共查询到20条相似文献,搜索用时 46 毫秒
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本文给出了基于演化算法和可编程逻辑器件的演化硬件的实现原理,并结合一个应用 实例加以说明,分析了该方法与传统的硬件设计方法相比的优越性,最后扼要介绍了演化硬件的研究方法以及它的应用现状和发展方向。 相似文献
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演化硬件的难点在于,当目标电路比较复杂时,解空间急骤增大,目前常用的演化方法及编码都存在一定的缺陷,可靠性不强。三元组编码是目前比较典型的一种方法,通过实验验证,在求解复杂问题时可靠性也不强,因此针对三元组编码提出一种改进策略,即利用树型结构对算法加以改进,提高算法可靠性,最终演化出消耗资源最少的数字电路.实验证明,算法改进是有效的,改进后的算法结果优于现有算法。 相似文献
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设计了一个基于函数级进化型硬件(FEHW)的高速模式识别系统,并提出了一种适合此系统的改进遗传学习算法——可变染色体长度遗传算法(VGA)。利用VGA代替简单的遗传算法(SGA)来处理大输入的图像数据,实时实现了3类飞机识别。仿真结果表明,VGA进化速度是SGA的9倍,识别率达到80%以上。 相似文献
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演化硬件在图像边缘检测中的应用 总被引:1,自引:0,他引:1
设计基于演化硬件(Evolvable Hardware,EHW)的快速边缘检测进化系统,提出一种适于此系统的图像边缘提取操作结构,给出进化算法的编码方案,设计用于染色体评估的适应度函数,利用标准遗传算法来实现可变结构参数的图像边缘提取进化方法,并采用Roberts,Sobel,LOG,Robinson等传统边缘检测算法与进化方法进行对比试验。结果表明:进化方法边缘检测误差率最低,只有9.87%,其边缘提取的效果优于传统检测方法, 相似文献
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给出了基于演化计算的硬件自动设计方法的实现过程,分析了该方法的特点、存在的问题及解决方案,讨论了演化计算在该应用领域的发展方向。 相似文献
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硬件进化中演化算法的研究及应用 总被引:1,自引:1,他引:1
详细介绍了硬件进化的概念,硬件进化的原理与实现思想,遗传算法与蚁群算法动态融合的基本原理,融合后算法中遗传算法及蚁群算法规则.融合过程中遗传算法与蚁群算法动态衔接问题以及融合后的算法在硬件进化中的应用过程.最后,分析了通过该算法进化后硬件的进化应用前景. 相似文献
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利用遗传算法(GA)的群体搜索模式,在演化硬件(EHW)应用中根据其本身具有的并行性,采用并行算法提高演化速度。以Messy门模型为例,介绍了利用PVM(并行虚拟机)在演化硬件问题中提高计算速度的应用,并通过与串行算法的比较,得出了在演化硬件研究中采用并行处理的优势。 相似文献
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An evolutionary algorithm implemented in hardware is expected to operate much faster than the equivalent software implementation. However, this may not be true for slow fitness evaluation applications. This paper introduces a fast evolutionary algorithm (FEA) that does not evaluate all new individuals, thus operating faster for slow fitness evaluation applications. Results of a hardware implementation of this algorithm are presented that show the real time advantages of such systems for slow fitness evaluation applications. Results are presented for six optimisation functions and for image compression hardware. 相似文献
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David B. Fogel 《控制论与系统》2013,44(6):407-415
Evolutionary computation is a rapidly expanding field of research with a long history. Much of that history remains unknown to most practitioners and researchers. This two-part article offers a review of selected foundational efforts in evolutionary computation, with a focus on those that have not received commensurate attention. Part I presented an initial overview of the essential components of evolutionary algorithms followed by a review of early research in artificial life and modeling genetic systems. Here, Part II reviews seminal results in evolving programs and evolvable hardware. Comments on theoretical developments and future developments conclude Part II. 相似文献
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基于多目标自适应遗传算法的逻辑电路门级进化方法 总被引:4,自引:1,他引:4
提出一种改进的遗传算法,通过网表级编码、多目标评估和遗传参数自适应等措施,可依据多个设计目标,以较少的运算量自动生成和优化逻辑电路.在数字乘法器、偶校验器等进化设计实验中,通过比手工设计和同类方法更优的新奇设计结果展示了该方法的有效性和先进性. 相似文献
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An Improved Evolvable Oscillator and Basis Function Set for Control of an Insect-Scale Flapping-Wing Micro Air Vehicle
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This paper introduces an improved evolvable and adaptive hardware oscillator design capable of supporting adaptation intended to restore control precision in damaged or imperfectly manufactured insect-scale flapping-wing micro air vehicles. It will also present preliminary experimental results demonstrating that previously used basis function sets may have been too large and that significantly improved learning times may be achieved by judiciously culling the oscillator search space. The paper will conclude with a discussion of the application of this adaptive, evolvable oscillator to full vehicle control as well as the consideration of longer term goals and requirements. 相似文献
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电路的在线进化设计是通过演化的方式实现电路的功能,可视为进化算法与可编程逻辑器件的结合;针对制约进化设计能力的主要“瓶颈”一染色体过长导致进化设计受限,文中一方面结合FPGA中的逻辑资源,采用基于LUT(查找表)逻辑功能与连线的分段编码方案,降低染色体长度,另一方面,采用了改进了的进化策略(ES),以克服算法的早熟并加快收敛速度;文中以两位乘法器电路的在线进化作为实例,给出了具体的实现方法。 相似文献
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David B. Fogel 《控制论与系统》2013,44(5):343-358
Evolutionary computation is a rapidly expanding field of research with a long history. Much of that history remains unknown to most practitioners and researchers. This two-part article offers a review of selected foundational efforts in evolutionary computation, with focus on those that have not received commensurate attention. Part I presents a brief initial overview of the essential components of evolutionary algorithms followed by a review of early research in artificial life. Part II reviews seminal results in evolving programs and evolvable hardware. Comments on theoretical developments and future developments conclude Part II. 相似文献
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Evolvable Hardware in Evolutionary Robotics 总被引:1,自引:0,他引:1
In recent decades the research on Evolutionary Robotics (ER) has developed rapidly. This direction is primarily concerned with the use of evolutionary computing techniques in the design of intelligent and adaptive controllers for robots. Meanwhile, much attention has been paid to a new set of integrated circuits named Evolvable Hardware (EHW), which is capable of reconfiguring its architectures unlimited time based on artificial evolution techniques. This paper surveys the application of evolvable hardware in evolutionary robotics. The evolvable hardware is an emerging research field concerning the development of evolvable robot controllers at the hardware level to adapt to dynamic changes in environments. The context of evolvable hardware and evolutionary robotics is reviewed, and a few representative experiments in the field of robotic hardware evolution are presented. As an alternative to conventional robotic controller designs, the potentialities and limitations of the EHW-based robotic system are discussed and summarized. 相似文献