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一种新型仿生硬件容错系统——胚胎电子系统 总被引:4,自引:0,他引:4
本文介绍了一种从自然界获取灵感的新型容错设计方法--胚胎电子系统设计.它的容错原理是根据在生物细胞内部冗余结构里发现的自修复机制来实现的.胚胎电子系统,就是基于构造一个具有自检测和自修复能力的处理单元阵列的仿生硬件容错系统.本文阐述了这种容错方法的设计原理,介绍了该系统的基本结构,并通过一个设计实例的介绍来验证该方法的有效性. 相似文献
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矩阵乘法是数值分析领域中一种十分常用的基本运算,被广泛应用于模式识别、图像和信号处理。由于矩阵运算具有局部性、一致性的特点,特别适合用二维网孔并行计算机来实现。文章讨论了基于二维网孔互连网络的矩阵乘并行算法的实现,首先给出了一种正方网孔处理机阵列的并行算法,然后将其推广到长方网孔处理机阵列中。最后通过在LSMPP计算机的应用,证明算法是可行的、有效的。 相似文献
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图形编码阵列逻辑是数字光计算中关键的结构的一种。这种结构把非线性逻辑运算分解成非线性编码和线性运算两部份。我们已经证实这种方法对二变量输入的二值图形,通过光学三重积,可以一次实现16种阵 相似文献
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隐层神经元冗余是提高神经网络容错性的一个有效的方法,在神经网络分类器的容错设计中,这一方法得到了良好的效果,对单故障可以做到完全容错.但是这一应用仅仅只能应用于输出层为硬限幅函数的前向网络,并且只证明了对网络中单故障有效.在实际应用中,网络中的各个节点和权值的故障往往是普遍存在的,因此本文提出了一种隐层冗余结构,对普遍故障存在下隐层神经元冗余容错方法做以评估,得出的结论是应用这种隐层神经元冗余结构可以减小网络的全局故障率;并提出了针对一般前向神经网络的实用的隐层神经元容错方法,这种方法可以有效地提高网络在普遍故障下的容错能力. 相似文献
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提出了一种基于空间锥角降维的二维DOA稀疏分解估计新方法,解决了利用稀疏表示方法进行二维DOA估计时计算复杂度大的问题.根据L阵列的结构特性,引入空间锥角表示信号的二维DOA信息,构造空间锥角冗余字典,通过稀疏正则化求解实现空间锥角的估计,然后利用求解得到功率实现L阵列中两个子阵之间的空间锥角配对,从而达到对多来波的二维DOA估计的目的,其避免了方位角和俯仰角组合而造成冗余字典庞大的问题,极大地减少了稀疏分解的计算量.仿真和实测数据结果均验证了该方法的有效性和优越性,为进一步的工程应用奠定了基础. 相似文献
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三维芯片(3D-IC)通过硅通孔(TSV)技术来实现电路的垂直互连,延续了摩尔定律,但在制造、绑定等过程中,TSV容易引入各类缺陷。添加冗余TSV是解决该问题的有效方法之一,但TSV面积开销大、制造成本高。提出一种基于时分复用(TDMA)的TSV蜂窝结构容错设计方案,它基于时间对信号TSV进行复用。实验结果表明,与一维链式TDMA结构相比,蜂窝TDMA结构提高了30%的故障覆盖率,并且故障覆盖率随着蜂窝阵列的扩展持续提升。在64TSV阵列中,与一维TDMA结构相比,蜂窝拓扑结构的面积开销降低了10.4%。 相似文献
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提出了一种改进的奇偶阵列计算结构的运动估计器架构,该运动估计器利用了二维数据复用并能够实现全搜索法。设计了运动估计器的状态机控制逻辑,在其控制下,运动估计器的处理单元达到了100%的利用率。本运动估计器实现了高速、并行的运算,从而可以应用在高清视频的实时后处理等场合。 相似文献
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《Industrial Electronics, IEEE Transactions on》2008,55(12):4299-4308
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Nucleus Plus是为实时嵌入式应用而设计的一个抢先式多任务操作系统,其95%的代码使用ANSIC写成,非常便于移植并能够支持大多数类型的处理器。本文根据容错管理软件的设计思想,提出了一种Nucleus Plus实时操作系统容错功能扩充方法,并在某航天三模冗余计算机平台上进行了验证。 相似文献
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In this paper, we propose a new architecture for multicast ATM switches with fault tolerant capability based on the Clos–Knockout switch. In the new architecture, each stage has one more redundant switch module. If one switch module is faulty, the redundant module would replace the faulty one. On the other hand, under the fault‐free condition, the redundant modules in the second and third stages will provide additional alternative internal paths, and hence improve the performance. The performance analysis shows that the cell loss probability is lower than the original architecture when all modules are fault free, and the reliability of the original architecture is improved. Copyright © 2002 John Wiley & Sons, Ltd. 相似文献
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A Clos-based fault tolerant multicast ATM switch is proposed in which each stage has one more redundant switch module. If one switch module is faulty, the redundant module replaces the faulty module. On the other hand, even under fault-free conditions, the redundant modules in the second and third stages will provide additional alternative internal paths, and hence improve the performance 相似文献
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Che Wun Chiou 《Electronics letters》2002,38(14):688-689
