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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,
! j$ Q& R( u: g3 f, G; C& U* Y  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.3 X) b- D1 U; {) k1 y8 W
  Loads are processed by each operator for the following time:
8 b( E8 G7 a4 c) |9 ^% L  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.4 H, }% ?/ N# n- a
  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.
4 i3 v3 U4 J: y4 |2 k+ t, g* n  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.2 h& K$ W1 |( l! r8 \
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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+ Z3 W  C4 u+ w% L- j' ?问题:  q: O! T5 u8 x) p5 i1 L- e
After running the model for 10,000 days, what was the average number of loads in each process?
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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 arriving
: g( s/ ^# w) a) a& Umove into Q_wait /*Capacity is infinte*/
4 D& k! a5 Z  `move into Q_process /*Single capacity*/
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; D; I' J6 Z$ l/ `6 _: w6 q( k3 Fuse R_A for n 60,10 min /*Resource A*/
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6 m' {# ]" h3 A$ b) V, l. B& Esend to P_B
0 y$ u" y( U, U2 K$ ]end6 M7 [$ v9 C) j% W

( j' ?) H5 F* p- b5 Z9 Z% C3 a# xP_B and P_C is similar
; r4 s+ ?1 s$ P  @* ctriangular 30,60,90 min
# B1 m6 g* `. u3 `$ M% bu 60,30 min
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" n. d/ {( V+ j' gin P_C, you need to send to die.
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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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& w( r5 @9 U% L# Z: x2 Q: jRemember 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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