An object model of autonomous control processor and the message selection method

Aizono, T.; Kawano, Katsumi; Ohashi, M.; Kogure, M.

doi:10.1109/isads.1999.838365

Cited by 2 publications

(1 citation statement)

References 7 publications

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“…Software modules of some intelligent devices are developed by using object-oriented technology [4]. These intelligent devices with their software modules make up a distributed control system to control production lines [5][6][7]. These distributed control systems are replacing the conventional sequential control systems, and new methods for sequential control systems consisting of distributed system modules are required if we want to increase the productivity of industrial systems.…”

Section: Introductionmentioning

confidence: 99%

Intelligent scheduling based on start time adjustment for advanced sequential control systems

Aizono

Kikuno

Proceedings Third IEEE International Symposium on Object-Oriented Real-Time Distributed Computing (ISORC 2000) (Cat. No. PR0060

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Syst em s D evel opm ent Laborat ory, H i t achi Lt d. 1099 O zenj i , Asao, Kawasaki , 215-0013, Japan E-m ai l : ai zono@ sdl . hi t achi . co. j p **) D epart m ent of Inf orm at i cs and M at hem at i cal Sci ence, G raduat e School of Engi neeri ng Sci ence, O saka U ni versi t y 1-3 M achi kaneyam a-cho, Toyonaka, O saka 560-8531, Japan E-m ai l : ki kuno@ i cs. es. osaka-u. ac. j p A bstract H i gh product i vi t y i s required for i ndust rial system s t hat are t o produce l arge am ount s of l ow-pri ce product s. M ost i ndust rial system s are sequent i al l y cont roll ed because m at eri al s and part s are processed and const ruct ed step by step. A new m et hod of sequent i al cont rol i s needed t o i ncrease product i vi t y, and a new t echni que t o schedul e t he start t i m e of each process i s al so needed because of f requent adj ust m ent of product i on l i nes and t hei r equi pm ent . Int el l i gent devi ces such as i nt el l i gent sensors and act uat ors used in t he l at est i ndust rial system s have em bedded hi gh-perf orm ance processors and cont ai n soft ware m odul es. These devi ces cooperat e and cont rol processi ng robot s and product i on l i nes. Advanced sequent i al cont rol i s proposed f or sequent i al cont rol system s consi sti ng of di st ri but ed sof t ware m odul es. Processi ng t i m e can be m i ni m i zed and product i vi t y i ncreased by i nt el l i gent schedul i ng f or advanced sequent i al cont rol, and t hi s paper describes a new m et hod f or adj ust i ng t he st art i ng t i m es of product i on processes aut om at i cal l y. Thi s m ethod short ens t he t i m e m argi n and decreases t he t ot al processi ng t i m e. Thi s paper al so describes a Processi ng Fl ow D i agram t hat m akes i t easy t o adj ust t he st art i ng t i m e of each process. The ef f ect i veness of thi s int el l i gent schedul i ng and st art -t i m eadj ust m ent has been dem onst rated by usi ng t hem t o opt i m i ze t he operat i on of a system f or t est i ng di sk pl at es.

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Section: Introductionmentioning

confidence: 99%