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Ch53-I044963.fm  Page 261  Tuesday, August 1, 2006  4:09 PM
                            Tuesday, August
                      Page 261
                                           4:09 PM
                                      1, 2006
            Ch53-I044963.fm
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                  ENHANCED       DISTRIBUTED-SIMULATION           USING ORiN     AND   HLA
                                                             2
                                              1
                                Toshihiro INUKAI , Hironori HIBINO , Yoshihiro  FUKUDA 3
                                     'FA  Engineering  Department, DENSO  WAVE Inc.,
                                     1-1  Showa-cho, Kariya-shi, Aichi 448-8661, Japan
                                         2
                                         Technical Research Institute of JSPMI,
                               1-1-12 Hachiman-cho, Higashikurume-shi, Tokyo 203-0042, Japan
                                        Faculty of Engineering, Hosei University,
                                   3-7-2 Kajino-cho, Koganei-shi, Tokyo  184-8584, Japan



                  ABSTRACT

                  Recent  manufacturing  industries  face  various  problems  caused  by  the  shorter  product  life  cycle,  the
                  higher demand for cost and quality, the more diversified  customer needs and  so on. In this situation, it
                  is very  important  to  shorten  the  lead-time  of  the  manufacturing  system  construction.  Therefore,  the
                  manufacturing  simulation has been watched with keen interest. However it is used  only  for the design
                  stage  of  the  construction.  It  is  not  useful  for  the  implementation  stage  because  of  a  proprietary
                  simulation  language,  a  complex  modelling,  etc.  Our  goal  is  to  develop  a  simulation  environment
                  which can be used easily throughout  the manufacturing  system  life  cycle. Our approach  is based  on a
                  distributed  architecture,  ORiN  and  HLA.  This  simulation  environment  is  composed  of  some
                  manufacturing  simulators, real FA devices in the factory,  its emulators and so on. By distributing them
                  into  one  simulation  environment  on  the  network,  a  large-scale  simulation  and  a  highly  accurate
                  simulation are achieved.



                  KEYWORDS
                  Manufacturing  systems, Distributed  simulation, Virtual  factory,  ORiN, HLA


                  INTRODUCTION

                  Manufacturing  simulations  are  very  important  to  shorten  the  lead-time  of  the  manufacturing  system
                  construction.  However,  the  manufacturing  system  simulator  is not useful  at  an implementation  stage.
                  One  of the  main  reasons  is that  the  simulation  models  which  are made  at the  design  stage  cannot  be
                  reused at the implementation stage. Therefore,  a virtual factory  at the design stage and a real factory at
                  the implementation  stage cannot be combined  efficiently  in the system development  process.

                  To  solve this problem,  current  simulators  are trying to integrate  many  functions  into themselves.  For
                  instance,  some  robot  simulators  have  the  function  to  convert  the  simulation  language  to  the
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