基于演化硬件的硬件重构编码方案及演化算法研究

Hardware reconfigurable coding and evolution algorithm based on evolvable hardware

基于柔性网络技术背景,面向SRAM结构的FPGA平台,提出一种基于LUT(look up table)结构的二维映射函数增量染色体编码方案(PMFICC,planar mapped function increments chromosome coding),该方案利用二进制配置文件串双平面映射方式进行编码变换,可有效提高硬件的重构效率。同时在该方案的基础上引入局部优化机制,提出一种改进的差分演化(MDE,modified differential evolution)算法,该算法可有效提高收敛速度和全局优化效率。最后对该算法进行了仿真验证,结果表明:MDE算法改进了差分演化算法容易陷入局部最优的不足,可以更加逼近实际最优解。

A planar mapping function increments chromosome coding method based on FPGA platform with SRAM-architecture was proposed. The method could improve hardware reconfiguration efficiency by coding mapping realized by double platform mapping of binary configurable file string. Meanwhile, a betterment difference evolution algorithm was proposed based on local optimal mechanism introduced. The algorithm could promote convergence rate and whole efficiency. Finally, the result of the algorithm emulation shows that： MDE improves disadvantage of difference evolution algorithm with local optimal and approaches actual optimization outcome.