A NEW PROBABILISTIC APPROACH FOR ESTIMATING FAULT DETECTION PROBABILITY  

作　　者：丁瑾 胡健栋 

机构地区：[1]Beijing University of Posts and Telecommunications, Beijing 100088

出　　处：《Journal of Electronics(China)》1994年第4期309-314,共6页电子科学学刊（英文版）

基　　金：Supported by the National Science Foundation of China;the Young Teacher Foundation of the Ministry of Posts and Telecommunications of China

摘　　要：A new approach to calculate fault detection probabilities is presented. Fault-free simulation is used in the approach. The quantities of controllability and observability are defined as probabilities of controlling and observing the nodes in the circuit. The probability distribution of random signals on the circuit nodes is analyzed, and it is proved that controllability is in normal distribution. Thus the unbiasing estimation of the fault detection probability can be obtained. According to the concept of observability, we deal with the fan-out nodes. The fault coverages for actual circuits obtained from this approach agree favorably with the fault simulation results.A new approach to calculate fault detection probabilities is presented. Fault-free simulation is used in the approach. The quantities of controllability and observability are defined as probabilities of controlling and observing the nodes in the circuit. The probability distribution of random signals on the circuit nodes is analyzed, and it is proved that controllability is in normal distribution. Thus the unbiasing estimation of the fault detection probability can be obtained. According to the concept of observability, we deal with the fan-out nodes. The fault coverages for actual circuits obtained from this approach agree favorably with the fault simulation results.

关 键 词：PROBABILISTIC estimation CONTROLLABILITY OBSERVABILITY FAULT detection PROBABILITY FAULT coverage. 

分 类 号：TN710[电子电信—电路与系统]