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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,+ o% V4 s% a6 R, d8 r  _# i1 W- }7 s
  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., n. O) m# v  K  s! B- y  U5 |
  Loads are processed by each operator for the following time:/ H. [# G% C$ D  K. U
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
1 o- Y7 ~# K& a/ q. d. F  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.
) O. O* Y, C2 @  i* @  Worker_C does the job in a uniformly distributed time between 30 and 90 mins." b1 z. l( B! \6 B$ G
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.1 X9 B$ e* G& t  [" V. j9 F" p
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问题:+ \# q4 w/ M/ {5 g" C1 Z8 }& K
After running the model for 10,000 days, what was the average number of loads in each process?/ E; D1 W3 t3 P0 E* B" ?% M. ]
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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
% f+ O$ N1 \: M) j# wmove into Q_wait /*Capacity is infinte*/
% z* d# H3 q, t% E& S5 c+ Pmove into Q_process /*Single capacity*/6 R" ?: |( @2 ~5 c3 Q

! s# C9 X9 n: C; M8 k3 X5 s2 buse R_A for n 60,10 min /*Resource A*/6 k* K0 q; `5 Z0 j

+ N6 ?- @+ H1 P7 Gsend to P_B0 W6 M( \: L" Q/ |7 B
end
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P_B and P_C is similar
" X  ?* T7 A3 b" D* U/ etriangular 30,60,90 min: n& A$ l. J0 G$ q  L
u 60,30 min* U2 }% p. S5 ]  g
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in P_C, you need to send to die.+ D5 i4 W% R1 R0 n

0 B# y7 K6 _. S* N5 ?" CThen You need to add a L_Control to drive up the whole simulation. and a Run Control of 10000 days.  t5 l) f  w9 [9 S% M) D3 S
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$ f3 E# W( s" H, |6 f% U9 W6 i. 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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