一种用于顺序电路演化优化设计的外部EHW系统

Yanyun Tao, Yuzhen Zhang
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引用次数: 2

摘要

顺序电路进化设计的主要障碍是状态分配问题和整个电路的进化时间过长。为了使进化时间最小化,本文提出了一种基于电路进化代价进化的遗传算法(GA)来进化状态分配,从而降低复杂度。电路演化的代价评价被唯一地定义为状态分配候选者的适应度函数。在ga演化状态分配下,提出了一种新的基于lut的电路演化(LCE)方法,以提高对完整电路的搜索能力。一种结合遗传算法和LCE的外部EHW系统GALCE,旨在对顺序电路进行进化优化设计。该系统在8个顺序电路上进行了广泛的测试。仿真结果表明,该方法在平均进化时间缩短和成功率方面具有较好的性能。
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An extrinsic EHW system for the evolutionary optimization and design of sequential circuit
The main obstacles in the evolutionary design of sequential circuits are the state assignment and the large evolution time for a complete circuit. In this paper, in order to minimize evolution time, a genetic algorithm (GA) based on a cost evolution of the circuit evolution is proposed to evolve a state assignment, which can lead to complexity reduction. A cost evaluation of the circuit evolution is uniquely defined as the fitness function of state assignment candidates. Under the GA-evolved state assignment, a novel LUT-based circuit evolution (LCE) is proposed to improve the search for a complete circuit. An extrinsic EHW system namely GALCE, which combines GA and LCE, aims to the evolutionary optimization and design of sequential circuit. This system is tested extensively on eight sequential circuits. The simulation results demonstrate the proposed approach can perform better in terms of average evolution time reduction and success rate.
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