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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,* D# p, H. L" h8 m
  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." G' J" X) s$ f. o5 s; ^
  Loads are processed by each operator for the following time:
; j! L1 u+ g9 T' O, w9 d. o  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.8 |7 \  y8 ~9 }6 s/ e$ Y3 M8 G
  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." A6 ]& ]" C, e6 C7 `+ f. l
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
* F+ \5 H3 J4 m0 N' M2 ~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:" v3 }8 Y% j. \
After running the model for 10,000 days, what was the average number of loads in each process?0 u' T( B* o, @* @( c6 I$ ?, C

. A9 k( h1 I& c% ?& ?! k不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
2 H- d4 r& H& g5 I* amove into Q_wait /*Capacity is infinte*/* |5 C0 z) Z0 N  l4 _% I
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/
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& s8 s& u& K  U* d5 E, Bsend to P_B
( s/ W( G$ d: u# \: Y' A) @end& [! y; s# B8 B8 e" C3 g# d
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P_B and P_C is similar& t( X4 X. r! G8 j' U
triangular 30,60,90 min
9 P; `( C1 z) s: Hu 60,30 min
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" K' O& A' F: v8 F' d( rin 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.2 o/ Y" W' K: v* Y1 b

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3 E) {) E& d; r8 X4 u6 F" IRemember 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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