Probabilistic Analysis of a Robot System with Redundant Safety Units and Common-Cause Failures
نویسندگان
چکیده
منابع مشابه
Probabilistic Analysis of a Robot System with Redundant Safety Units and Common-Cause Failures
Abstract: This paper presents reliability and availability analyses of a model representing a system having one robot and n-redundant safety units with common-cause failures. At least k safety units must function successfully for the robot system success. The robot and other failure rates and the partially failed system repair rates are assumed constant and the failed robot-safety system repair...
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In many cases, redundant systems are beset by both independent and dependent failures. Ignoring dependent variables in MTBF evaluation of redundant systems hastens the occurrence of failure, causing it to take place before the expected time, hence decreasing safety and creating irreversible damages. Common cause failure (CCF) and cascading failure are two varieties of dependent failures, both l...
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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...
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ژورنال
عنوان ژورنال: Intelligent Information Management
سال: 2009
ISSN: 2150-8194,2150-8208
DOI: 10.4236/iim.2009.13022