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论文类型：期刊论文

发表时间：2011-01-01

发表刊物：INFORMATION TECHNOLOGY AND CONTROL

收录刊物：Scopus、SCIE

卷号：40

期号：1

页面范围：29-40

ISSN号：1392-124X

关键字：fault-tolerance; access control; cyber-physical systems; emergency management

摘要：Access control is an issue of paramount importance in cyber-physical systems (CPS). In this paper, an access control scheme, namely FEAC, is presented for CPS. FEAC cannot only provide the ability to control access to data in normal situations, but also adaptively assign emergency-role and permissions to specific subject; and inform subjects without explicit access requests to handle emergency situations in a proactive manner. In FEAC, emergency-group and emergency-dependency are introduced. Emergencies are processed in sequence within the group and in parallel among groups. A priority and dependency model called PD-AGM is used to select optimal response-action execution path aiming to eliminate all emergencies that occurred within the system. Fault-tolerant access control policies are used to address failure in emergency management. A case study of the hospital medical care application shows the effectiveness of FEAC.