS) 上的空间（内存区域）和时间（处理器调度）分区使应用程序能够安全地交互，而 TTA 允许分布式软件和硬件通过时分复用在这些 RTOS 之间安全地通信接入 (TDMA)，即通过将带宽划分为时隙（网络调度）。 IMA和TTA的结合使用使得基于模型的航空电子系统设计本质上侧重于通过资源分配和混合关键性分区交互的静态定义进行集成。尽管 IMA 和 TTA 已在文献中进行了研究，但它们与 ARINC 653 和 TTEthernet 等实现的集成尚未得到解决。为了允许对下一代航空电子系统进行基于模型的验证和验证，我们将定义一个受标准建模语言（例如 AADL 和 UML MARTE 的组合）启发的正式框架。该项目的目标是提供一个基于模型的集成平台，使用实时调度、模拟和形式验证方法，所有这些方法都是为结合 IMA 和 TTA 的系统量身定制的。