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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,; L: \' b8 A4 q0 p8 D
  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.
5 [& n/ \: B  C3 W% v! {" S  Loads are processed by each operator for the following time:
  G" K7 J0 @( k" H" K+ z  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.; V- s' X- B  @% d( p
  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.
! ]# y4 r; F% N, G$ c/ L: v  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.1 t3 c  f' l. d( Z! ?* p3 O  x
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.
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* d2 k! ~+ l5 T9 J问题:
! b; E7 u* N( M9 o8 ~, gAfter running the model for 10,000 days, what was the average number of loads in each process?, n" }% [0 P, G( d+ X9 q2 @

6 ]& B$ r. p' c) H不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving3 L6 b+ \& g  w& o. F: D- a6 w
move into Q_wait /*Capacity is infinte*/
5 D8 K0 W, d2 O: {! t2 gmove into Q_process /*Single capacity*/
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; h* }% w+ X5 I" V* yuse R_A for n 60,10 min /*Resource A*// e! l* E) J1 o$ h1 s6 f
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send to P_B
- {1 P. q- d) {6 u3 Tend; A9 @. Y' W8 `) X2 j
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P_B and P_C is similar
# c2 [+ U$ ~' D6 D. {* Ptriangular 30,60,90 min% r# r; \3 [4 D/ O
u 60,30 min
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! y6 V5 B7 K* R% E$ n: Nin P_C, you need to send to die.2 y/ Z" k, V$ f- I

# d0 w9 b8 c6 c9 y0 f) S$ rThen 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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