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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,% T' c2 c2 ]6 k! l! M1 ~8 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.
$ D8 ~2 s) v/ B; S0 T( X% f  Loads are processed by each operator for the following time:
+ m% S$ n8 d. K: g% Z* g& O- O  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
* `% Y" |' F2 e" k  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.% u( ]* C9 {* {8 z1 h! p1 ~4 N4 w
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
' B( Y4 ]9 S) P* NSend 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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1 `0 K' V' q$ s4 j" m/ _4 G问题:
) m4 c; m: i9 h7 R7 PAfter running the model for 10,000 days, what was the average number of loads in each process?4 r) C' z4 ~7 Q7 b! ~$ `. N8 ?
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不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving0 B" ^1 L0 K: _8 l% M
move into Q_wait /*Capacity is infinte*/  I1 V3 ~) P% w/ t2 k' x
move into Q_process /*Single capacity*/( h# k2 \$ C: o. O( M. i

6 E2 Y1 _2 I& e* M# J* m$ Fuse R_A for n 60,10 min /*Resource A*/( F+ }4 X/ v* m; k3 t8 P# P7 ?
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send to P_B
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P_B and P_C is similar9 A2 _% \; k4 o" J* l  O
triangular 30,60,90 min: I2 I1 C8 c. k- ?: i
u 60,30 min
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( B: ~1 R8 _- u6 E; hin P_C, you need to send to die.; x) v# |8 \2 H- n* d1 t/ r7 S5 j
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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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