New System Model Based on Autonomous Decentralized System for Highly Productive Processing Equipment

Takeiki AIZONO  Masahiro OHASHI  Makoto KOGURE  Tohru KIKUNO  

IEICE TRANSACTIONS on Communications   Vol.E83-B   No.5   pp.916-924
Publication Date: 2000/05/25
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (IEICE/IEEE Joint Special Issue on Autonomous Decentralized Systems)
Category: Communication and Computer Architecture/Assurance Systems
ADS (Autonomous Decentralized System),  high assurance,  high productivity,  processing equipment,  intelligent device,  

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High accuracy, high reliability, and high performance have to be simultaneously satisfied to achieve high productivity of the latest processing equipment. High flexibility is also required because many options are available and processing equipment is modified frequently. A high-assurance-system (HAS) model for processing equipment has been developed according to the concept of an Autonomous Decentralized System (ADS). Heterogeneous devices, that have same function and diverse qualities, are utilized to assure the different requirements of high accuracy, high reliability, and high performance simultaneously. The Data Property (DP) and Assurance Manager (AM) are proposed in this model. Different accuracy, reliability, and performance indices characterize each device, and the DP describes the differences of the properties of the data transmitted from these heterogeneous devices. The AM assures not only high reliability but also high performance and high accuracy by utilizing the heterogeneity of data described by the DP. The HAS model was applied to a device-level system used in processing equipment, and its effectiveness was verified by simulating a pressure-control system.