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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,
: U$ i- R& I% ~# ]* I, v, a9 a( l  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.: V) b; f" }+ p( D/ w+ R- i
  Loads are processed by each operator for the following time:* r/ b$ j7 Z% M1 l5 J" x
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.; F  o/ y! h2 O& _  w$ B7 Y
  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.
: J, L' g2 P9 m* c. [1 X6 ?  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
- v$ D8 P0 v  lSend 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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) O  @- D+ p; o: q0 T5 s问题:
& A: `9 V) r' `! g8 n- hAfter running the model for 10,000 days, what was the average number of loads in each process?1 L! l! A9 x3 M5 x& A

' O% V5 a5 l# `  ~不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving0 i* r( q' N5 v0 ]0 D) {/ X
move into Q_wait /*Capacity is infinte*/
" E$ p. T( _/ [& X8 ?move into Q_process /*Single capacity*/
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1 Z& h7 C+ e, ]# B! Wuse R_A for n 60,10 min /*Resource A*/4 c  K* C2 O0 ?& Y( y

; @8 G3 m% x2 Xsend to P_B
* r4 P3 Z) ^7 `7 Vend
7 T. f7 q, Y! m/ g
: _; }& o8 p& I+ D  k% dP_B and P_C is similar) G; f3 N& ]; C2 Q- T
triangular 30,60,90 min
2 X" I) G1 W3 }. k/ r8 nu 60,30 min
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in P_C, you need to send to die.
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1 z; `3 E, o$ z6 S+ N7 [1 hThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.) H9 h3 D3 G7 s. ~) g/ z" j* j
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8 u4 c0 Z& m4 n. b% K" x
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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