静电放电损伤自修复数字电路模型的建立与优化  

Construction and Improvement of Self-repairing Digital Circuit Model for Electrostatic Discharge Damage

作　　者：常小龙[1] 刘尚合[1] 满梦华[1] 李川涛[1] 褚杰[1] 

机构地区：[1]军械工程学院静电与电磁防护研究所,石家庄050003

出　　处：《高电压技术》2012年第9期2329-2335,共7页High Voltage Engineering

基　　金：国家自然科学基金专项基金(10927506)~~

摘　　要：为了使数字电路在产生故障失效后实现功能自动恢复,提高电路可靠性,基于演化硬件(EHW)原理建立了自修复数字电路模型,该模型主要包括微处理器和重配置电路2个部分。利用自修复数字电路模型实现无刷直流电机控制系统中的换相电路,并对换相电路进行了故障注入修复实验。深入分析了自修复数字电路模型对电路演化修复的影响,通过引入关键函数对自修复数字电路模型进行了改进。实验结果表明,当注入故障单元数小于总单元数的50%时,改进后的自修复数字电路模型修复率达到100%。因此,该模型能够对部分故障进行成功修复,改进的自修复数字电路模型降低了电路生成时间,提高了电路修复概率和速度。In order to make the digital circuit to recover from faults and improve the reliability of digital circuit, a new self-repairing digital circuit model was proposed based on evolvable hardware（EHW）. The commutator of brushless direct current motor （BDCM） is implemented with the self-repairing digital circuit model which includes a microprocessor and a reconfigurable circuit. A fault injection-reparation experiment was carried out in the model, and the effect of the presented model on repairing ability of the designed circuit was analyzed. Then, we improved the model to enhance the probability of repairing circuit by introducing key functions. The results show that selfrepairing digital circuit model can always recover from fault when ratio of fault units to total units is smaller than 50%. Therefore, the given model can repair circuits successfully when it is subjected to certain faults. It is concluded that the improved model can reduce the time of self-repairing and can raise the probability and speed of the repair.

关 键 词：静电放电(ESD) 故障自修复 重配置电路 关键函数 无刷直流电机 故障修复率 

分 类 号：TN79[电子电信—电路与系统]