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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,
3 c$ o2 K. R' B0 Z  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.
- p7 }9 M' r8 q4 q9 t1 }' F  F  Loads are processed by each operator for the following time:
# q5 O$ V7 f- R: [/ M( Q9 z  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
7 J9 _2 S6 T3 f8 F% ]  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.8 b" I" D1 ~4 V+ L' `
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.' V( v4 ?! o$ i* O6 p' K
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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, _. i/ N) @4 z问题:$ t. I( m& @+ e6 |: i* a5 `: Q
After running the model for 10,000 days, what was the average number of loads in each process?
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8 G* s# o- S6 {1 O' I; f8 m7 P不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
* C1 w. ^, S  ?5 u1 v% N3 `move into Q_wait /*Capacity is infinte*/9 `( n3 S" V1 f& c. w! m- u
move into Q_process /*Single capacity*/% X' t0 A2 a( Y' ~0 l( i! d

( @8 {& d. n: Z4 }, _6 f7 ruse R_A for n 60,10 min /*Resource A*/
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2 c6 a6 D, }+ W% L5 w0 b/ w' T1 e9 Ssend to P_B
# c/ R) \8 {# j1 V6 c+ S8 B1 Pend
, k7 Q3 E/ T3 k3 M( \5 w) U3 g  L' a
  E) Y' M) U) J+ v: a! C- uP_B and P_C is similar
/ X# c) p  @/ U/ a1 Ktriangular 30,60,90 min
8 I% E0 Z7 \+ z  x3 l2 ], m/ }" y8 eu 60,30 min
7 Q2 G- z8 R' i" i% ]' ^# X/ s1 D3 y* S' Q2 b0 L3 r
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in P_C, you need to send to die.: G' Y6 O1 X$ @3 x& v$ h% Z+ r/ I

. d9 _1 A5 F: N1 pThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.1 A8 J! l$ Z/ [" X

' B0 E4 I! F8 v) ?- f8 S8 t
7 ~/ k  J- _# U8 ARemember 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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