02328nam a2200277 a 450000500170000000800410001703500150005810000260007324500810009926000570018030000260023749000280026350001980029150200580048952010430054765000350159065000150162565000210164070000350166170000470169670000460174371000700178971000650185981000600192485600660198420260818165952.0140613s2009    th ad  |||   |000 0 eng d  a.b121323051 aAziz, Muhammad Haris 10aNew model of an FMS using FTPN with demand variability and machine breakdown  aPathum Thani :bAsian Institute of Technology,c2009  a47 p. :bill., charts1 aThesis ;vno. ISE-09-31  aA research study submitted in partial fulfillment of the requirements for the  degree of Master of Engineering in  Industrial and Manufacturing Engineering, School of Engineering and Technology  aThesis (M.Eng.) - Asian Institute of Technology, 2009  aFuzzy Timed Petri Nets (FTPN) have been used to model  Flexible Manufacturing System  (FMS). Effects of demand variability and machine breakdown on the performance measures  of the system have been analyzed.  At first, closed loop and decision free, generic Petri Net (PN) model of an FMS is extended,  which has the properties of liveness  and boundednes s. Then  fuzzy  Membership  Functions  (MF)  of  demand  forecast,  cycle  time,  machine  availa bility,  Work  In  Process  (WIP)  and  demand  satisfaction  are  considered.  Then  the  effect s  of  demand  variability  and  machine  breakdown on cycle time, WIP, lead time, machine ut ilization and actual production of the  system are analyzed through fuzzy inference of MF{u2019}s . The proposed model is verified and validated with t he help of an example model with two  different  cases.  In 1 st   case  demand  is  considered  minimum  with  maximum  availability  of  machines, whereas, in 2 nd  case demand is considered maximum with minimum availability of  machines. 0aFlexible manufacturing systems 0aPetri nets 0aFuzzy Petri nets1 aBohez, Erik L.J.,eChairperson0 aManukid Parnichkun,eExamination Committee1 aDailey, Mathew N.,eExamination Committee2 aHigher Education Commission (HEC) of Pakistan,eScholarship donor2 aAsian Institute of Technology Fellowship,eScholarship donor2 aAsian Institute of Technology.tThesis ;vno. ISE-09-31  3Full-Textuhttp://203.159.5.9/ait-thesis/detail.php?q=B03272