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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,9 x& P, t' q4 r5 r& u- s
  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.; \: H$ b2 k- e7 q4 P/ D8 ?
  Loads are processed by each operator for the following time:
2 o( l) J' K  v+ O  Y5 B6 j, A  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.3 i' v1 r( z5 e
  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.
# G8 H) i0 e1 Z; A  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
6 J  a+ Y4 k$ o2 ~' n1 P; l! zSend 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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9 u# @/ m; J- q- I6 {问题:0 k7 \3 ^3 ~% G/ G1 d+ u3 e
After running the model for 10,000 days, what was the average number of loads in each process?
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# F: c9 N' X. }! o不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving& E0 L" O% u( C2 O+ q1 x# u
move into Q_wait /*Capacity is infinte*/
8 `' h8 R4 [# J8 B" ymove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/' D3 g% Z: O, m' ?

* t  b: {* m1 p# _% }4 R( \2 q4 ysend to P_B
0 a1 T6 X" r  q- ]end) m. n8 b2 U3 w. x! y0 z& y
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P_B and P_C is similar
( |$ ^: y  q- s+ R: w  Ktriangular 30,60,90 min
: X, C+ E: w2 Y) U9 T' ?. Au 60,30 min
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: X3 }+ N: p9 E' Ein P_C, you need to send to die.' [0 R2 c+ n( d8 H$ E/ O( I
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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.3 R0 X) |( G) m

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$ A8 a* K2 A, p* {2 wRemember 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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