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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,! l" E  {# q* p; d4 [
  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.6 a7 k2 T3 e% z2 H) B6 U
  Loads are processed by each operator for the following time:3 F/ Z& T& V1 j4 q5 l8 z
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
  T, G) _& F0 S5 @/ z( E  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.. v( f- N, y; L4 G$ O9 s: W/ ^
  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
9 O# Z0 K3 z! y) WSend 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.$ _$ a( y9 Y4 N( }* m" I& w: k

3 I; l3 j- j! Z问题:
4 ], m1 U* J* m% [! hAfter running the model for 10,000 days, what was the average number of loads in each process?6 K* s- K% ~. f* {6 Z# \# N
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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
& a, {9 J1 E' d% {/ Bmove into Q_wait /*Capacity is infinte*/
: R) K4 G6 ]: U  K* N2 }move into Q_process /*Single capacity*/8 R1 q( T; c8 ?- X7 u
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use R_A for n 60,10 min /*Resource A*/0 L1 Z5 M7 H6 g& k( i

9 o2 k! H; U0 d: T: E6 hsend to P_B7 ~& u) ^$ {  q2 X! B9 I# p7 u
end
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P_B and P_C is similar4 ]& u( F3 |4 f& ^5 [' B; X9 t0 O, c! \
triangular 30,60,90 min
/ z$ @6 F! J8 bu 60,30 min
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in 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 I" p0 P7 W; g4 Y" P; |

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- e, e* t8 B% J1 eRemember 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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