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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,- n: u: r$ N) l' I
  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.% B4 a+ u. ~+ o# @5 o5 f# Y
  Loads are processed by each operator for the following time:; F0 _8 E1 O. [6 z2 |
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
& q6 J/ z2 `+ Q* B' F* L% M% l3 B+ b  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.
" o2 q# y) Z; F4 A1 Q' u* i1 Z  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.) m' I6 t0 m6 T3 N" }6 X; l
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.# I0 q) h7 X( W: w" F
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问题:+ c, c; |4 E2 }8 }6 m/ F' J
After running the model for 10,000 days, what was the average number of loads in each process?
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# u8 u9 @6 _" h! C# \* s不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving  T7 ~) O. \6 [5 P- A
move into Q_wait /*Capacity is infinte*/
- z5 x8 u5 [. x+ g! N, zmove into Q_process /*Single capacity*/! w* r! x: [6 O0 W8 ~7 l% e
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use R_A for n 60,10 min /*Resource A*/
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0 r$ F* I  i# R+ Rsend to P_B! v6 Y) R. \) q& p2 `
end2 C3 X$ ?$ v9 ~+ O6 \+ r
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P_B and P_C is similar
; j; H+ Q4 n) x; S( T1 [6 [triangular 30,60,90 min" h" E# _) m$ c1 O9 I
u 60,30 min
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. p* T4 q/ D, N7 Min 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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4 F; z0 L" `0 i. JRemember 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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