Add to ORKGThe study of a comparative analysis of distinct multiplex and fault-tolerant configurations for a PLC-based safety system from a reliability point of view is presented. It considers simplex, duplex and fault-tolerant triple redundancy configurations. The standby unit in case of a duplex configuration has a failure rate which is k times the failure rate of the standby unit, the value of k varying from 0 to 1. For distinct values of MTTR and MTTF of the main unit, MTBF and availability for these configurations are calculated. The effect of duplexing only the PLC module or only the sensors and the actuators module, on the MTBF of the configuration, is also presented. The results are summarized and merits and demerits of various configurations ...
Having defined the parameters necessary to the determination of a system, the author considers five ...
The need for safety is vital in many systems, e.g. an industrial process in which a non-detected fai...
In order to gain an improvement of safety or availability measures of the safety-relevant control sy...
This paper presents the evaluation technique of the mean time to failure (MTTF) and reliability corr...
Extension of the PLC application possibilities is closely related to increase of reliability and saf...
Hardware redundant fault-tolerant systems and the different design approaches are discussed. The rel...
Computer based systems, which are devoted to control critical functions, may incur in safety and dep...
Acknowledgments The authors would like to thank the anonymous reviewers for their constructive comme...
In safety critical applications of advanced mixed signal technology, such as in automotive systems, ...
There is a need for better integration of the fault tolerant and the control designs for safety crit...
Nowadays, the programmable logic controllers (PLCs) are often in the role of control systems. They ...
Incessantly extending possibilities of safety PLCs allows usage not only in process level control bu...
Safety instrumented systems (SISs) are of prime importance to the process industry to avoid catastro...
Safety Instrumented Systems (SIS) have to be assessed in order to determine the probability of dange...
This master thesis studies the effects of systematic faults in the development phase of a safety-ins...
Having defined the parameters necessary to the determination of a system, the author considers five ...
The need for safety is vital in many systems, e.g. an industrial process in which a non-detected fai...
In order to gain an improvement of safety or availability measures of the safety-relevant control sy...
This paper presents the evaluation technique of the mean time to failure (MTTF) and reliability corr...
Extension of the PLC application possibilities is closely related to increase of reliability and saf...
Hardware redundant fault-tolerant systems and the different design approaches are discussed. The rel...
Computer based systems, which are devoted to control critical functions, may incur in safety and dep...
Acknowledgments The authors would like to thank the anonymous reviewers for their constructive comme...
In safety critical applications of advanced mixed signal technology, such as in automotive systems, ...
There is a need for better integration of the fault tolerant and the control designs for safety crit...
Nowadays, the programmable logic controllers (PLCs) are often in the role of control systems. They ...
Incessantly extending possibilities of safety PLCs allows usage not only in process level control bu...
Safety instrumented systems (SISs) are of prime importance to the process industry to avoid catastro...
Safety Instrumented Systems (SIS) have to be assessed in order to determine the probability of dange...
This master thesis studies the effects of systematic faults in the development phase of a safety-ins...
Having defined the parameters necessary to the determination of a system, the author considers five ...
The need for safety is vital in many systems, e.g. an industrial process in which a non-detected fai...
In order to gain an improvement of safety or availability measures of the safety-relevant control sy...