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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,, `: `2 T7 @* k
  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.
) {7 t: }# }' ?  Loads are processed by each operator for the following time:7 d8 {$ V9 N5 S
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
6 o+ T3 G$ [1 t8 g+ a  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.8 H) j4 g! `/ F
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
3 Z$ O) t% z* C) F3 ?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.5 G; e& N  `1 ?8 |/ v/ J4 U% K. I3 T! {0 l
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问题:
# F) g" C" X9 F! D! q9 C5 [9 M4 kAfter running the model for 10,000 days, what was the average number of loads in each process?
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5 V. ^) t+ k8 Y/ {# h不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
7 {! A) [. O4 i. t& `7 o; S2 rmove into Q_wait /*Capacity is infinte*/
8 H+ D  T* U2 z/ ~) r: W  f9 imove into Q_process /*Single capacity*/% O8 c( r+ p0 u! j7 j9 A3 k
+ c1 x" N8 f0 o2 `
use R_A for n 60,10 min /*Resource A*/7 j! _( {7 d. x+ X7 L  U( B9 v( p
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send to P_B2 ?9 s  G8 }( D8 `) G. N
end# {' q, i$ w" `& F2 r7 Z+ B" ]
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P_B and P_C is similar* K) _! U- D- ]6 K$ @
triangular 30,60,90 min% @) M! W  ^7 N
u 60,30 min8 w6 E7 K$ B( a  M4 `2 g/ F- ?
& _+ T3 p6 V% h* B1 w/ p" _  x

9 R- I0 [6 b. qin 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.9 O% V7 i9 ~2 m$ |$ m% b* I, Y
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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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