Structure diversity design of analog circuits by evolutionary computation for fault-tolerance
Structure diversity design of analog circuits by evolutionary computation for fault-tolerance
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DOI：
10.1109/icsai.2012.6223137
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发表时间：
2012-05
期刊：
影响因子：
--
通讯作者：
Huan Chang;Jingsong He
中科院分区：
文献类型：
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作者：
Huan Chang;Jingsong He
容错性是模拟电路设计的一个重要因素。特别是在极端环境下，故障具有不确定性、时变性和不可预测性。设计对未知故障具有鲁棒性的容错模拟电路具有重要意义。多电路集成是一种有效的基于空间冗余的容错技术。在多电路集成对未知故障的鲁棒性设计中，产生不同结构的子电路是一个关键问题。因此，本文重点研究了模拟电路的结构多样性设计。分析了开放式模拟电路设计中的结构收敛问题，提出了一种新的进化设计模型。另一方面，在适应度函数中加入结构空间拥挤因子和基因型相似性惩罚，提高种群多样性。对低通滤波器的实验表明，该算法产生了不同结构的电路，在一定程度上提高了种群的结构多样性。
Fault-tolerance is an essential factor of analog circuit design. Especially in extreme environment, faults would be uncertain, time-variant and unpredictable. It is significant to design fault-tolerant analog circuit robust to unknown faults. Using multiple circuit ensembles is an effective fault-tolerance technology based on space redundancy. In the design of multiple circuit ensembles robust to unknown faults, the key issue is generating sub-circuits with different structure. Therefore in this paper, our emphasis is on researches about structure diversity design of analog circuits. We make analysis on a structure convergence problem in open-ended analog circuit design and proposed a novel evolution design model. On the other hand, we add structure space crowding factor and genotype similarity penalty into fitness function for improving population diversity. Experiments on low-pass filters show that circuits with different structure are generated and, in a certain extent, structure diversity of the population has been improved.