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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,% Z  E  o& m: q) _
  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.
* x1 ?! w3 L7 D3 c9 x' y# l  Loads are processed by each operator for the following time:
3 n/ _  |) H& N$ f8 n2 R. E# t  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.) D; ?0 z+ E# Q* V
  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.0 Y  i& G) j$ I+ V  y5 a* y% h; r4 y
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.0 y, y! j5 c* P! V2 r! ^9 w
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.& V$ A0 A2 d" O5 |5 j
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问题:" q, P; w7 [. w' J. {
After running the model for 10,000 days, what was the average number of loads in each process?) I  a1 [$ Q2 F
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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 arriving5 L2 v$ ]: B* P2 r
move into Q_wait /*Capacity is infinte*/+ Z5 ?& ?! k9 L6 s6 `' X0 K, s
move into Q_process /*Single capacity*/; G! k/ j! ]! g6 C
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use R_A for n 60,10 min /*Resource A*/% S( g$ ~( L, p, _# s7 ]" s

$ w, ]9 m; _: K/ rsend to P_B
8 z* m% G8 a! ^( M" Y) e! eend6 ^$ h$ ^! [! T( u( G2 A! ?& @

, D& G4 v( i! F; w4 @P_B and P_C is similar
1 U& K  n; o- O, B9 U$ \triangular 30,60,90 min8 W) G" t' @1 c0 e$ \5 D
u 60,30 min
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: e  S5 z' K2 F; @# w; Bin P_C, you need to send to die.0 k* s( g4 [" s

# ^/ X7 G% G- W6 zThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.7 A2 ~: j8 v; ~4 n( L; z

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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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