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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,7 B/ h0 V. D: J+ e& 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.
3 M( U1 G7 R8 `7 a- _  Loads are processed by each operator for the following time:  T8 X7 ~8 Q3 ]2 a
  Worker_A does the job in a normally distributed time with a mean of 60 mins and a standard dev of 10 mins.
" b5 Z0 K0 K. t5 y9 l; K% L1 ~  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.
0 z0 A' A$ k3 R5 M0 i  Worker_C does the job in a uniformly distributed time between 30 and 90 mins.
, I3 u1 {, l7 m) s- ]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:
# N+ j2 d# C( m3 z4 @After running the model for 10,000 days, what was the average number of loads in each process?& j1 ^* o/ y; `% j- c3 W9 T  E

( l! K' N. Z' e$ w/ k不胜感激!
发表于 2009-10-6 22:36:13 | 显示全部楼层
begin P_A arriving
9 s$ b' v1 X: y8 {7 E, ]% Smove into Q_wait /*Capacity is infinte*/
5 h5 e7 y, l, Y% pmove into Q_process /*Single capacity*/
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6 ~- p. a) U+ f+ v7 m: duse R_A for n 60,10 min /*Resource A*/! @) ]: s: z5 p6 d0 O3 C
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send to P_B1 n9 Q5 S- P" _% M+ n0 {
end
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5 A2 m0 J/ `; J0 p  T" t. VP_B and P_C is similar- I/ {) F; r4 _, q9 j. q$ h& w6 y
triangular 30,60,90 min
5 [2 v7 M* R' G1 ^2 y# Q0 uu 60,30 min
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! l0 o& I( _) V: W5 M; ]8 a" x0 fin P_C, you need to send to die.4 |$ E' X- M9 P# x
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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.0 {" k/ [" n, ~; q9 R1 u2 _

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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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