为保证复杂电磁环境下嵌入式系统的安全运行,提出一种通用嵌入式系统在线故障自修复模型.基于ARM处理器和商业FPGA芯片实现原型试验系统,借鉴生物系统在遭受一定损伤时能自行康复的特点,结合仿生硬件领域中的内进化试验方法,在原型系统上设计重配置执行单元的门级冗余拓扑结构和自律控制单元的演化修复算法.利用马尔可夫模型评价系统的可靠性与稳态可用度.结果表明,在随机电磁损伤事件频繁发生并导致电路功能故障时,该系统能保持较高的可用度和安全性.%The reliability of embedded system has become an integral part of the designing process, especially for those systems applied in the complex electromagnetic environment. In this paper, the online self-repairing model based on general embedded systems is proposed. The prototype system is realized with the ARM processor and commercial FPGA chip. Based on the self-healing characteristic of injured biological systems and the experiment methods of intrinsic Bio-inspired Hardware(BHW), the reconfigured executing unit and self-discipline controlling unit are implemented. The redundant gate array is in each reconfigurable executing unit, while the self-discipline controlling unit implements the genetic algorithm for self-repairing. Markov model is used to analyze the steady-state availability of the prototype. The result improves that it can keep higher available degree and security when the damaging event in the complex electromagnetic environment happened frequently.
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