Conferences related to Fail-safe Systems

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2021 26th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA )

ETFA focus is on the latest developments and new technologies in the field of industrial and factory automation. The conference aims to exchange ideas with both industry leaders and a variety of experienced researchers, developers, and practitioners from several industries, research institutes, and academia


ICC 2021 - IEEE International Conference on Communications

IEEE ICC is one of the two flagship IEEE conferences in the field of communications; Montreal is to host this conference in 2021. Each annual IEEE ICC conference typically attracts approximately 1,500-2,000 attendees, and will present over 1,000 research works over its duration. As well as being an opportunity to share pioneering research ideas and developments, the conference is also an excellent networking and publicity event, giving the opportunity for businesses and clients to link together, and presenting the scope for companies to publicize themselves and their products among the leaders of communications industries from all over the world.


2020 IEEE 29th International Symposium on Industrial Electronics (ISIE)

ISIE focuses on advancements in knowledge, new methods, and technologies relevant to industrial electronics, along with their applications and future developments.


2020 IEEE International Conference on Industrial Engineering and Engineering Management (IEEM)

All topics related to engineering and technology management, including applicable analytical methods and economical/social/human issues to be considered in making engineering decisions.


2020 IEEE International Conference on Robotics and Automation (ICRA)

The International Conference on Robotics and Automation (ICRA) is the IEEE Robotics and Automation Society’s biggest conference and one of the leading international forums for robotics researchers to present their work.


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Periodicals related to Fail-safe Systems

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Automatic Control, IEEE Transactions on

The theory, design and application of Control Systems. It shall encompass components, and the integration of these components, as are necessary for the construction of such systems. The word `systems' as used herein shall be interpreted to include physical, biological, organizational and other entities and combinations thereof, which can be represented through a mathematical symbolism. The Field of Interest: shall ...


Biomedical Circuits and Systems, IEEE Transactions on

The Transactions on Biomedical Circuits and Systems addresses areas at the crossroads of Circuits and Systems and Life Sciences. The main emphasis is on microelectronic issues in a wide range of applications found in life sciences, physical sciences and engineering. The primary goal of the journal is to bridge the unique scientific and technical activities of the Circuits and Systems ...


Communications Magazine, IEEE

IEEE Communications Magazine was the number three most-cited journal in telecommunications and the number eighteen cited journal in electrical and electronics engineering in 2004, according to the annual Journal Citation Report (2004 edition) published by the Institute for Scientific Information. Read more at http://www.ieee.org/products/citations.html. This magazine covers all areas of communications such as lightwave telecommunications, high-speed data communications, personal communications ...


Computer

Computer, the flagship publication of the IEEE Computer Society, publishes peer-reviewed technical content that covers all aspects of computer science, computer engineering, technology, and applications. Computer is a resource that practitioners, researchers, and managers can rely on to provide timely information about current research developments, trends, best practices, and changes in the profession.


Computers, IEEE Transactions on

Design and analysis of algorithms, computer systems, and digital networks; methods for specifying, measuring, and modeling the performance of computers and computer systems; design of computer components, such as arithmetic units, data storage devices, and interface devices; design of reliable and testable digital devices and systems; computer networks and distributed computer systems; new computer organizations and architectures; applications of VLSI ...


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Most published Xplore authors for Fail-safe Systems

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Xplore Articles related to Fail-safe Systems

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A generalized theory of fail-safe systems

[1989] The Nineteenth International Symposium on Fault-Tolerant Computing. Digest of Papers, 1989

The authors generalize the concept of fail-safe systems and introduce the concept of strongly fail-safe systems. As an application, they present an interface that can be implemented in MOS technologies. It transforms the outputs of self-checking systems into signals adequate to drive electromechanical actuators and such that the whole system (self-checking circuit and interface) is strongly fail-safe.<<ETX>>


Concerning the opportunity of fail-safe systems development

2017 International Conference on Industrial Engineering, Applications and Manufacturing (ICIEAM), 2017

The article deals with the grounding of the development of fail-safe electric energy supply systems in industrial factories. The assessment basis consists of the probable parameters of equipment fail-safe work. They include the distribution law of non-failure operation time, except for average parameters, showing equipment work and indicators which characterize its failures. It is the law that makes it possible ...


Towards evolvable hardware and genetic algorithm operators to fail safe systems achievement

2018 IEEE 19th Latin-American Test Symposium (LATS), 2018

As systems grow in complexity and extension, the analysis and comprehension of their dynamics becomes proportionally harder, reducing their reliability [1]. Currently, the most common and effective way to deal with faults is through redundancy, although it presents no self-adaptability and is subject to the availability of resources. In this context, it is proposed the investigation and implementation of bio-inspired ...


