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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,
9 D4 C5 r8 l+ O  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.
& M2 R  E1 U6 o+ C/ e8 R! w0 q7 K1 j  Loads are processed by each operator for the following time:$ N2 ~: r. w. ~: @
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
4 y  D  C' {$ O1 e' I  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.
' \- b' ?0 |/ |( I$ p  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.3 D- ]7 B, l3 D' H  L+ g; z
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.
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问题:; ]. \. y. {/ J, l7 G4 z
After running the model for 10,000 days, what was the average number of loads in each process?8 \& C% @; r8 k2 }
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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
. `! s9 w5 m: Emove into Q_wait /*Capacity is infinte*/0 q4 @9 o& T3 [+ O; r* c6 b
move into Q_process /*Single capacity*/' w1 y/ q$ {! W0 L% m+ a

, S* Z5 v# x1 b8 juse R_A for n 60,10 min /*Resource A*/- A  ]* D/ a. s

/ K, @+ {( F0 n& u1 msend to P_B
" _, @( N  T# Uend# g7 o6 o# [/ N" l2 R
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P_B and P_C is similar( ?4 O7 e: i& h: G* u
triangular 30,60,90 min2 j' O+ H; a4 L
u 60,30 min
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in P_C, you need to send to die.
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7 z+ A# f' D' {3 Q" T: AThen 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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