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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% z* x: L- Z0 }' Y! o9 M! 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.. i9 _. W' k! N0 k' X5 g5 t
  Loads are processed by each operator for the following time:: f2 G7 o7 w0 R5 z  _: Y( M/ y' F
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
- H: |! Y# S2 L. m  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.
* x- |# r) p& E, b  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.1 ?4 m' z. M5 f6 n( H0 u
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.  _1 L: a& R! k/ E( n, x
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问题:
# Z8 i$ C. k; I" {4 OAfter running the model for 10,000 days, what was the average number of loads in each process?
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发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
/ N2 l% m  ]. m/ P% c$ amove into Q_wait /*Capacity is infinte*/- ]# f0 _6 N* q4 X6 S. j3 }' g! @
move into Q_process /*Single capacity*/+ |) g" x) T- s* L5 `$ M/ k

) A; R9 [/ b# J3 tuse R_A for n 60,10 min /*Resource A*/8 Z, |$ |" i* N, K( e2 y; J& K

/ t$ @. K  K. T6 Fsend to P_B4 Z; r* N4 D0 l; m% y
end; t7 j% \# J8 w7 i: Y4 H0 h& P7 l' `$ B+ U

4 n) S# B+ ]$ T* f+ Z% @P_B and P_C is similar' h& ~' L  i. c+ m/ P2 t
triangular 30,60,90 min
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in P_C, you need to send to die./ @) \) ?% c, e  ^
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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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% Z4 b4 w6 P" r; P3 _2 }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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