A novel self-adaptive Circuit design technique based on evolvable hardware
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A Novel Self-adaptive Circuit Design Technique Based on Evolvable Hardware Jun-Bin Zhang
Jin-Yan Cai
Ya-Feng Meng
Tian-Zhen Meng
Department of Electronic and Optical Engineering, Mechanical Engineering College, Shijiazhuang 050003, China
Abstract: Since traditional fault tolerance methods of electronic systems are based on redundant fault tolerance technique, and their structures are fixed when circuits are designed, the self-adaptive ability is limited. In order to solve these problems, a novel circuit self-adaptive design technique based on evolvable hardware (EHW) is proposed. It features robustness, self-organization and self-adaption. It can be adapted to a complex environment through dynamic configuration of the circuit. In this paper, the proposed technique simulated. The consumption of hardware resources and the number of convergence iterations researched. The effectiveness and superiority of the proposed technique are verified. The designed circuit has the ability of resistible redundant-state interference (RRSI). The proposed technique has a broad application prospect, and it has great significance. Keywords: Circuit design, self-adaptive design, redundant fault tolerance technique, evolvable hardware (EHW), evolutionary algorithms (EA).
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Introduction
With the rapid development of information technology, large scale integrated (LSI) and very large scale integrated (VLSI) circuits are widely used in electronic systems. Under complex natural environment (i.e., universe, blue-sea, strong electromagnetism, and strong temperature difference, etc.), the circuit faults appear easily[1] . Circuit faults emerge frequently, which will inevitably lead to serious losses without self-repair in time. The performance of the digital circuit will be affected, and its efficacy will be reduced. Nowadays, redundant fault tolerance design is widely used to improve the adaptive capability of electronic systems. Although this method is simple to implement, its cost is high, and not all plug-ins or component level circuits can realize redundant backups, so the applications in self-repair are limited[2, 3] . Furthermore, according to the conventional circuit design method, the circuit structure is fixed when circuit has been designed. Because environmental changes may lead to fault changes, self-adaptively changing the circuit structures based on the change of faults will become more important under the condition that the circuit system produces normal output. In order to ensure the circuit system can output normal signals, self-adaptive changing the circuit structures based on the fault information will become more important. Therefore, the adaptive ability of electronic systems has become an urgent matter[4−6] . Research Article Manuscript received September 3, 2014; accepted September 22, 2015 This work was supported by National Natural Science Foundation of China (Nos. 61271153 and 61372039) Recommended by Associate Editor Chandrasekhar Kambhampati c Institute of Automation, Chinese Academy of Sciences and Springer-Verlag Be
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