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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,
0 R3 q2 z  m; U- O7 G. r) a1 e3 x0 p# e6 C  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.
9 C+ u3 k! m' v! S2 k  Loads are processed by each operator for the following time:
' o5 w( ?% F6 G2 Y- }- J  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins." B. I. X1 _+ s
  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.
* i# _' Z7 d8 a6 @/ Y* M' u  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
9 D" k% }4 ~" c9 f0 m% gSend 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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! B5 N8 p1 F6 R/ ~0 z* A问题:" m3 U& m* {, T0 @8 C; w
After running the model for 10,000 days, what was the average number of loads in each process?
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6 S0 N* L+ P2 B+ x不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
/ f4 K! |1 ]8 M: |, M( umove into Q_wait /*Capacity is infinte*/
9 W9 x* {. K  |" v, x8 \7 s: Smove into Q_process /*Single capacity*/
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) r! R( l4 {4 Z- ]9 Guse R_A for n 60,10 min /*Resource A*/& v8 T& D  W: Y7 _

9 T, {, {8 S0 N0 ^0 g( T# z& g+ ^2 Nsend to P_B6 A# }7 h( ^7 i: h# B0 d
end7 _. ~7 a) r7 [, Q1 |7 @

) G! y" V( ]" F" X2 H5 |P_B and P_C is similar, Q; n6 A5 Q# p) `
triangular 30,60,90 min* p8 ~  U3 W* u, F9 a
u 60,30 min
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+ f( x7 i3 B+ rin P_C, you need to send to die.+ O( D( B# I- N. t# f

, }0 L. \& \0 D/ R# j9 ~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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