Second International Symposium on Autonomous Decentralized Systems (ISADS'95)
Widely-Distributed Train-Traffic Computer Control System and Its Step-by-Step Construction
Phoenix, Arizona, USA
April 25-April 27
ISBN: 0-8186-7087-8
In a large-scale mission-critical real-time control system, such as the Tokyo metropolitan-area train-traffic system, it is very difficult to construct the entire system at once. Moreover economic considerations makes year- by-year investment inevitable for developing the system. The new Tokyo metropolitan-area train-traffic computer control system, supplying service to 19 train lines, 300 stations and 6,200 trains per day has been constructed step-by-step over 8 years without halting train operations. Here the computer system is required to be expandable on-line, during system operation and without disrupting already constructed subsystems. To enable testing during system operation, an autonomous decentralized on-line expansion technique is proposed. Then the effectiveness of the technique is demonstrated in a real system.
Index Terms:
object-oriented programming; object-oriented languages; specification languages; formal specification; parallel programming; interactive systems; SF specification language; agent specification; object paradigm; distributed self initiating agents; functional requirements; agent systems; coherent description; self initiation; traditional software engineering; interactive systems development; agent centered paradigm; distributed environments
Citation:
Fumio Kitahara, Takao Iwamoto, Kuniyuki Kikuchi, Kazunori Fujiwara, Haruhito Kawashima, Hiroshi Yarnamoto, "Widely-Distributed Train-Traffic Computer Control System and Its Step-by-Step Construction," isads, pp.0093, Second International Symposium on Autonomous Decentralized Systems (ISADS'95), 1995