Based on Lee-Lu-Lee's array multipliers and the RESO method, a concurrent error detection scheme in array multipliers for GF(2m ) fields is presented and only one clock cycle is added. The fault tolerant capability in such array multipliers is also included and only two extra clock cycles are required 相似文献
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Methods by which bit level systolic array chips can be made fault tolerant are discussed briefly. Using a simple analysis based on both Poisson and Bose-Einstein statistics we demonstrate that such techniques can be used to obtain significant yield enhancement. Alternatively, the dimensions of an array can be increased considerably for the same initial (nonfault tolerant) chip yield. 相似文献
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The maintainability, reliability, and availability of a computer system are closely bonded to insure continuing service of a system. The ability of a system to tolerate failures or faults while operating is a principal requirement of a fault tolerant system. A fault tolerant system's design must incorporate considerations for maintenance and reliability in order to provide its ultimate requirement-available operation. These factors are considered in the design philosophy presented in this paper, identified as FAULTPROOF. FAULTPROOF design incorporates redundancy, reliability, maintainability, and adaptability to augment normally accepted fault tolerant design. The design approach described utilizes a hierarchical interconnection mechanism, Intelligent Networked Partitioning, to isolate faulted components. 相似文献
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Algorithm transformation methods to reduce the overhead of software-based fault tolerance techniques
José Rodrigo Azambuja Gustavo Brown Fernanda Lima Kastensmidt Luigi Carro 《Microelectronics Reliability》2014
This paper introduces a framework that tackles the costs in area and energy consumed by methodologies like spatial or temporal redundancy with a different approach: given an algorithm, we find a transformation in which part of the computation involved is transformed into memory accesses. The precomputed data stored in memory can be protected then by applying traditional and well established ECC algorithms to provide fault tolerant hardware designs. At the same time, the transformation increases the performance of the system by reducing its execution time, which is then used by customized software-based fault tolerant techniques to protect the system without any degradation when compared to its original form. Application of this technique to key algorithms in a MP3 player, combined with a fault injection campaign, show that this approach increases fault tolerance up to 92%, without any performance degradation. 相似文献
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A distributed fault detection scheme for modular and reconfigurable robots (MRRs) with joint torque sensing is proposed in this paper. With the proposed scheme, the joint torque command is filtered and compared with a filtered torque estimate derived from the nonlinear dynamic model of MRR with joint torque sensing. Common joint actuator faults are considered with fault detection being performed independently for each joint module. The proposed fault detection scheme for each module does not require motion states of any other module making it an ideal modular approach for fault detection of modular robots. Experimental results have confirmed the effectiveness of the proposed fault detection scheme. 相似文献