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Issue No.01 - January (1980 vol.6)
pp: 53-64
H. Takahashi , Department of Mathematics, College of Science and Engineering, Nihon University
This paper proposes a control-oriented Algol-like nonprocedural language called Condor. Automatic controller theory, in company with computer science, underlies many industrial fields. Sequential control is especially important. So far, sequential-controller description methods have by and large been lmited to graphic ones, which are unreadable in the case of large controllers. A higher-level linguistic approach has been considered unlikely. This paper proposes a language widely suitable for controller architecture description. A controller, in its nature, consists of many subsystems which work in a parallel manner, interacting with one another. This paper deems that a basic component is not a process, but a response. A controller is considered to be a responding system in which every reactor works together, having a relation and communication to one another. A Condor program is a role assignment list for the reactors; it is Algol-like and nonprocedural. All the statements work at all times, interacting with one another.
sequential control, Automatic control, automation, control system description language, hierarchy, logic system design automation, nonprocedural language, parallel action, programmable logic controller, relay circuit
H. Takahashi, "An Automatic-Controller Description Language", IEEE Transactions on Software Engineering, vol.6, no. 1, pp. 53-64, January 1980, doi:10.1109/TSE.1980.230463
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