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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," y5 u! R3 Z, u  J, n  A# E8 q; O; R
  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.
) u! [' _" `5 J+ U, P% I  Loads are processed by each operator for the following time:
5 E1 Q2 I1 V7 K; t5 W1 v* a  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
8 z! r6 e/ x7 Y/ E- C4 z  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./ o+ ?: }5 I/ B5 q4 N
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.7 `2 [# b# H' D( L% V
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.8 s/ M# v) ]- O/ L

# p% |1 p& u* U) ~5 Y8 F问题:4 t2 ^" c+ W3 D# \! H
After running the model for 10,000 days, what was the average number of loads in each process?1 Z- u6 }( M$ J

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发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
3 f! }) k" K2 m" ~2 \move into Q_wait /*Capacity is infinte*/
8 Y8 Y- i0 t" z" X0 @7 q5 a8 imove into Q_process /*Single capacity*/
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% N( H( h, o$ o7 V! D, q" ^! Juse R_A for n 60,10 min /*Resource A*/
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# K" \! q2 q  p5 }+ T0 csend to P_B
$ v. B7 d6 n% i% q7 A' z# x2 s( s( @end
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P_B and P_C is similar0 z4 q6 `# L( I
triangular 30,60,90 min% f, a3 Y; W8 O0 c+ d
u 60,30 min- ^, Z" N6 M, F
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7 p; C4 I0 I. j' t  Z* f1 W$ k2 n$ b3 Yin P_C, you need to send to die.; s$ t, w; Z: x4 F( q" Y8 u
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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.8 W/ x5 h: t, W, \- P1 u% e8 E

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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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