Available fail-safe systems

Proceedings of the Sixth IEEE Computer Society Workshop on Future Trends of Distributed Computing Systems, 1997

Continuity of service and cost-effectiveness are adding new challenges to life critical systems over and above the underlying safety concerns. The introduction of redundant components is a necessary condition for increasing the overall system availability with respect to physical component failures. Here we consider redundancy by means of replicating fail-safe components in a distributed real-time system for railway applications. In ...


The research and application of fail-safe technologies in rail transit train operation control system

2014 10th International Conference on Reliability, Maintainability and Safety (ICRMS), 2014

The train operation control system in the rail transit has extremely high requirements in terms of reliability and functional safety due to its nature of constant operation, which is often required to achieve the Safety Integrity Level (SIL) 3 or 4. It was concluded in the article that the safety integrity is determined by the systematic failures and random failures ...


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Educational Resources on Fail-safe Systems

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IEEE-USA E-Books

  • A generalized theory of fail-safe systems

    The authors generalize the concept of fail-safe systems and introduce the concept of strongly fail-safe systems. As an application, they present an interface that can be implemented in MOS technologies. It transforms the outputs of self-checking systems into signals adequate to drive electromechanical actuators and such that the whole system (self-checking circuit and interface) is strongly fail-safe.<<ETX>>

  • Concerning the opportunity of fail-safe systems development

    The article deals with the grounding of the development of fail-safe electric energy supply systems in industrial factories. The assessment basis consists of the probable parameters of equipment fail-safe work. They include the distribution law of non-failure operation time, except for average parameters, showing equipment work and indicators which characterize its failures. It is the law that makes it possible to establish the adequate level of probability of equipment reliability due to which the system works without failures. To perform the same functions in production, process machines and different types (models) of equipment can be used. Naturally, they have different productivity, power loading, reliability, cost, and supply of spare parts; they require operating personnel of different qualification levels, etc. Machine and equipment application should meet the requirements of correlation and cooperation with allied equipment; being relatively inexpensive, it should have a relevant reliability level. Reasonability of ensuring of a necessary system reliability should be based on financial calculations taking into account technical specifications and equipment reliability characteristics.

  • Towards evolvable hardware and genetic algorithm operators to fail safe systems achievement

    As systems grow in complexity and extension, the analysis and comprehension of their dynamics becomes proportionally harder, reducing their reliability [1]. Currently, the most common and effective way to deal with faults is through redundancy, although it presents no self-adaptability and is subject to the availability of resources. In this context, it is proposed the investigation and implementation of bio-inspired hardware solutions. It is possible to find systems optimal configurations through the concept of evolution. Therefore, the purpose of this research is to reproduce a novel architecture [2] and analyze the Evolvable Hardware behavior in a FPGA with the capability to self- heal through the search and selection of new optimal hardware configurations assisted by a Genetic Algorithm in order to recover from a hardware service failure caused by component faults [3]. Thereby, it was implemented as a proof of concept a BCD decoder design, which presented a 100% output accuracy and was able to self-adapt, repairing failures caused by simulated faults in up to 35.9% of the cells. The recovery time is affected by the hardware architecture and the evolution operators. Finally, this research concludes that evolvable hardware is a promising alternative for autonomous design and fail-safe digital systems, although it still has potential for improvement and has limited scalability.

  • Available fail-safe systems

    Continuity of service and cost-effectiveness are adding new challenges to life critical systems over and above the underlying safety concerns. The introduction of redundant components is a necessary condition for increasing the overall system availability with respect to physical component failures. Here we consider redundancy by means of replicating fail-safe components in a distributed real-time system for railway applications. In such a system, some functions cannot tolerate even a brief service interruption. These functions have to be replicated using active redundancy, and their outputs must be consolidated with the goal that the failure of one component has no effect on the delivered service. We formally investigate conditions for preserving safety properties of fail-safe components when replicating them using active redundancy. We focus our analysis on duplex computers with two fail-safe units. Given some safety constraints, we show that inconsistency of replicated units can lead to safety degradation even if each replicated component (taken individually) satisfies the given safety constraints. Two solutions are studied: masking and detection of state or context inconsistency. The former leads to requirements on the output consolidation function and the latter to requirements on the redundancy management mechanisms.

