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A self-healing strategy with fault-cell reutilization of bio-inspired hardware

Chinese Journal of Aeronautics 2019年第7期32卷 1673-1683页

作者： Zhai ZHANG Yao QIU Xiaoliang YUAN Rui YAO Yan CHEN Youren WANG College of Automation Engineering Nanjing University of Aeronautics and Astronautics

The self-healing strategy is a key component in designing the bio-inspired embryonics circuit with the structure of cell arrays. However, the existing self-healing strategies of embryonics circuits mainly focus on permanent faults inside the modules of cells such as the function module and the configuration register, while little attention is paid to transient faults. From the point of view of obtaining high efficiency of hardware utilization, it would be a huge waste of hardware resources by permanent elimination when a cell only suffers a transient fault which can be repaired by a configuration mechanism. A new self-healing strategy, the Fault-Cell Reutilization Self-healing Strategy(FCRSS) which presents a method for reusing transient fault cells, is proposed in this paper. The circuit structures of all the modules in the cells are described in detail. In the new strategy, two processes of elimination and reconfiguration are combined. Within the process of fault-cell elimination, cells with transient faults in the embryonics circuit array could be reused simultaneously to replace the functions of the cells on their left side in the same row. Therefore, transient fault-cells in a transparent state can be reconfigured to realize the fault-cell reutilization. Finally,a circuit simulation, resource consumption, a reliability analysis and a detailed normalization analysis are presented. The FCRSS can improve the hardware utilization rate and system reliability at the expense of a small amount of hardware resources and reconfiguration time. Following the conclusion, the method of determining the optimal self-healing strategy is presented according to the environmental conditions.

关键词： Bio-inspired hardware embryonics Fault-cell reutilization Reliability analysis Self-healing strategy Transient fault

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Elimination-Evolution Self-repair Method for Bio-inspired Electronic System

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Journal of Donghua University(English Edition) 2016年第2期33卷 261-265页

作者：朱赛蔡金燕孟亚峰李丹阳 Department of Electronic and Optical Engineering Mechanical Engineering College

The existing self-repair methods,evolvable hardware and embryonic electronics( embryonics) are analyzed. Based on the advantages and disadvantages of the existing self-repair methods,a novel self-repair method named elimination-evolution self-repair method is proposed. The system can be repaired through elimination in real time and evolved to optimize the allocation of system resources with this method. The proposed self-repair method not only ensures the speed of the system's self-repair,but also makes full use of system resources to improve the system's self-repair capacity and provides a new self-repair approach for bio-inspired electronic system. In the end,the advantages of the proposed eliminationevolution self-repair method are verified through a simulation experiment.

关键词： bio-inspired electronic sytem embryonics evolvable hardware self-repair elimination-evolution self-repair

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