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[求助] 本人初学auto mod,有一道题目希望大家赐教

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发表于 2009-10-3 15:08:34 | 显示全部楼层 |阅读模式
刚刚开始学auto mod,这道题目搞不明白,希望大家看看 题目是这样的,
5 T( K9 [! G. F: y0 k! N" \  Create a new model containing three independent processes, each with one operator. In each process, loads first move into an infinite capacity waiting queue, then into a single-capacity processing queue.
" h2 G4 o* c& J, L  Loads are processed by each operator for the following time:2 a0 e" \; M& w# h; |
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
: }" ~% H# y" d$ c7 _8 X% ?( y" H  Worker_B does the job according to a triangular distribution with a min of 30 mins, most likely value of 60 mins, and a max of 90 mins.
8 p2 m, R, p. N8 a9 r  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
5 @7 ~4 T: P2 tSend loads to each pocess at the same rate (an exponentially distributed inter-arrival time with a mean of 68 mins) to understand the difference in the processing times of the three workers.
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问题:
& F' `2 `+ E3 S% t. dAfter running the model for 10,000 days, what was the average number of loads in each process?/ @8 r& S4 ~& v- H# a. }* p. @7 O8 [

3 ~3 C+ ~7 B2 |- ]3 q不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
/ I! v/ H( R" d/ x2 vmove into Q_wait /*Capacity is infinte*/' K1 G" p) i8 h
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/$ Z0 t1 D$ j# E2 N; r, O

! ?& ]/ k# S( X' M0 m8 t6 y  |9 Wsend to P_B% d% Y' J$ v/ p9 v+ a) Y& h0 u; z
end
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; d7 Y% V, t# t/ Q, |9 r6 QP_B and P_C is similar
! c+ n3 e+ X3 Mtriangular 30,60,90 min
# q. l1 q3 F' Y! A% Hu 60,30 min
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5 v: l9 I8 {+ m( |5 zin P_C, you need to send to die.) ~' z- `$ F4 W0 w
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Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.
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5 F- x: H6 o8 ]! @' qRemember to turn off the animation before you run your model.

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 楼主| 发表于 2009-10-27 23:53:02 | 显示全部楼层
thanks...
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