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首页> 外文期刊>The Aeronautical Journal >Reliable flight control system architecture for agile airborne platforms: an asymmetric multiprocessing approach
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Reliable flight control system architecture for agile airborne platforms: an asymmetric multiprocessing approach

机译：敏捷机载平台的可靠飞行控制系统架构：一种非对称多处理方法

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摘要

System software subsystems in an unmanned aircraft system share hardware resources due to space, weight, and power constraints. Such subsystems have different criticality, requirements, and failure rates, and can cause undesired interference when sharing the same hardware.A component with high failure rate can reduce the reliability of the system unless a fault containment mechanism is adopted.This work proposes an asymmetric multiprocessor architecture to establish isolation at the hardware level for distributed implementation of safety-critical subsystems along with user defined payload subsystems on the same hardware with minimally reduced reliability of the system. To achieve that, subsystems are strategically segregated in separate processors, connected to an on-chip protective interconnect for inter-processor communications. A custom watchdog and reset mechanism are implemented to reset a specific processor without affecting the entire system if required. The architecture is demonstrated on a FPGA chip. In addition, an example of an optimised distribution is provided for a specific flight control system with five subsystems.
机译：由于空间，重量和功率的限制，无人飞机系统中的系统软件子系统共享硬件资源。这样的子系统具有不同的关键性，要求和故障率，并且在共享相同的硬件时可能会引起不希望的干扰。除非采用故障遏制机制，否则高故障率的组件会降低系统的可靠性。该体系结构可在硬件级别建立隔离性，以便在同一硬件上以分布式方式实施安全关键子系统以及用户定义的有效负载子系统，同时最大限度地降低了系统的可靠性。为了实现这一目标，子系统在策略上隔离在单独的处理器中，并连接至片上保护性互连以进行处理器间通信。实现了自定义的看门狗和重置机制，以重置特定处理器，而不影响整个系统（如果需要）。该架构在FPGA芯片上进行了演示。另外，为具有五个子系统的特定飞行控制系统提供了优化分配的示例。

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