Reliability analysis of imperfect coverage systems with a shared warm standby

Performance Analysis of a Repairable Robot Safety System with Standby, Imperfect Coverage and Reboot Delay

The present study deals with a robot safety system composed of standby robot units and inbuilt safety unit. When the main operative unit fails, it is replaced by the standby robot unit available in the system. The concept of reboot delay is also incorporated in this study according to which the robot unit is rebooted if it is not successfully recovered. The recovery and reboot times of failed u...

Reliability analysis of a warm standby repairable system with two cases of imperfect switching mechanism

Fuzzy Reliability Evaluation of a Repairable System with Imperfect Coverage, Reboot and Common-cause Shock Failure

In the present investigation, we deal with the reliability characteristics of a repairable system consisting of two independent operating units, by incorporating the coverage factor. The probability of the successful detection, location and recovery from a failure is known as the coverage probability. The reboot delay and common cause shock failure are also considered. The times to failure of t...

Reliability of Standby Systems

Reliability theory bases on the concept of boolean components, i.e. of up, operating or down, failed components. But often such assumption is not adequate for modeling specific behaviors of components, units, subsystems and systems. It cannot catch, for example, different operating conditions of components due to dependencies on other components or environment variations. Aim of this paper is t...

Dependability Analysis of Hierarchical Systems with Modular Imperfect Coverage

We consider the dependability analysis of hierarchical fault tolerant computer based systems in this paper. The hierarchical nature of the system aids in fault coverage: if an undetected error escapes from one level of the system, it may be covered or tolerated at a higher level. A fault that remains uncovered through all levels of the hierarchy, and thus appears at the output, causes immediate...