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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,
& f- a! Q6 S3 t0 Y( \  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.! z7 ^5 y) r' q$ }- a2 z% T& t
  Loads are processed by each operator for the following time:
8 x  X! }5 A) q" `$ R8 W: ?  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
% ?- s& ~! I( Y& w2 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.
. b0 i* B) C& }" \  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.8 _- H# I7 |* t  f: T. L2 l- G) q
Send 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.1 b6 r& J" p/ l& k2 s
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问题:
# K: i/ \1 M% SAfter running the model for 10,000 days, what was the average number of loads in each process?
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; S) _$ S! f( D' ~* m不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving9 Y/ R- X7 D/ d7 v7 G2 \+ c, K
move into Q_wait /*Capacity is infinte*/# C$ _) O$ I8 B5 [7 Y, V
move into Q_process /*Single capacity*/* R( ^( P2 q7 S) g

7 V, s  U3 h3 v. V% g0 quse R_A for n 60,10 min /*Resource A*/( ^& h+ S- }7 ]! U1 {* F% \

3 u" H! i$ M& G4 x! q4 f' `8 u7 u6 Bsend to P_B
) X0 g. c7 W& H& }: _2 \+ |end5 _$ T1 U" T* {4 @7 X8 a

/ W' i! L- G, ?9 Q/ k6 Y+ S7 uP_B and P_C is similar
7 Y: `2 E+ p+ z3 `$ }! L8 B+ @triangular 30,60,90 min$ m( U  g: n3 T, R- P
u 60,30 min5 A  }" G) }, h( L
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in P_C, you need to send to die.( |9 p& P0 V+ a, p/ r
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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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Remember 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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