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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,+ i$ O7 E4 Z1 u
  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.
+ i* B* R9 F( w  Loads are processed by each operator for the following time:
* r* ]1 ?3 D  v7 T4 B8 b  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.! _* ]" P& `4 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.
3 o& V% S) p, h+ c' ?7 d( p  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.. u: r7 i& e# P, S' j
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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问题:& O+ j; Q( k; j* W- Y. `
After running the model for 10,000 days, what was the average number of loads in each process?
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6 r4 z& R+ v' \$ Q不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
, ^: B0 _/ x4 ~5 n: F. r6 J: Dmove into Q_wait /*Capacity is infinte*/
+ b/ A3 y8 v; g4 Rmove into Q_process /*Single capacity*/* v# [) T/ O- ^! q' G( p, x; S
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use R_A for n 60,10 min /*Resource A*/
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send to P_B
7 a* p* o( M4 C' N  R& O$ @& |) Lend
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' j7 b  g/ t" y! f/ l0 ?P_B and P_C is similar
- B) I, j7 b1 Y* L( Vtriangular 30,60,90 min6 \" U6 Y$ ]8 f( s# y# L. ?7 R2 p" ^
u 60,30 min
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in P_C, you need to send to die.+ P' N2 ^7 |  a! ^2 Q

7 J1 }) c: w# \' o! Z* @8 mThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.% ~5 y4 p" h3 l9 m. w! W( @
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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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