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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,
, M9 {+ x* w: g2 m# ?  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.
$ L7 G( p( ~8 q8 F" Y2 |5 |  Loads are processed by each operator for the following time:
4 v, R9 A* ?) G+ @2 l  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.8 n/ ~% l+ p% j2 f- N: G
  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.
  p) I9 X6 [; Y7 E) Q* w( m1 Q$ U  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
" ]) f8 A' D9 jSend 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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2 M7 ^) I/ G2 h6 L问题:/ x+ g$ g* Q5 T/ b3 V% }) o' X. K( p! ]
After running the model for 10,000 days, what was the average number of loads in each process?- K+ l% p& v# q. @& e7 T" d) L
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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 arriving9 p/ u: N) O6 {+ p  Q
move into Q_wait /*Capacity is infinte*/
7 [, Q/ ~& e& _. \$ s- Z4 i, z  pmove into Q_process /*Single capacity*/
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: m7 z7 A' _6 u1 Wuse R_A for n 60,10 min /*Resource A*/
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, a1 s+ h8 M0 T' i+ \, ksend to P_B7 m/ [1 k1 q' N% ~. m
end) n. ~9 P2 x- \# e6 u
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P_B and P_C is similar
5 z9 O( @! ^$ ktriangular 30,60,90 min- t% R1 Y  A0 j7 Q) `" M$ R( a
u 60,30 min: ]/ \# S# i. A9 V% {

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$ A# x" J, Y. }# K# E* ~' ?" \, ^5 Qin P_C, you need to send to die.: a: n; h0 Q; e4 D4 E: o0 l, v7 H, c
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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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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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