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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,. d4 o$ g+ T! J  j+ }
  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.* D4 x' |. e' R, K  \4 b
  Loads are processed by each operator for the following time:4 E+ w6 z4 L6 b0 E# V
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
7 c/ w+ p& L/ B/ |6 }) _8 K  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.
) A8 K( O2 w. F. L* R" v  Worker_C does the job in a uniformly distributed time between 30 and 90 mins., q5 v; Q4 d9 e
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.6 q  K. @0 w1 V4 Y1 i

' {$ ]: t! J1 E! b2 {问题:
8 l8 T& k8 g! k( M% W4 CAfter 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 a0 D' D$ s4 k4 ~2 k# M* @move into Q_wait /*Capacity is infinte*/; d( E; w% K. @1 h' L$ r
move into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/$ w  i6 r1 U) G6 |

1 Z* [- G$ M  r& K- E1 p- ~+ Msend to P_B1 f! f& Y) O; U  ?5 r! [
end* l! j3 D, D5 o# k$ h" b

  \0 w9 k1 X  c/ r" g" H! R4 SP_B and P_C is similar$ f' o' P; b$ Q4 U6 `
triangular 30,60,90 min
. f0 A1 g  N  C; N3 ru 60,30 min
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) P+ O2 m. L& b6 _: Z! ]1 w  Cin 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.
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6 N5 ^. R/ G( p1 f
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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