  • The research and application of fail-safe technologies in rail transit train operation control system

    The train operation control system in the rail transit has extremely high requirements in terms of reliability and functional safety due to its nature of constant operation, which is often required to achieve the Safety Integrity Level (SIL) 3 or 4. It was concluded in the article that the safety integrity is determined by the systematic failures and random failures of the control system, in which the former will be mitigated by factors of quality management, safety management, technical safety conditions, and the latter requires the achievement of safety target and technical safety conditions to be controlled. The fail-safe concept is the key design principle in the development of the train operation control system. This article summarized the major methods to control the effects of single random faults: Composite Fail Safe, Reactive Fail Safe, and Inherent Fail Safe. The target and computing method of quantified hazardous failure rate is presented for different kinds of control systems, especially for the Composite Fail Safe systems with redundant component, in which a couple of Boolean models are feasible to be applied. The system architectures with 2oo3, as the example, were analyzed. To mitigate the effects of some of multiple faults, the Common-Cause Failure (CCF) needs to be analyzed and the system design should ensure that a multiple failure is not the result of a common cause failure and could only occur by means of a combination of signal random faults. The CCF effect needs to be evaluated especially in the Composite Fail Safe systems, in which β-factor method would be used for above estimation of the frequency of hazardous failure in this article. The detection of faults is one of key factors during fail-safe design to avoid the effects of single faults as well as the gradually accumulated effects of double or multiple faults in many cases. It turns into the issue of diagnostic methods and coverage of system elements. The diagnostic coverage of an element can be derived considering of the safe failures and hazardous failures. The actions following the detection/diagnosis, especially the retention of safety state, are required as well.

  • Synthesis of Fault Trees: An Example of Noncoherence

    The Lapp & Powers (L&P) fault-tree model of a nitric acid cooling process is explored to a greater level of depth than in the previous round-robin correspondence on the controversy over exclusive-or (XOR) gate G7 in the L&P fault tree. In this paper, the minimalized logic equations for success or failure of G7 are derived, and the subsystem reliability function is calculated. The subsystem reliability vs component reliability function is U-shaped; this is not an abnormality, but a result of the XOR failure logic. The overall system reliability vs component reliability function, however, is J-shaped. Some further comments are made on the relevance of this problem to the study of s-noncoherent and fail-safe systems.

  • The Fail-Safe Feature of the Lapp &amp; Powers Fault Tree

    In response to the Editor's suggestion, 3 states of the Lapp & Powers fault- tree model are distinguished, `good', `failed safe' and `failed unsafe'. Both the logical and the probability functions are given separately for both failed safe and good events as well as the probability calculations. A simplified 2-component example is also discussed to illustrate the relationship between XOR gates in fault trees and fail-safe systems and subsystems.

  • Safety of VLSI designs using VHDL

    This paper presents a methodology associated to a software tool to generate fail-safe VHDL synthesizable descriptions from Petri net or state diagrams. With this philosophy of automatically providing safety to VLSI systems design in VHDL, designers do not have to include the error detection system because it is going to be added automatically in the design. The method is explained as a group of sequential steps that transform a system into a fail-safe one. The tool uses a graphical environment to define the Petri net or state diagram. VHDL was chosen because is a standard widely supported by synthesis tools. The implementation of the circuit, which is valid either for programmable logic or ASICs, is done by other tools that support the VHDL standard. Following this methodology, three design parameters appear: size (consumption), speed, and safety level. Usually, every tool presents only optimization by speed and size. The proposed tool is fully implemented. VHDL code is synthesizable and experiments were made comparing unsafe and fail-safe systems in relation to their defining characteristics. Adding safety obviously supposes a heavy penalty in area occupied by the circuit. Future work should study the combination of other safety mechanisms, including the possibility of establishing a flexible level of safety.

  • A GENERALIZED THEORY OF FAIL+SAFE SYSTEMS

    None

  • Reliable fail-safe systems

    A fault-tolerant scheme is presented which is based on two copies of a self- checking module and a fail-safe interface. The interface preserves the modules' safety and becomes fault-tolerant by embedding appropriate self- testing capabilities. We show that, for self-checking module area overheads not exceeding the theoretical upper bound of /spl radic/3-1 (73%), our fault- tolerant scheme is more reliable than the triplicated modular redundant structure.<<ETX>>



Standards related to Fail-safe Systems

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errata


IEEE Standard for Communications-Based Train Control (CBTC) Performance and Functional Requirements

Original Scope: This standard establishes a set of performance and functional requirements necessary for enhancing performance, availability, operations, and train protection using a CBTC System.---Revision: There is no change to the words of the scope. The revisions allow for driverless train operation, including automatic people movers.


IEEE Standard for Motor Vehicle Event Data Recorder (MVEDR)

Motor Vehicle Event Data Recorders (MVEDRs) collect, record, store and export data related to motor vehicle pre-defined events. This standard defines a protocol for MVEDR output data compatibility and export protocols of MVEDR data elements. This standard does not prescribe which specific data elements shall be recorded, or how the data are to be collected, recorded and stored. It is ...


IEEE Standard for the Functioning of and Interfaces Among Propulsion, Friction Brake, and Train-borne Master Control on Rail Rapid Transit Vehicles

This project will develop standards for the interface functionality among propulsion, friction brake and train-borne master constrol. The standards will encompass performance parameters, communication methods and the means for measurement and verification of performance. Third party systems performing functions traditionally carried out in one of the above systems will also be covered.



Jobs related to Fail-safe Systems

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