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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,: m$ q2 `$ q/ ]
  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.
! x2 Z& w% }2 \: i) X3 E  Loads are processed by each operator for the following time:
% c% n! z6 K7 U2 x# A  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.0 r7 |4 d: U* S+ c! L- b& i
  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.9 W* u& p0 N9 M; W. `
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
' J6 H! {0 Y+ w% H9 i' T: F4 Y: 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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问题:% O8 l7 N- x* b) D% C4 _0 N. Q/ y
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! D, `. f* s" n
move into Q_wait /*Capacity is infinte*/
6 D$ k! a6 Q# Lmove into Q_process /*Single capacity*/
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use R_A for n 60,10 min /*Resource A*/6 x% x, N8 p  D" s' g# t- Q" z
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send to P_B
1 J, y( Z  w3 \' E- O0 m) Rend& q* D# l, n" P! @3 y8 C/ i
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P_B and P_C is similar
  o2 c8 [; n& J) |' q# W: X7 W: L/ ztriangular 30,60,90 min) P  R" N9 O$ A
u 60,30 min
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in P_C, you need to send to die.
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+ @! o! e+ D+ E  k- }9 E8 r6 @Then You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.% V' L# l# t& p% 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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