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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,
+ s$ H2 K# }& \8 B/ X2 k  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.
4 i. O1 ~, ]; E7 c9 O  Loads are processed by each operator for the following time:
1 ^6 h1 R6 A. v" y! Q  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.5 U6 O6 `. x" ]. P* T8 p- c
  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.
5 \; Q6 n* Z% x5 A  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
  J8 Y0 m" z1 z# n: \) S& m1 mSend 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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问题:6 L4 a9 V- U# Y" _! A3 w; m& `8 w
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
8 [# z- D/ X% T& o( N" Nmove into Q_wait /*Capacity is infinte*/
, r- i/ m- E; [5 `move into Q_process /*Single capacity*/0 o* [! Z3 N% c; X: j
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use R_A for n 60,10 min /*Resource A*/6 i* e" L/ l' Q3 d: [
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send to P_B
3 B$ v3 `; r9 O. G0 i5 O3 Tend  N2 ^3 k, X+ [! C3 H9 E

6 \( H+ B! {6 {: @P_B and P_C is similar( w1 t- S4 ^* h/ h6 i
triangular 30,60,90 min: }( m7 C4 v. S5 Q) C5 s
u 60,30 min
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4 I& h" L& n+ g% ~6 P2 nin P_C, you need to send to die.9 f. l- K- w+ Y4 S0 U
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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." n1 ], p2 U3 m. S4 G# F; o  C

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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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