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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,* A" p% c, s- }5 f
  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.
0 c3 q9 }+ o0 K& I% n' m  Loads are processed by each operator for the following time:; F1 s6 W1 g) L; ]! }/ w# `
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.) H& u, V+ K$ V9 }- L" `
  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.' f; R8 T3 f! S9 s, i6 B( J
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
7 r9 r3 k, P. q6 xSend 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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' J4 g; R. E1 k- o问题:" `0 i# T( d6 H, N: u! K
After running the model for 10,000 days, what was the average number of loads in each process?; L3 {* k( R3 B1 i  ]5 p- v) v

; p# {6 x" u7 Q不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
1 G) P: A2 s9 y* s; {0 Nmove into Q_wait /*Capacity is infinte*/
- N: ~& b) p0 K4 Q. ]move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/9 L" Y; Y0 G; }* V) J% s# C
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send to P_B
" ?9 r$ k* e9 S2 R2 l  |end" M2 e" ^  j3 g; C, j

. U& d5 A! {* CP_B and P_C is similar
9 }; g# H6 q: M) C+ g0 Wtriangular 30,60,90 min8 J0 \, o5 Z& n; g' m& A
u 60,30 min$ }0 H9 [* [4 ?. w1 ?( B. v! k
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  t0 C1 ?9 a" m2 _% w. ?9 Pin P_C, you need to send to die.$ e0 M) R( B- y5 e, j  {2 V; 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.0 `$ j' K, A$ D- k! p

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$ q& B2 ]( U# L9 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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