Abstract
Large, mission-critical systems are required to satisfy, as nearly as possible, a 100% availability requirement. This imposes an on-line property, which includes on-line expansion for constructing a system step-by-step without stopping the system’s operation, on-line maintenance for testing and repairing during the system operation, and fault-tolerance. Autonomous Decentralized Systems (ADS) have been proposed for achieving the on-line property, and its technologies have been effectively applied in various fields including transportation, factory automation, information service and so on.
ADS are realized by the Data Field (DF) architecture, where data is broadcast with the content code corresponding to the data attached. Each subsystem selects its data depending on the content code instead of the address. Subsystems independently start their execution after all of the necessary data is received. Based on the DF architecture, the on-line property is realized.
One of the applications of the ADS for the Tokyo Metropolitan-Area Train Transport Operation Control System is discussed here to show that the on-line property and the heterogeneous requirements for real-time control and high-throughput information services are achieved.
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© 2001 Springer Science+Business Media New York
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Mori, K. (2001). Autonomous Decentralized Systems Technologies and Their Application to a Train Transport Operation System. In: Winter, V.L., Bhattacharya, S. (eds) High Integrity Software. The Kluwer International Series in Engineering and Computer Science, vol 577. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-1391-9_5
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DOI: https://doi.org/10.1007/978-1-4615-1391-9_5
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